How To Fill A Water Heater For The First Time

How to Refill a Hot Water Tank

Hot water tanks in abandoned homes are occasionally drained and kept dry to guarantee that a fresh supply of water is available when the tank is refilled and the house is restarted. For new homes, home tank installers may also choose to leave the tank completely dry until the home is fully occupied. While an HVAC repair visit is the usual, you may save time and money by refilling your hot water tank instead of calling a specialist to come to your home. You will not need any specific skills, but you will need to become familiar with the pieces of a tank and how they operate in order to complete a successful and problem-free tank filling.


  • Inspect to see if the electricity to the tank has been shut off at the circuit breaker panel. Your home’s main electrical panel is where you’ll find the breaker switch, which is sometimes clearly labeled. It is necessary to turn off the main power breaker if the hot water heater’s circuit breaker is not clearly identified. Make ensuring that the “pilot” setting on the gas selector switch is selected when using a gas-fired water heater.


  • Understand the components of the hot water heater, such as the water fill pipe, which extends from the top of the tank and is the only one of two pipes equipped with a turn valve
  • The relief valve, which is located on the top or upper side of the heater and is identified by a brass fixture with a metal lever
  • And the drain valve, which is located at the bottom of the tank and resembles a garden spigot.


  • Inspect and make certain that the drain and relief valves are both closed
  • The drain valve may be closed by twisting the valve handle fully clockwise, and the relief valve can be closed by pressing the lever to the side.


  • In order to assist air escape from the tank and pipes while water fills, turn on one or more hot water faucets in the home at the same time. When water begins to stream from a faucet, the tank has achieved capacity.


Turn on the circuit breaker or choose “light” on the gas selector if you have one. Then press the red ignition button a couple of times until the gas burner comes to life, and you’ll have hot water in a matter of minutes.


Draining and refilling your tank once a year can help to extend the life of your tank and prevent rust and silt from accumulating. Keep an eye out for leaks at the drain and relief valves while the tank is filling. If there is any leaking, tighten the valves even further. The gas water heater may not ignite if the gas valve is not turned on, so check that it is. A gas sector valve can be located on the pipe that leads to and from the area around the gas sector control knob. As soon as the valve is closed, the lever of the valve will form a 90-degree angle with the pipe.


  1. Electricity should not be applied to an empty hot water heater because the heating element will malfunction. As soon as the tank is completely full and the water has reached the proper temperature, the second pipe coming from top of the tank will become extremely hot. This is the hot water return line that is used to re-circulate water throughout the system. The act of touching this pipe will result in serious burns.

How to Turn on a Water Heater (12 Precautions to Follow)

There are a plethora of different types of water heaters available on the market nowadays, which may be bewildering. In your new building, you may discover a tank water heater, a tankless water heater, or a hybrid water heater, among other options. Tank water heaters were formerly the industry standard and quite popular, but tankless water heaters are becoming increasingly popular for a variety of reasons, the most important of which is their mobility. When a homeowner desires hot water delivered fast to taps or appliances that are not near to the central heater, point-of-use water heaters are the most common choice.

The following is not a lesson on which type of water heater is the most efficient, as the title indicates.

No, we don’t want you to be scrambling around trying to find a professional for everything, even this.

So How Exactly Do You Turn on Your Water Heater?

The particular procedures you must do to switch on your water heater may vary depending on the type of water heater you have.

The next section will explain what you should look for when choosing a water heater and how to properly maintain one. It is vital to note that each of these procedures is critical and should not be omitted or dismissed as inconsequential. Ready? Let’s get started!

How to Turn On a Gas Water Heater

To switch on your gas water heater, simply follow these steps:

Step 1: Check For Any Open Valves or Faucets and Close Them

Starting with a visual inspection, look for any valves or faucets that may have been accidently or intentionally opened while you were working on your tank. It’s possible that someone opened it to allow a small amount of fresh air into your hot water tank. When you’re getting ready to turn on the water heater, the first thing you should do is close all of the open faucets.

Step 2: Turn the Cold Water on

The next step is to switch on the cold water supply. The reason you’re doing this is so that your tank may be refilled. It is essential since the last thing you want to do is switch on your heater when your tank is still half-empty.

Step 3: Light Your Pilot Light

The pilot light on your water heater must be re-lit in order for your hot shower to function properly again. It is also critical to do so in order to avoid any mishaps caused by the discharge of gas.

Step 4: Turn on Your Gas Valve

If your valve is set to “pilot,” you will not be required to complete the pilot light stage as described above. All that is left for you to do is switch on your gas supply valve. At this time, the water heater should already be heating the water, and the burner should be turned on and ready to go. If you verify this on your heater and it isn’t the case, you may need to go back to the pilot light stage and repeat the process from the beginning again. This post will conclude with a link to a detailed step-by-step instruction manual.

How to Turn On an Electric Water Heater

In order to switch on your electric water heater, follow these steps:

Step 1: Check for Any Open Valves, or Faucets Close Them Up

In the same way that you check your gas water heater to see if there are any open valves or faucets, you must also check your electric water heater to see if there are any open valves or faucets. Anyone whose door is left open should be closed as soon as possible.

Step 2: Turn the Cold Water On

Make certain that your tank is completely full with water before turning on the electricity. You do not want the heater to be heating a tank that is almost completely depleted. This might cause serious damage to your tank or perhaps the heater.

Step 3: Take Out the Safety Tag

In the case that you placed a safety tag over your breaker in order to prevent anyone from turning on the switch, it is now time to remove it. If the house is not yours, it is possible that the owner has placed a tag on the switch, so be careful to double-check. If you own the house, you need get familiar with this procedure in order to avoid electric shocks.

Step 4: Turn on the Breaker

Your water heater breaker is in good working order and is ready to be turned on right now. At this point, the water heater should start heating the water to the desired temperature. Some electric water heater types may not provide any visible indication that the machine is operational. Low sounds, on the other hand, should be heard to signal that the heater has begun to operate.

How to Turn On a Tankless Water Heater

Tankless water heaters are the most convenient to operate. In order to switch on your tankless water heater, follow these steps:

Step 1: Turn on Breaker

Due to the fact that these types of water heaters are tankless (as the name indicates), you will not be required to fill it with water as you would with other types of water heaters as long as it is linked to the water supply.

All that is required is that you just turn the breaker.

Step 2: Confirm Temperature

Because the heater operates on demand, you’d have to choose a temperature that’s comfortable for you. It will heat up in accordance with the temperature you select and will only begin heating up when you require it to do so. In order to avoid an accident when turning on your water heater, you must proceed with caution. Take note of the following safety measures before proceeding.

Precautions to Follow When Turning on Your Water heater

  1. Check for drips in the discharge pipe of your washing machine. It is possible that the pressure is too high
  2. If you see any drops, lower the pressure immediately (below 80 psi is low enough). Watch for the scent of leaking gas when you switch on a gas heater that hasn’t been used in a long time. Natural gas smells unpleasant for a good reason, and if you don’t know what it smells like, some people equate it to the stench of rotten eggs. This should be done before you turn on the pilot light. If there is a strong smell of gasoline, propane, kerosene, or any other flammable substance, do not re-light the fire. If you have a more recent heater, it is possible that it will prevent illumination from occurring. If you have to switch on your water heater because the pilot light has gone out, look for the source of the problem. Please do not attempt to switch the heater back on if the problem has not been resolved
  3. Test your water heater to see whether it is safe to re-light it and to see if the relief valve is operational. If you are using an electric heater, make sure there are no naked wires or debris. It is not recommended to re-light the heater until you have resolved the issue completely. You should try something different if you discover that your water heater has been tripping off no matter how many times you replace a fuse or reset the breaker. It’s possible that getting your water heater serviced is the best course of action. Keep a safe distance between yourself and the pilot light or gas valve when you’re igniting the pilot light or turning on the gas valve after that. Please keep your bare body and, in particular, your face, out of the picture! When delayed lighting happens as a consequence of a filthy burner or maybe an out-of-position pilot, you run the risk of being seriously burnt if you aren’t careful. Ensure that your burner is free of dust, corrosion, or dirt before proceeding with the pilot light. You should not use your gas stove if the burner is coated with dust, rust, or grime. Before you can ignite the burner, you’ll need to clean it or get it serviced properly. In order to ensure that the outer and inner covers of the gas valve are properly secured, check them first before turning on the gas valve. If you attempt to ignite the pilot light and the burner does not ignite, do not attempt to ignite the pilot light again. First and foremost, turn off the gas. If you don’t know how to do it, research up processes online until you find what you’re searching for. You can also enlist the assistance of a professional. Don’t forget to keep in mind that the manufacturer has provided you with a handbook. If you have any questions concerning a particular part, don’t hesitate to examine the manufacturer’s handbook. As a brief aside, never throw away the instruction manuals for any device or gadget you purchase in case of an emergency like this. If you have misplaced your manufacturer’s handbook, don’t despair
  4. There may still be a way out of your jam. Take note of the manufacturer’s name as well as the model number of your heater and check them up on the internet. They have a website, and you should be able to discover some useful information there
  5. Many water heaters have instructions attached to them by the manufacturer
  6. These instructions may also be useful in troubleshooting the water heater.


It shouldn’t be too stressful to turn on a new water heater, whether it’s for a new house or a new water heater. With the knowledge in this article, you should be able to turn on practically any water heater without encountering any difficulties. Was this information of use to you? Please share your thoughts in the comments section below.

Electric Hot Water Heater Startup

There are a few procedures you need to take in order to get your electric hot water heater up and running. Prematurely activating the breaker or turning on the water might cause complications and perhaps damage the heating components. Not sure if you’ve arrived at the correct location? Please refer to the articles’Troubleshooting Electric Water Heaters ” and ” Troubleshooting Gas Water Heaters ” for detailed information on all water heater related issues. It is necessary to partially or fully drain the water from an electric water heater for a number of repairs on this type of appliance.

In the event that you did not deplete the tank but instead turned off the water, you should still follow the method for turning on the water to ensure that the tank is fully stocked before the electricity is switched on.

Close the Drain Valve

Drain the tank by closing the drain valve located at the bottom of the tank. Remove the hose that you used to drain the tank and clear up any extra water that has accumulated on the floor. Check to see that the drain valve is securely closed. Disinfect the surrounding region and the valve itself with rubbing alcohol. When the water is turned on, you’ll want to keep an eye on it to make sure it isn’t leaking.

Turn On the Cold Water Supply

Drain the tank and close all of the valves and taps in the home that you may have opened while doing the draining. Turn the cold water supply pipe at the top of the tank to the cold water supply position. At this point, you should be able to hear the tank filling up with water. On the hot water side of the tank, there should not be a valve installed. If there is one, be certain that it is operational. Wait for the water heater to completely fill with water before using it again. Check the water level by turning on a couple of taps and letting the air out to ensure the tank is full.

Turn On the Power

The electricity should have been turned off safely, and you should have tagged or “locked out” the circuit breaker that served as the water heater’s circuit breaker. You should follow this procedure whenever you work on anything that involves electricity in your house. For further information, see the articles “How to Shut Down an Electric Water Heater” and “Electrical Safety at Home.” After the hot water tank has been filled with water, turn on the circuit breaker for the hot water tank. After the water has been entirely emptied, it will take some time for it to warm back up.

When the elements start heating, you should be able to hear a buzzing noise. When this occurs, you will be notified that the water heater is operational. The water should be at least warm, if not hot, after one hour.


The actions outlined in this article should be followed for re-starting an electric water heater after it has been shut off have been provided. Turning the power back on too quickly might cause harm to the elements. To avoid difficulties, make sure to follow all of the instructions.

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Curious to Know How Long Does It Take to Fill a 40-gallon Water Heater?

Home»Blog» Are you interested in learning how long it takes to fill a 40-gallon water heater? 3643Views Some people want their bath water to be warm, while others prefer it frigid. For example, there are occasions when I wake up and have to decide whether I want anything hot or cold. There are a variety of factors that influence these decisions, including the weather and one’s state of mind. The process of creating cold bath water is simple, but the process of creating hot bath water is time-consuming.

For example, “how long does it take to fill a hot water heater?” and “what sort of heater should I get?” are some of the questions we need to address first and foremost.

What You’ll Get in This Tutorial

If hot water heaters are capable of performing only one fundamental job, namely, heating bath water, then you can be confident that you are purchasing a quality equipment. However, purchasing a product that I can rely on on a continuous basis is something that is worthy of my time. As I sat down to make a list of the features I would like my hotwater heater to have, I noticed something that may seem inconsequential to some, but is extremely important to me in terms of performance and quality: there’s something that some may consider to be a minor detail, but for me, it’s critical.

  1. In this guide on electric tankless water heater reviews, we will reveal some tips and tactics for selecting a water heater that will maintain the largest tank of warm water filled quickly and conveniently.
  2. Every member of my family is as well.
  3. As well as providing me with a nice bath every time I need one, knowing how long it takes to fill a hot water heater will also guarantee that my power cost does not spike excessively during peak demand periods.
  4. In this lesson, I will cover all you need to know about the performance, how-to, and safety of a hot water heater filling system:
  • To fill a hot water heater, it takes approximately how long? Selecting the most appropriate hot water heater
  • Instructions on how to begin loading and using the hot water heater

Let’s get things rolling as soon as possible. If the water pressure in your 40-gallon water heater is strong, it won’t take long to fill it back up. In most cases, it would just take 10-15 minutes to get the water ready for heating purposes.

It is not always necessary to fill it immediately, but it is more effective to do so in order to begin the water heating process as soon as possible. Depending on the sort of water heater you have at home, the water heating procedure might take anywhere from 2 to 3 hours.

There are two primary types of water heaters that are commonly accessible on the market today: electric and gas. However, before making a purchase, it is important to understand how long it takes to fill a 40-gallon hot water heater. One makes use of natural gas, while the other makes use of electricity. It is advisable to get an electric powered heater for a large household in order to take advantage of the storage capacity it provides. Natural gas water heaters, in our opinion, are the greatest choice for those who consume water often.

Filling the Water Heater

Let’s get into the meat of the matter now. We strongly advise that you advance to the next section if you have a thorough understanding of how long it takes to fill a hot water heater. Filling a water tank may appear to be a simple task for everyone, right? Water heater tanks, on the other hand, are unique snowflakes that demand extra work and understanding to offer. Additionally, following these actions is essential to safeguard your safety.

Step 1: Turn off any electrical power connected to the heater.

It’s basic sense, just like knowing how long it takes to fill a hot water heater should be second nature to most people. However, it appears that a large number of people overlook this first and most important stage. Water is a conductor of electricity, and it would be extremely dangerous for anyone to come into contact with boiling water that has been infused with electricity. It is also recommended that this step not be skipped in order to preserve energy and, as a result, reduce the cost of power consumption.

Step 2: Drain the remaining water.

In order to prepare for draining, turn off the cold-water valve. Be sure to review the process and determine how long it takes to fill a hot water heater before moving on. Connect the hose to a drainage valve so that the water may be drained to the outside or into a drainage system. It is critical to drain any residual water in order to avoid any difficulties with the water supply or the water heater itself. The procedure of flushing the residual water out of the item every time it is used is also beneficial and will increase the longevity of the equipment.

Step 3: Fill the heater with water from the cold-water valve.

Once you have completed the preceding procedures, turn on the hot water faucet to mark the halfway point of the project. Asking ourselves how long does it take to fill a hot water heater has proven to be really beneficial at this stage. After that, you may begin the process of filling the water tank. This one normally necessitates a period of waiting, depending on the amount of available water pressure in the household. Water must be safe to drink in order to protect the safety of the entire family.

Remember to perform certain checks and tests first before going to fill in the rest of the information. Unclean, contaminated water is a waste of time, energy, and resources. If the water starts to flow at a steady and constant rate, turn off the faucet immediately.

Step 4: Restore the power.

Now that the water heater is fully stocked with water, it’s time to turn on the electricity again. Check to see whether our estimate of how long it will take to fill a 40-gallon water heater is right as soon as possible. In order to begin the restoration procedure, connect all of the necessary cables and connectors. As previously said, it will take around 2-3 hours to heat the entire gadget, therefore it is preferable for you to have something to do while you wait. You can, on the other hand, complete the entire process before retiring for the night and sleeping soundly.

I do this a lot since it allows me to take a bath afterward.

I don’t want to be inconvenienced by having to wait many hours for my water heater to be repaired slowly.

Step 5: Check the drainage valve.

I, like many other people, forget a lot of things, including our favorite question, “how long does it take to fill a hot water heater.” That’s why, just like what I’m doing, I’m advising you guys out there to double-check your drainage valve after the electricity has been restored to your home or business. You may also do this step prior to attaching the electronic equipment to check that everything operates as intended and without interruption. It is also necessary to get your drainage valve tightened in order to avoid leaks and other difficulties.

Why not go ahead and double-check everything while you’re at it?


Trying to figure out how long it takes to fill a 40-gallon water heater may not appear to be the most difficult chore, but it is if you don’t have any prior experience. You should be able to securely fill a water heater after watching this guide, we’re confident in our ability to help you. It is critical to remember the safety precautions we have mentioned because many individuals have a tendency to forget them. We strongly advise creating a checklist for each and every time you complete this job.

  1. As a result, there’s nothing to be embarrassed of.
  2. That is why research and hands-on experience are critical in order to completely understand what your water heater type or model is capable of.
  3. We are confident that purchasing a water heater is a wise investment.
  4. Several individuals have also shared their experiences with it, so make sure to look them up on the internet as well.
  5. I believe that concludes the discussion.

We hope you found this lesson to be useful, and if you did, please remember to forward it along to anybody else who might be interested in water heaters. This article should have provided you with valuable information, including how long it takes to fill a hot water heater.

How To Drain A Water Heater (.And Fill It Too)

It is possible that this content contains affiliate links. If you make a purchase after clicking on one of these links, we may receive a small compensation at no additional cost to you. It’s a good idea to empty your water heater once or twice a year because sediment — which is made up of sand and other minerals — can build up in your water heater and cause it to malfunction. You will have less hot water available as a result of this, and your water heater will be less efficient as a result. Learn how to empty and refill your water heater by following these steps: 1: Gas water heaters and electric water heaters are treated in a somewhat different manner.

  • Using a gas water heater, you must put the gas valve to “pilot” in order to prevent the burners from turning on while you are emptying and cleaning out the water heater. If you have an electric water heater, you must shut down the circuit breakers that are connected to it. If you don’t, and the burners are turned on while the water is being drained, they can rapidly become inoperable.

Connect the drain valve at the bottom of your hot water tank with a garden hose, which you will locate towards the bottom of the tank. It is important to keep children and pets away from the drain hose since the water that is being drained is quite hot and you do not want them to get burned if they come into contact with it. 3.Identify the shut-off valve for the water heater’s cold-inlet line and close it. Turn it off if it’s on. 4.Look for the pressure/temperature relief valve, which should be located towards the top of the hot water heater tank.

  1. 5.Look at the bottom of your water heater tank for the drain valve.
  2. To clear sediment from the drain valve, first shut off the pressure/temperature relief valve and then turn on the cold water input valve, which will most likely flush the debris from the valve.
  3. A long, thin screwdriver is ideal for this task.
  4. Steps 1 through 5 should be repeated several times, and the tank should be drained until the water flowing out of the other end is clean.
  5. Remove the garden hose from the faucet.
  6. Check to see if the cold inlet valve is still open by turning it on and off again.
  7. Continue to run the water until there are no more air bubbles coming out.
  8. In the case of a gas water heater, you may need to re-light the pilot light if necessary.
  9. But if you follow the methods outlined above, you will be well on your way to having a water heater that is more energy efficient and will save you money on your utility costs.

Pregnancy, weddings, saving money, living green, and life with pets are some of my favorite themes to write about. I also enjoy writing about travel and food. My hobbies include spending time with my hubby, reading, and creating 3D artwork as well as Native American beading when I’m not writing.

How to Fill an RV Hot Water Heater (Quick Guide)

Ensure that your RV’s water heater has been fully charged before attempting to take a warm shower or utilize the hot water system in your vehicle (and is on). Fortunately, filling your water heater is a straightforward, largely hands-off procedure. As a result, let’s learn how to fill an RV water heater in two distinct methods, as well as some vital information to ensure that you don’t harm your heater in the process!

How to Fill an RV Hot Water Heater

Filling an RV hot water heater may be accomplished in two ways: either by pumping water into it from the fresh water tank or by using the pressure provided by municipal water attached to your water hook up. Both methods necessitate the fact that your hot water tank is not in bypass mode (a setting you would typically use when draining the water heater andwinterizing the camper). Related: How to Drain the Water Heater from an RV In other words, your RV’s water heater is a component of its plumbing system, just like a home.

  • In the event that you fill your RV’s water tank with freshwater, the water will be pushed into the hot water heater when the pump is turned on.
  • That is all there is to it.
  • And it’s the same for all varieties, whether they’re fueled by propane gas, electricity, or a combination of the two.
  • If the water heater is turned on when the hot water tanks are empty, it will cause the heating element to burn out.

How Do I Know if My RV Water Heater Is Full?

Ensure that your fresh water pump is operational or that you are connected to city water before turning on a hot water faucet in a sink or shower and allowing it to run continuously until water is continuously dispensed from the faucet. If the water spits and sputters, turn on the faucet until the water comes gently out. Not to mention, if your hot water heater is fitted with a bypass kit, be certain that the valves are not blocked, since this will effectively force the water in the plumbing system to flow around the water heater (See diagram below for more information about bypass systems).


The most typical reason for an RV hot water tank not filling properly is that one or more bypass valves are either partially or totally closed, depending on the situation.

Determine which bypass valves are required for your system based on the type of system you have installed. Among the numerous factors that might apply are:

  • It appears that there is a clog at the cold input port of the water heater tank. The line connecting the bypass kit to the cold water entrance on the tank should be inspected. In addition, make certain that deposits in the tank and/or crud on the anode rod have not resulted in a blockage at the tank’s cold water entrance. The bypass valves are not functioning properly
  • The drain valve is leaking
  • And

More troubleshooting information can be found in your owner’s handbook.

Does an RV Hot Water Tank Fill Automatically?

If you connect your RV hot water heater to city water or start on your water pump, the tank will automatically fill as long as the heater is not bypassed. Turn on a hot water faucet in a sink or shower to assist the water in moving through the system.

Where Is the Bypass Valve for the RV Water Heater?

In most cases, the hot water heater bypass valve is positioned close to the rear of the water heater itself, often where cold water enters and hot water exits the tank of the heater. Depending on the type of bypass system you have, you will have anywhere from one to three bypass valves in your system. Is it a good idea to leave my RV’s water heater running all of the time? (Important) Camper FAQs is made possible by donations from readers. It is possible that purchasing through links on our site will result in us receiving an affiliate commission.

How does hot water tank fill up?

Nancy G. had first posted this quote: The thread I was looking for was no longer available, and I had a bookmark for water system information, which is no longer accessible. Explain to me once again how the hot water tank fills up so that you can be sure you’re not going to burn the element this time. We have the water connected to the house and are verifying everything. How does one go about filling the hot water tank for a shower while the water is running smoothly from the hot water faucet?

  1. Hello, Nancy.
  2. Simply ensure that the bypass valve is closed and that the water is sent to the tank.
  3. This is accomplished by turning on the hot water faucet at the kitchen sink.
  4. I hope this has been of assistance.
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Tankless Water Heater: Is It Right For You?

A tankless water heater (also known as an on-demand water heater) is a high-capacity water heater that heats water instantaneously just when you need it. It may be installed in any location. These units are appropriate for circumstances where space is restricted and the requirement for hot water is either irregular (for example, a vacation or weekend property such as a lake cottage) or you want a large amount of hot water in a short period of time (for example, a hotel) (such as when filling a whirlpool or soaking tub).

Water heaters with no tank are particularly well suited for use in households where several people need to wash or shower within an hour or two of one other, as well as in commercial settings such as restaurants, hotels, and laundromats.

Benefits Of A Tankless Water Heater

Tankless water heaters provide a number of significant advantages, including the following:

  • Operation with a high level of efficiency. Energy factors of up to 0.96 are achieved with tankless water heaters, implying that for every dollar spent on fuel, you receive 96 cents worth of hot water from the faucet. Using a standard gas water heater with an energy factory of 0.62 ($1.00 in fuel = $0.62 in hot water), it is clear that savings may be significant. When there are days (or even weeks) in a row when no hot water is consumed, the savings are much more significant than usual. Because a typical water heater maintains a constant temperature in the tank, all of the energy is wasted in the process. When compared to a tank-style unit, a tankless unit only warms water when it is needed, resulting in considerable energy savings in situations where owners travel during the week or in vacation/weekend homes. Availability has been extended. Typically, a 50-gallon gas or electric water heater can produce 72-88 gallons of hot water in the first hour of operation – that is, when the tank is fully stocked with hot water. Every one of us has experienced the inconvenience of taking a lukewarm (or even cold) shower when we’ve been unlucky enough to wake up late in a house with four or more people. Because a tankless water heater warms water (almost) instantly as it goes through the device, it has the capacity to supply up to 396 gallons of water per hour. Design that saves on floor space. Tankless water heaters are particularly well suited to circumstances when space is at a premium. When compared to a traditional water heater, which occupies around 8-10 square feet of floor area, a tankless water heater is roughly the size of a medium-sized suitcase and is often mounted on the wall.

Things to Consider

  • Tankless water heaters require more maintenance than traditional water heaters. Traditional water heater manufacturers advocate annual maintenance to ensure the longest possible life span, but you’ll normally get 6-10 years of service out of one even if you don’t follow their recommendations. Tankless units, on the other hand, do not have this limitation. Water heaters with tankless storage are particularly vulnerable to hardness and scale buildup due to the little internal canal space they have. A tankless water heater will require flushing at least once each year in order to maintain its efficiency. In addition, failing to undertake routine maintenance may result in the manufacturer’s warranty being voided. Repairs become more expensive as a result of increased complexity. While a well maintained tankless water heater will run for years without needing to be replaced, it is still a machine that has to be maintained. It is more likely than a traditional water heater to develop a problem, and repairs will be more expensive as a result. In order to protect against future repair expenses, we strongly recommend that you purchase an extended warranty. Increased Up-Front Expense. Tankless water heaters are often more expensive to install than their conventional counterparts — especially when converting for the first time — than their traditional counterparts. As a result of its on-demand nature, tankless units consume a significant quantity of gas when in operation – up to 200,000 BTUs on larger residential versions (compared to 40,000 BTUs on a typical 40 gallon tank-style model). It is possible that you may need to expand the size of your gas lines in order to fit a tankless water heater in your house. Additionally, the expense of changing water and vent pipes must be considered.

Tankless water heaters certainly live up to their claims of great efficiency and high availability of hot water, but they are not always the best option for every case. Consider the advantages and disadvantages of each option to determine which is best for your case, or call Church PlumbingHeating at (574)295-6844 for a free consultation.

About The Author

Church PlumbingHeating, Inc., based in Elkhart, Indiana, is owned and operated by Michael J. Church, who also serves as its general manager. Since 1996, he has worked in the plumbing, heating, and air conditioning business in various capacities.

Water Heater Recovery Heat Up Times Comparison Chart

Recovery of Waste Water from Water Heaters Heat Up Times Compared to One Another Time Required for Water Heater to Come to Temperature There isn’t much that can ruin your day quite as quickly as taking an ice cold shower, and if you have the wrong hot water heater, this might become your new normal very soon. In the event that your current heating unit fails on you, don’t let your stress over the situation lead you to make the wrong choice for a replacement. Prior to selecting a hot water heater, take into consideration how long it will take for the water heater of your choice to heat up completely.

The question is, how long does it take a hot water heater to reheat water once it has been depleted?

Water Heater Type Time to Heat Back Up
Gas – Conventional Tank 30-45 mins
Gas Tankless 0 mins
Electric – Conventional Tank 60-80 mins
Electric Tankless 0 mins

Water Heaters Powered by Natural Gas Specifications for a Gas Conventional Water Heater Once the water is in the tank, the normal gas tank water heater will take 30 to 40 minutes to heat it up to the desired temperature. When new water from your water supply is fed into the tank, this early heat up occurs as a result of the incoming water. Some mathematical calculations are required to provide a more specific explanation of why this takes 30 minutes. The size of the heater’s tank is obviously important, since more water will take longer to heat than a smaller tank.

  1. In simple terms, a BTU is the amount of heat required to elevate one pound of water by one degree Fahrenheit in temperature.
  2. For example, the typical hot water heating unit tank holds 40 gallons of water.
  3. Thirty-five gallons times 8.3 pounds per gallon is 330 pounds of water.
  4. For the sake of not having to get into full-blown thermodynamics calculations, we may simplify and say that a 40,000 BTU system with a 40-gallon tank needs half a minute to heat each gallon, which results in a half-hour heat up time.
  5. For those with larger tanks or lower BTU ratings, on the other hand, it will take longer to heat their tanks.
  6. Likewise, keep in mind that this is the amount of time it takes for new cold water to be heated in your tank, so plan accordingly.

When all of the warm water in the tank has been consumed, the length of time it takes to warm up additional water is taken into consideration. It will be necessary to restart the gas tank water heater at that point in order to heat new water from the entering groundwater temperature level.

A gas tank hot water heater will take roughly 40 minutes to warm up new inbound water for the very first time.

Specifications for an Electric Conventional Water Heater When compared to gas tank hot water heaters, electric tank hot water heaters often require double the amount of time to heat water. Electric components, while often more cost-effective, are just incapable of matching the high performance of gas-fired systems. It would take approximately one hour for an electric hot water heater to heat the 40-gallon tank shown above from the moment brand-new water is introduced into the system. As a result, homes with higher water needs are more likely to choose for a whole-house gas tank water heater rather than an electric model.

  • A tank hot water heater that uses electricity takes 60-80 minutes to heat water, but a tank hot water heater that uses gas takes 30 minutes.
  • Unless the system is malfunctioning, this should not take more than a few seconds for a typical-sized house to complete the cycle.
  • Due to the fact that a tankless gas heater heats water instantaneously, it should only take a few seconds for the warm water to travel through the pipes and into the component.
  • For the most part, water does not become heated until the dishwashing machine or hot water faucet is turned on.
  • Due to the fact that a tankless electrical heater warms water fast, it should only take a few seconds for the warm water to make its way through your pipes and into your fixture.
  • Temperature of the incoming water-For both tankless and tank-style hot water heaters, the temperature of the incoming water will determine how long it takes for the water to heat up to the desired temperature. Due to the fact that tank heating systems conserve water while still maintaining a constant temperature, the incoming temperature should not have a significant impact. Tankless heating systems, on the other hand, supply incoming water as needed only a few seconds before it is released from the faucet. This suggests that if the groundwater temperature level is really low, the water may not heat up as quickly as it otherwise would. When the ambient temperature in the room or area where the heaters are housed is excessively cold, both types of heaters might be adversely affected. Water heater settings-Although water heaters appear to be relatively simple when compared to other household mechanicals, they often require more effort to operate properly. Whether your heating unit isn’t operating properly, a professional may be required to inspect it and determine if any settings or calibrations have been altered that are negatively impacting its performance. Issues with age and maintenance are similar. If your heating system is like any other mechanical equipment, the age and quality of your system might have an influence on its efficiency, including the amount of time it takes to warm up. In addition, a lack of simple maintenance, such as interrupting work to wipe out silt that may have accumulated in the pipes, might result in decreased efficiency. Those who live in areas with hard water are more likely to encounter pipeline sediment. While it’s easy for the end user to forget, hot water travels from the ground to your home’s plumbing system, where it passes through the heating unit and pipes before reaching the faucet. When your bathroom is located a considerable distance away from the heating system, it is possible that the warm water may take longer to reach there. This should be represented by a knowledgeable technician while setting your system, so it should not be a source of undue anxiety. Along with the length of piping, the width of your pipes may also have an impact on how long it takes your water heater to heat up properly. In that it can carry more water, a larger pipe is advantageous, but it will take more water to be heated before the pressure rises up sufficiently to allow it to push through the remainder of the pipeline system.

In conclusion, there is a heater that is suitable for any situation. Consider your requirements before selecting a storage tank, whether traditional or tankless in design. Please remember that South End Plumbing provides all plumbing services and that we are only a mouse click away.

We also specialize in tankless water heaters; please contact us for more information. South End Plumbing is one of the few organizations that will provide you with a no-obligation quote. To book a visit, please call us at 704-919-1722 or complete the online form.

How to Maintain & Drain A Water Heater: 8 Step Guide

Date of publication: December 2019 You may take your water heater for granted until it stops working and you are forced to take a frigid shower in the middle of winter. Even worse, it might cease operating altogether, resulting in water splattered all over the floor. Fortunately, a hot water heater does not require much maintenance, although emptying it on a regular basis may assist to ensure that it continues to operate smoothly. Consider the following recommendations for maintaining your water heater.

According to The Family Handyman, silt builds up in the bottom of a water heater over time, which can cause obstructions in the system.

If you do not properly maintain your water heater, it may not operate at peak efficiency or may even fail to operate at all in some cases.


A high level of protection for your house makes all the difference when it comes to keeping your family safe. Allstate home insurance can assist you in protecting what is important to you. Request a quote Locate a representative. When it comes to draining a water heater, the DIY Network recommends the following measures. The owner’s handbook for your water heater will provide you with particular information on your water heater. For those who are uncomfortable completing this sort of maintenance on their water heater, contact a plumber to arrange for a professional draining to be performed.

  • A water line and a shutdown valve leading into the water heater may be found at the very top of the water heater’s tank.
  • Step 2: Disconnect the water heater’s power supply line.
  • Alternatively, if you have an electric water heater, turn off the electricity at your home’s electrical panel.
  • If you have a gas water heater, according to the DIY Network, you may change the water heater’s thermostat to “pilot” to complete this procedure.
  • Check your water heater’s owner’s handbook and follow the directions that are provided for your particular water heater.
  • Because your water heater is running at a high temperature, it is incredibly hot.
  • (According to, you should at the very least wait a few hours.) In addition, taking a hot shower can assist to accelerate the cooling process.) Step 4: Connect a hose to the drain valve.

Connect the other end of the hose to the drain valve located at the bottom of your water heater.

The hot water tap, such as a sink faucet, that is closest to the water heater should be opened.

According to the DIY Network, it is preferable to use a tap that is located on the floor above the water heater.

As soon as you turn on this valve, the water will begin to drain out of the storage tank.

Step 7: Reconnect the water supply to the tank and flush it with fresh, clean water to finish the job.

It is necessary to repeat this process until the water flows clean.

Step 8: Refill the tank with water.

Return the water supply to its original setting to begin replenishing the tank. Once the tank is full, turn on the electricity or gas supply to the water heater to re-energize it. While draining the tank, remember to turn off the faucet that you had previously turned on.

How Often Should You Drain Your Water Heater?

According to both and The Family Handyman, it’s a good idea to empty your water heater at least once a year in general. If you reside in a hard water area, on the other hand, according to Angie’s List, you may need to empty your water more often. Always remember to consult your owner’s manual to see what the manufacturer suggests before making any changes. Water heaters are relatively low-maintenance appliances, but it’s important to remember to drain yours on a regular basis. If you do this, you may be able to keep it working effectively and the hot water going.

Please keep in mind that a certain precaution may not be suitable or effective in every situation, and that adopting preventative steps does not ensure a positive outcome.

RV Hot Water Heater Guide: How to Operate, Fill and More

This post includes affiliate links for your convenience. Your RV hot water heater is a vital piece of equipment that allows you to enjoy the comforts of home while camping in the great outdoors. Having access to hot water for showering, washing your hands, cleaning dishes, and a variety of other duties is invaluable. Whether you’re using a propane, electric, tankless, or small tank hot water heater, this article will walk you through every element of this wonderful RV accessory. Every RV owner should be familiar with the operation of his or her water heater.

See also:  How Much To Fix Water Heater

Even while certain specifics differ based on the individual brand and model of water heater you have, many of the fundamental fundamentals are the same for practically all RV water heaters.

RV Hot Water Heater Basics

Most recreational vehicle water heaters will feature a 6-gallon or 10-gallon tank, however tankless heaters have grown increasingly popular in recent years.

Tankless Hot Water Heaters

Tankless water heaters are also referred to as “on demand” systems since they provide hot water on demand. These units can be powered by propane or electricity, which powers a heat exchanger in the device, which heats the water as it flows through it. Tankless means that there is no water in the unit other than the minimal amount of water that is stored in the internal pipework; this is why it is referred to as such. There were no items found. There were no items found.

On Demand Operation

Every time you turn on your hot water faucet, you are creating an artificial demand for hot water. Once the machine detects the presence of water flowing through the inner pipe, the heating elements immediately turn on and begin to warm the water in the tank. Water heats up to a temperature that is acceptable for washing and bathing in the brief amount of time it takes to travel through the sequence of internal piping.

When the hot water tap is turned off at the faucet, the tankless heater detects the interruption in the flow of hot water and shuts off the heating element to minimize energy consumption. At this moment, there is no longer a “demand” for hot water in the household.

Pros and Cons of Going Tankless

To be sure, tankless hot water heaters have the potential to deliver a continuous flow of hot water for showering, cleaning, and anything else you need until the power or gas supply is interrupted. This is a significant benefit over a standard tank-style water heater, which must be prepared before use and is typically limited to producing only warm water during periods of high demand. In addition to energy economy, which is important in an RV since saving gasoline and electricity is critical while traveling off the grid, there are several other significant advantages.

The cost of this type of hot water tank is one of its most significant disadvantages.

They also have a higher incidence of problems and malfunctions, despite the fact that technology is always advancing.

In general, the lower the GPM rating, the lower the flow rate must be to maintain the same pressure.

Hot Water Tank Heaters

Typical RV hot water tanks feature a 6-10 gallon tank or reservoir to retain water while the tank is being heated, similar to what is usually seen in residential hot water tanks. Mini-tank water heaters, on the other hand, have just lately entered the market, offering a “point-of-use” alternative that may be installed and connected directly to a sink or shower head. Check out the most recent offers.

Hot Water Tank Operation

Regardless of whether or not hot water is being utilized, the control unit will maintain a certain temperature in the tank as long as electricity and fuel are available to it. The temperature of the water in the tank is detected by a sensor that comes into contact with it. When the sensor detects a dip in water temperature, it sends a signal to the control module, which then activates the heating element in the water. There are several reasons for this, including the fact that the water has been lying around and has cooled down over time, or the fact that hot water is being used, which is sucking the water out of the tank and cold water is entering the tank in its stead.

The heating element may have difficulty keeping up with the demand for hot water after prolonged use, resulting in only warm water being offered.

Benefits of a Hot Water Tank

Traditional hot water tanks are less expensive than tankless alternatives, and they’re also rather reliable when it comes to performance.

Electric Water Heaters

If your RV is equipped with an electric water heater, the heating element will cycle on and off as needed to maintain the water temperature, so you won’t have to worry about turning it off while the RV is not in use. Electric water heaters provide the advantage of preserving your gas while also more efficiently maintaining the correct temperature of your water at all times. Unless your water heater has the capability of switching back to propane when you are not connected to shore power, you will be unable to boondock without using your generator for hot water when you are not connected to shore power.

  • HOT WATER HEATER WITH CONVENIENT STORAGE: A 4 gallon mini-tank with a heat exchanger that fits under your sink provides hot water just where it is needed. Thermal
  • Long-lasting quality: This electric water heater is simple to maintain and is made of high-quality glass-lined material, which ensures a long service life. (Amps
  • INSTALLATION WITHOUT A CENTRAL CONTROL: For independent installation or in-line with a big hot water supply, the 36-37″ chord connects into a 120 volt outlet.

Propane Water Heaters

Unless you’ve invested much in a high-end recreational vehicle, your hot water heater is almost certainly powered by propane. It requires the same procedure as all other propane appliances: the lighting of a pilot flame. Some RVs need you to manually ignite the engine with a lighter once you’ve parked and leveled the vehicle, but most contemporary RVs are equipped with direct spark ignition. To use direct spark ignition, all you have to do is switch on the water heater. As a result, if there is a requirement for water to be heated, the thermostat will detect this and the control circuit board will open the gas valve while simultaneously utilizing the igniter to produce a spark in the front of the gas burner tube.

The most significant advantage of using a propane generator is that it will not drain your RV’s house batteries.

This makes it an excellent choice for RVers who want to camp in more rural locations rather than in campsites or vacation parks.

Filling your Water Heater

When you turn on your water heater for the first time, or when you turn it on for the first time after winterizing, you’ll need to fill the tank with water before turning it on. The suggested water levels for your individual model will be listed in the owner’s handbook, but you may alternatively take the safe route and fill the tank entirely. If your water tank is equipped with a bypass or drain, make sure to close it before you begin filling it. Filling your hot water tank may be accomplished by utilizing water from your fresh water tank and the RV water pump, as described above.

Open the hot water faucets on all of your faucets after you have tightened all of your plumbing connections to avoid leaks.

When water is pouring out of all of your taps, you’ll know your hot water tank is about full. Although the water will not be warm at this point, it will alert you that it is safe to switch on your water heater without risking damage to the element.

How to Operate Your Hot Water Heater

Even though your hot water heater is powered by gas, it requires electrical electricity to operate. The electrical system of your home requires the activation of a number of different components in order for it to work properly.

Electrical Panel

If your hot water heater is electric, there should be a fuse or circuit breaker to supply power to it. This will power the electronic control board, the igniter, and the element, if your water heater is powered by electricity. It will be necessary for the water heater to function properly that the CB be in the “on” position or that the fuse be fitted and in functioning order.

On/Off Switch

The on/off switch is the next level of control, and it will be positioned on a main control panel or close to the device in question. Turn on the tank by flipping the switch to the on position; an indicator light will normally glow to indicate that the tank is operational.

Propane Supply

To ensure that your propane water heater is operational, make certain that the propane supply is switched on at the main tank. A shut off valve near the hot water tank may also be present and must be changed to the open position in order to function properly. It’s likely that you’ll hear the igniter clicking and, in some cases, even the flame blazing once you flip the on/off switch on. Additionally, the indication light should be lighted. If you’re using electric or propane to power your tank, it will typically take between 20 and 35 minutes for your tank to heat up depending on its size, the temperature of the water within the tank, and other factors.

Temperature Adjustment

Most RV water heaters do not come with the ability to modify the thermal limit switch; instead, you must learn to be a master of the mixing bowl in order to get the temperature you wish. Having said that, you have the option of replacing the thermal limit switch with an adjustable thermostat if you so choose to. It’s not a terrible thing to think about because you can save a lot of propane by setting the maximum temperature closer to tepid rather than lava hot with an adjustable thermostat, and replacing out the parts isn’t a difficult DIY job to complete.

Conserving Water and Energy

Because your RV’s water heater is likely to be considerably smaller than the one in your home, paying close attention to how and when you use your hot water will help you avoid running out of hot water when you need it the most. For example, if you use a lot of hot water to clean the dishes and then immediately turn around and hop in the shower, you won’t be able to enjoy that shower for as long as you would want. That one, believe me, is something I’ve learnt the hard way.

How to Drain Your RV Hot Water Heater

Just like you would do when checking the anode rod, you’ll want to switch off your water heater and then open the pressure release valve before attempting to empty it completely. This will prevent you from being shocked or burned throughout the process, which are both things I do not advocate you experience. By opening the pressure release valve at the top of the tank, you can ensure that you are not firing high-pressure water at yourself when you remove the plug. Once the tank has been equalized, you may remove the plug.

As an alternative to utilizing the flushing wand suggested above, you can turn on the city water again for a few minutes and let the water to flow in and out of the tank.

In order to keep your RV stored, winterized, or sterilized, you may want to use a hose to spray any material that may have come out of the water heater off of the exterior of it before shutting the panel door; but, your water heater should be OK otherwise.

A hot water tank drain is one of the numerous stages involved in preparing your RV for storage. There are several more. Check out our guide on winterizing an RV for the remainder of the procedures you’ll need to do to guarantee your RV is ready and problem-free when you hit the road in the spring.

Basic Hot Water Heater Maintenance

Make sure to turn off the electricity to your hot water heater before beginning any maintenance work, and then empty out any hot water that has accumulated in the tank using the procedure indicated above to remove any remaining hot water from the tank. As a general rule, propane water heaters will require a bit more maintenance than electric water heaters. This is mostly due to the fact that you’ll want to wipe out the burner tube on a yearly basis to ensure that there isn’t any debris obstructing the flow of gas.

Checking The Anode

Every season, you should examine the quality of your anode rod in all of your tanks, but especially at the beginning and conclusion of the season. The anode is a metal rod that is intended to corrode instead of the inner walls of your tank’s interior. Prior to performing any maintenance on the tank, cut off the electricity to the tank and allow the water within to cool for an hour or two. RV Water Heater Anode Rod – Magnesium Anode Rod Suburban Water Heaters SuburbanMorflo – RV Water Heater Anode Rod

  • • LONG-LASTING QUALITY: Constructed of high-quality magnesium that is particularly designed to be used and collected for a long period of time
  • • PROLONG WATER HEATER LIFE: The anode rod is a critical component of any water heating system that contributes to the overall longevity of the water heater. PROTECT HEATERS FROM CORROSION: This anode rod for RV and outdoor water heaters functions as an effective filter for water that is kept in the heater.

The first step is to release the pressure that has built up in your hot water storage tank. The pressure release valve on the outside of the water heater may be opened, or a hot water faucet in your RV can be opened with the pump switched off and the outer hose unplugged from the outside connection can be opened. To remove the anode rod, you’ll most likely need a 1-1/16-inch socket and a wrench; it’ll be placed towards the bottom of the tank and accessible through the vent door on the outside of your RV.

Prepare to get your hands a bit wet.

Once your water heater has been emptied, you can take advantage of this excellent chance to clean and flush out any sediment and debris that has accumulated in the tank by using a cleaning wand to flush out the tank.

Replacing The Heating Element

It’s probable that the heating element in your electric water tank will need to be changed at some time during your RVing experience. This procedure is analogous to that of changing the anode. After removing the electricity from the appliance, relieve the pressure in the tank and drain the tank following the procedure outlined above. Once the water has been drained from the element, unscrew the terminal screws and detach the wires from the element, making note of their locations. Take out the old element and replace it with a new one by using a wrench.

Replacing The Electrode

The electrode, often known as the igniter, is responsible for producing the spark that ignites the propane. If your water heater makes use of a two-prong electrode, it may only require a thorough cleaning. In order for the spark to leap between prongs and ignite the fuel, the electrode must be free of dirt. When using a single prong electrode, the same thing might happen, however the spark leaps to a neighboring metal surface rather than to a second prong. To remove the electrode, unhook the wiring from the device and unscrew the screw that holds it in place on the device.

It is possible to clean the electrode tip with steel wool or fine grit sandpaper and then reinstall it to test whether it still performs properly. If this is the case, replace the electrode with a new one by removing it in the reverse order that you removed the previous one from the circuit.

Closing Thoughts

After all, you purchased your RV in order to bring some of the comforts of home with you on the road, and learning how to properly fill and drain your water heater as well as how to operate and maintain your water heater can help to make that experience even more enjoyable.

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