How To Install A Gas Tankless Water Heater

How to Install a Tankless Water Heater

Instructions from a professional on how to remove an old water heater tank, prepare the area for installation of a tankless water heater, and finally install the tankless water heater Because it does not store a huge amount of heated water, a tankless water heater, also known as an on-demand water heater, saves money over a traditional water heater. Essentially, it serves to give hot water on demand, so you won’t have to worry about the shower suddenly being chilly. The process of installing a gas tankless water heater consists of mounting the unit, connecting the gas and water lines, and installing a flue.

Therefore, it may not function well in a family where two or three showers may be operating at the same time, as an example.

It is both small and very efficient to use a tankless water heater.

The following skills are required if you opt to conduct the task yourself: shutting off the water to your house (seeHow to Shut Off the Water to Fixtures) and cutting into and connecting new fittings and pipes to your supply pipes (if you have copper pipes, seeCuttingJoining Copper Pipe).

There is also the need for a gas line and an electrical connection to a 120-volt circuit.

It is not necessary to vent an indoor electric tankless water heater to the outdoors because it is contained within the home.

It may either be hooked into a 240-volt outlet or directly attached to a power source such as a generator.

Tankless Water Heater Preparation

Remember to complete all essential preparations before disconnecting and removing your present water heater; you don’t want to be without hot water for a week or two while you wait for any plumbing, electrical, or vent work to be completed. If you are installing a new gas unit, you should determine whether you need to upgrade your gas meter. Because the unit consumes a considerable amount of BTUs, it is possible that your meter does not have the capacity to feed it in addition to the other gas-using appliances in your home.

Request that the gas provider inspect your new unit to ensure that it is receiving the appropriate amount of manifold pressure for it.
It is better to employ a professional plumber to install a new gas line if you need to replace an existing one.
This will save you time and money.
The fact that a tankless water heater generates a significant amount of condensation and pushes air out with a fan necessitates the installation of category II stainless-steel exhaust pipe with firmly sealed silicon joints, as seen in the second video below.
A damper is an excellent addition for those who live in colder climates since it prevents chilly air from re-entering the home.
Floor drains and utility sinks should be used to dispose of the excess liquid.
In addition to gas, a gas unit requires 120-volt electrical power.
You can watch this wonderful video from This Old House, which will provide you with an excellent explanation of the many stages involved in installing a tankless water heater.
He makes the decision to remove and replace his malfunctioning water heater with a tankless water heater, and he guides us through the entire procedure with his hands on assistance.
Codes demand that a subpanel (which may or may not be included with the unit) be erected next to the unit in order to comply.

Connect the wire to the subpanel and then from the subpanel to the unit, starting at the unit. It is essential that the electricity to the water heater’s circuit is turned off at all times while the work is being performed. +Find a Water Heater Installation Specialist in Your Area

Removing the Old Water Heater

Remember to complete all essential preparations before disconnecting and removing your present water heater; you don’t want to be without hot water for a week or two while you wait for necessary plumbing, electrical, and vent work to be completed. As part of the installation of a new gas unit, you should check to determine if you need to upgrade your gas meter. It’s possible that your meter doesn’t have the capacity to feed the unit, as well as the other gas-using appliances in your home, because the device consumes a considerable amount of BTUs.

Have the gas provider check to verify that it is supplying the proper amount of manifold pressure for your new unit, as well.
For any gas line installation work, it is recommended that you contract with an experienced plumber.
Venting will be required for an inside gas unit as well.
The plastic pipe seen in the This Old House movie below may be appropriate for use with a high-efficiency tankless water heater, as demonstrated in the video above.
Installing a condensate drain on your heater, depending on the manufacturer and type, will drain the water from condensation through a plastic tubing connection.
All plumbing and venting requirements should be determined by consulting the manufacturer’s documentation.
Plan to either connect it into a nearby outlet or wire it straight to a junction box to keep it from becoming damaged.
This in-depth video, produced by Ron Hazelton, describes how a failed conventional water heater can result in debris in your water, which can clog faucet aerators, shower heads, and other water-using equipment in your house.
It is recommended that you hire an electrician if you are installing an electric water heater that requires 240-volt electrical power unless you are confident in your abilities.
With its own circuit breakers, you may immediately withdraw power from the device if the situation calls for it, as this subpanel has.

It is essential that the electricity to the water heater’s circuit be turned off at all times while the repair is being performed. Water heater installation professionals might be found in your neighborhood.

Installing a Tankless Water Heater

Tankless units can be fitted flush against the wall (against the drywall or plaster), or they can be inserted into the wall between the studs. Using a stud finder, identify the studs in the wall where you want to install the unit, and then cut a hole between each of them. Attach the item to the wall in accordance with the manufacturer’s recommendations. Water supply pipes should be routed to the water heater. Make certain that the pipe from the water utility is linked to the inlet and that the pipe flowing to the home is connected to the outlet before starting the project.

You might also want to consider installing a pressure-relief valve.
The water valves should be opened, but not those for the power or gas.
Close the water valves and turn off the water.
Replace the filter, turn on the water valves, turn on the electrical power, and turn on the gas valves if necessary.
Resource Highlighted: Find a Pre-Screened Water Heater Pro in Your AreaCall today for free estimates from pre-screened water heater professionals in your area: 1-866-342-3263

How to Install or Replace a Tankless Water Heater

Despite the fact that it’s a tankless job, someone has to do it. Leaving aside the dad jokes, installing a tankless water heater is a serious undertaking that should be approached with caution. Our goal is to make this process as simple and pleasant as possible, so we’ve included step-by-step instructions for both gas and electric units below. Take note that replacing a tankless water heater is a time-consuming process requiring advanced technical knowledge. So, if you aren’t confident in your plumbing and electrical abilities, it is preferable to engage a licensed professional – in certain areas, this is a legal requirement.

Installation and replacement of tankless water heaters may be quite expensive, as we realize. Installing your own unit is doable, but we recommend that you proceed with caution. This should only be attempted if you have extensive experience working with gas lines, water lines, and electrical systems. Installing your tankless water heater incorrectly might result in significant harm to your home. Unsafe gas line installation may cause explosions, while faulty gas venting can result in deadly carbon dioxide leaking into your house.

If you are considering a do-it-yourself installation, it is critical that you understand the terms of your insurance policy.

You can install your unit yourself if you are confident in your abilities and have double-checked with your insurance company. The instructions below will guide you through the process.

Step 1

Depending on the manufacturer, if their systems are not installed by certified professionals, the warranty may be voided.

Step 2

Make certain that you obtain all necessary state or local permissions before installing or upgrading a water heater.

Step 3

For water pressure more than 80 psi, you’ll need to install a pressure-reducing valve upstream of the new water heater before it will work properly. When establishing the cold and hot water connections (as described in the section below under “Establish the cold and hot water connections”), you should consider whether or not you need to install one.

Step 4

Make sure you check your local construction codes to see where you may put your water heater in your home. These tankless gas systems must be vented directly to the outdoors, rather than through a chimney, in order to function properly. Consequently, it is vital to identify a position where the unit may readily vent outdoors while also complying with local code requirements for vent placement. Carefully review the manufacturer’s installation instructions to ensure that you have adequate clearance around the device
Stay away from locations where:

To find out where you may put your water heater in your home, check with the building code in your area. Tankless gas units must be vented directly to the outside through a pipe, rather than through a chimney, in order to function properly. Because of this, it is essential to identify a site where the unit can quickly vent to the outside while also complying with local code requirements for vent placement. To ensure that you have appropriate clearance around the device, carefully read the manufacturer’s installation instructions. Stay away from locations that include the following characteristics:

Step 5

Make careful to accurately measure the space where you intend to install the water heater to ensure that you acquire the appropriate-sized unit.

Step 6

Tankless gas water heaters consume more gas than traditional tank-style water heaters. Determine whether or not your present gas line will be sufficient initially
If not, upgrade it. A professional contractor will be required to install a newer, larger gas pipe if your present gas line is unable to keep up with the demand.

Step 7

If there isn’t a shut-off valve before the heater, cut off the main water supply
Otherwise, turn off the heater. Remove the heater from service by closing all power and gas supply valves to it. Disconnect the unit’s power

When dealing with hot water, utilize a hose that is designed to tolerate high temperatures. To relieve pressure in the system, open a hot water faucet for a few minutes. Allow it to completely drain

Ensure that the water heater is disconnected from the gas and water pipes. Make sure to properly dispose of your old water heater.

The water heater should be disconnected both from the gas and water supply pipes. It’s important that you properly dispose of your old water heater

Step 8

Ensure that the device is properly supported by constructing a mounting box that is approximately four inches away from the wall. The foundation wall should be properly secured with appropriate anchors. Follow the manufacturer’s instructions for mounting the device to the box firmly.

Step 9

Hiring a professional contractor should be your first choice unless you have extensive knowledge with gas line installations. Utilize a threaded black iron pipe to connect the existing tee to the unit position if your present gas line is the suitable size and you can connect it without breaking the existing connection. Remember to switch off the main gas line before removing the down pipe from the previous unit if you’re replacing it. After ensuring that the gas line is routed to the right location, you should install a tee, a sediment trap, and a gas shut-off valve. The shutdown valve and sediment trap should be connected to the heater in accordance with the manufacturer’s instructions. Install a new gas supply line from the tee to a location where it can be conveniently connected to the gas line of the new unit. You may utilize a black pipe or a flexible gas supply line to accomplish this task. Assemble the connections in the direction of the heater, starting with the tee, using two wrenches. Whenever possible, use thread sealant developed for gas lines when connecting gas pipe assemblies. After you have completed all of the gas line connections, you should test the line. Before turning on the gas, check the pressure with a pressure gauge.

Step 10

You should employ a professional contractor if you don’t have much expertise with gas line hookups. Utilize a threaded black iron pipe to connect the existing tee to the unit position if your present gas line is the suitable size and you can attach it without a problem. It’s important to remember to switch off the main gas line before disconnecting the down pipe for the old unit. Install a tee, a sediment trap, and a gas shut-off valve once you have ensured that the gas line is routed correctly. Connect the shutdown valve and sediment trap to the heater according to the manufacturer’s instructions. Install a new gas supply line from the tee to a location where it can be readily connected to the gas supply line of the new unit. Using a black pipe or a flexible gas supply line is an option
However, Assemble the connections in the direction of the heater, starting with the tee, using two wrenches to help you. Whenever you join gas pipes, use a thread sealant developed for gas lines. You should test the gas line when you have completed all of the connections. Before starting the engine, check the gas pressure with a pressure gauge.

Connecting new hot and cold water lines to existing water lines should be done with copper pipe. Continue to connect the wires to the new unit. It is possible that copper pipe will need to be cut and soldered to the unit.

Depending on whether your water system includes an anti-siphon valve or a check valve on the supply line, you may require an expansion tank close to the cold intake. More information can be found in your vehicle’s owner handbook. Bell hangers should be used to secure the pipe to the wall. Place the pressure relief valve in its proper location. Installing a purge valve and a pressure relief valve should be done according to the manufacturer’s instructions.

Step 11

Make sure there are no leaks by turning on the water supply. To check for leaks, turn on the gas and wait a few minutes. It is possible that you will need to bleed the line. Afterwards, switch off the gas supply until the installation is complete.

Step 12

Make sure there are no leaks by turning on the water. To check for leaks, turn on the gas and wait a few moments. Depending on the situation, you could be required to bleed the line. Afterwards, switch off the gas supply until the installation is completed.

Step 13

To remove air from the water pipes and heater, turn on the faucet to its full “hot” setting. Close the water supply valve

Step 14

If you want to remove air from your water pipes and heater, turn on a faucet to its maximum “hot.” Close the water supply valve.

Step 15

The hot water line that originates from the water heater should be insulated.

Step 16

The gas should be turned on when the installation is complete. Your water heater should be up and running at this point!

How to Install an Electric Tankless Water Heater

Installation and replacement of tankless water heaters may be quite expensive, as we realize. Installing your own unit is doable, but we recommend that you proceed with caution. This should only be attempted if you have extensive experience working with water lines and electrical systems. Installing your tankless water heater incorrectly might result in significant harm to your home. If you are considering a do-it-yourself installation, it is critical that you understand the terms of your insurance policy.

You can install your unit yourself if you are confident in your abilities and have double-checked with your insurance company.

Step 1

Depending on the manufacturer, if their systems are not installed by certified professionals, the warranty may be voided.

Step 2

Confirm that your electrical service panel has the capacity to manage the energy demands of an electric tankless water heater before installing one. It’s possible that you’ll need to upgrade your panel or install a whole new one. It is possible to uncover useful information by inspecting your electrical breaker box or the label on the electrical panel in your home. You might also consult with an electrician. The majority of suitable water heaters require a minimum of four 40AMP breakers to deliver hot water for a two and a half bath house.

Step 3

Examine your electrical service panel to see if it is capable of handling the increased energy demands of an electric tankless water heater. Your panel may require an upgrade or you may need to install a whole new one. You can look at the electrical breaker box or the label on your electrical panel to locate pertinent information.

Alternatively, an electrician might be contacted for assistance. The majority of suitable water heaters require a minimum of four 40AMP breakers to deliver hot water for a two and a half bath residence.

Step 4

Make certain that you obtain all necessary state or local permissions before installing or upgrading a water heater.

Step 5

In order to heat water for the entire house, it is best to locate the unit closest to the area in which the majority of the hot water is consumed. If you’re installing a point-of-use system, try to locate them as near to the points of use as feasible. Always keep in mind that most electric tankless water heaters must be mounted vertically, with the water and electrical supply connections on the bottom of the unit. Follow the manufacturer’s recommendations for leaving a particular amount of clearance for service
In general, you want to stay away from locations where:

Temperatures below freezing might have an impact on the unit. Any form of liquid might be sprayed on the device on a regular basis. There is a significant amount of humidity and wetness

Step 6

Disconnect any circuit breakers that are connected to the new device. This is critically crucial!

Step 7

You don’t want your office to become a swamp!

Step 8

If there isn’t a shut-off valve before the heater, cut off the main water supply
Otherwise, turn off the heater. Remove the heater from service by closing all power and gas supply valves to it. Disconnect the unit’s power

When dealing with hot water, utilize a hose that is designed to tolerate high temperatures. To relieve pressure in the system, open a hot water faucet for a few minutes. Allow it to completely drain

Ensure that the water heater is disconnected from the gas and water pipes. Make sure to properly dispose of your old water heater.

The water heater should be disconnected both from the gas and water supply pipes. It’s important that you properly dispose of your old water heater

Step 9

Remove any screws that are holding the front cover of the new device in place
And Please keep in mind that you may need to remove at least one plug before you can set it aside.

Step 10

A set of adequate anchors and screws should be included in the box.

Step 11

Connections for the cold and hot water should be made. The right side of the body is commonly affected by a cold.

The quickest and most straightforward method is to use stainless steel flex pipe with Teflon tape. You can also utilize copper tubing that has been rated for use in high-temperature environments. If you have to cut into a pipe, make sure the edges are clean. Before connecting the pipes to the water heater, flush them with water once they have been soldered. Also keep in mind that too much heat might cause harm to the water heater. If you want to do maintenance on your heater, it’s a good idea to install a shut-off valve before and after it. This will allow you to stop off the water supply to the unit without shutting off the water supply to the rest of your home
If you need to install a pressure reduction valve, you should do it immediately on the cold water side of the plumbing system. The installation of a temperature and pressure relief valve is unlikely to be necessary (T P). However, you should double-check your local and state installation rules to see whether or not you require a permit.

Step 12

By opening various hot water outlets, you may remove any trapped air from the device and the pipes. While you’re waiting, you should inspect each and every connection for leaks.

Step 13

Open various hot water outlets to remove any trapped air from the unit and the pipes. In the meanwhile, examine every connection for leaks; this should take a few of minutes.

Step 14

Remove any trapped air from the device and the pipes by opening a number of hot water faucets. While you are waiting, you should inspect each and every connection for leaks.

For the most appropriate torque, see the product handbook. It is important to remember that a ground conductor must be connected to the circuit breaker panel and the grounding busbar of the unit for each circuit.

Double-check that all of the electrical connections are in proper working order and that all of the wire sets have been appropriately installed.

Step 15

Make use of the screws that you already removed.

Step 16

The device should be turned on at this point. Select your chosen unit settings from the drop-down menu.

Step 17

Start by turning on the hot side of a faucet in your home. After the water temperature has steadied, take another reading. The temperature can be adjusted on the unit itself if you want to do so.

Learn More About Tankless Water Heaters

Right now, our plumbing professionals are here to take care of your repair needs. They’ll assess your situation, propose a solution at a reasonable fee up front, and then get to work!

Upfront Pricing

There are no hidden fees.

Quality Work

Guaranteed 100 percent customer satisfaction

24/7 Service

Guaranteed complete customer satisfaction

DIY Tankless Water Heater Installation Is Dangerous

However, just because there are safety procedures in place to prevent hot water tanks from exploding does not imply that they are impenetrable to failure. When unlicensed individuals install hot water tanks, the possibility of something like this occurring increases, and the likelihood that they will not have the necessary insurance to pay the damage if it does occur increases. Water heaters, in particular, those run on gas are extremely combustible. An explosion or a fire might occur if one of the installation’s components is mishandled.

Carbon Monoxide Leaks

They are undetectable by the human senses, which is why they are referred to as a silent killer. A competent plumber can help you avoid carbon monoxide poisoning by ensuring that your system is properly vented before the problem occurs. Nonetheless, a CO detector should always be installed. This procedure is crucial for in-home safety, but it is frequently performed incorrectly by inexperienced repairmen. Whatever number of ancient systems your uncle installed years ago, please do not make the fatal error of attempting to install your own water tank on your own dime.

In many cases, amateur installation is not covered by your guarantee.

The majority of internet sales and purchases are canceled right away.

Without proper installation, the hot water heater may be damaged or even destroyed, and why should the manufacturer be responsible for such a thing?

DIY Can Hurt Your Property Value

Sure, you might be able to do a plumbing task on your own and save some money, but is your handy work up to code?

Did you get a permit to do this? When it comes time to sell your property, such blunders might end up costing you a lot of money in the long run.

Thinking of upgrading to a tankless water heater? Before doing so, learn the pros and cons of installing one

Are you considering making the switch to a tankless water heater? Before doing so, educate yourself about the advantages and disadvantages of installing one, including the cost, needs, and upkeep. It is possible that you are considering installing a tankless water heater in your house if it is time to replace your current water heater. We’ll explain how tankless water heaters function and point out some of its pros and downsides to assist you in making the best decision about which kind to install.

Do you require an expert right away?

To make a reservation, please click here.

The services available differ depending on the market.

How Tankless Water Heaters Work

Known variously as demand type, on-demand, or instantaneous water heaters, these appliances heat water directly, eliminating the need to store water. A flow detecting device is installed in a tankless heater, and it is triggered anytime the hot water tap is opened. A gas burner or an electric element is used to heat the water, which is then sent to the various locations in your home where it is needed. You won’t have to worry about running out of hot water because there isn’t a tank that has to be filled.

Advantages Of Tankless Water Heaters

They are more compact than typical storage heaters, are wall-mounted, and do not take up any floor space when not in use. As a result of their size, they can be particularly appealing in houses where space is limited
They can also help you save money on your energy bills. According to the United States Department of Energy, heating water accounts for around 30% of a family’s total energy use. It is possible to save up to 50% on these expenditures by installing a tankless water heater, resulting in an average yearly savings of $80. Tankless water heaters are also more durable and less likely to malfunction, resulting in potentially disastrous flooding in your house. Compared to traditional water heaters, tankless systems have a lifespan that is about twice as long – 20 years or more.

Disadvantages Of Tankless Water Heaters

Tankless units are more costly than conventional units. It will cost around the same as a standard tank type to purchase an electric tankless heater, however a gas tankless heater would cost between $1,000 to $1,200. The national average for tankless unit installation is somewhat more than $1,700, which is in addition to the original cost of the unit. A safe vent must be created for a gas unit to prevent carbon monoxide from collecting within the property in many circumstances. Existing plumbing must also be expanded or moved in many cases. Tankless water heaters do not provide “instant hot water,” even when energy savings are taken into consideration
For many households, it will take around 20 years to completely return their expenditures. It is not always the case that a tankless water heater delivers hot water to your faucet any faster than a traditional water heater, contrary to common belief. In fact, a tankless device may be more time consuming. It takes some time for the tankless unit’s heating element to warm up the water before it can be delivered to the faucet
The amount of hot water that can be delivered is limited by the unit’s ability to heat the water. It is typical for tankless water heaters to provide 2-5 gallon-per-minute flows of hot water, which may not be sufficient for several simultaneous uses of hot water in your home. For example, having a shower and running the dishwasher at the same time may cause a tankless water heater to reach its maximum capacity and fail. Comparing tankless versions, especially if you live in a multi-person home, is important. Pay close attention to the gallons per minute (GPM) flow rate of each type. The bigger the number of users and the greater the number of simultaneous usage options, the higher the GPM requirement. In order to satisfy the needs of a big home, one alternative is to install many tankless units
However, this can become quite costly over time. It is possible that tankless water heaters will not provide hot water during a power outage. Tankless water heaters, in contrast to traditional water heaters, do not provide a backup hot water supply in emergency scenarios
Tankless systems are also subject to failure owing to hard water. Hard water is a concern for all water heaters, but it is particularly challenging for tankless water heaters. They should be completely emptied and their filters updated on a monthly basis. They also require frequent flushing to function properly. (Tank units only need to be flushed once or twice a year, at most.) If you don’t take the necessary precautions, hard water can completely ruin a tankless water heater in as little as two years. In addition, failing to adhere to these maintenance requirements may result in the voiding of the manufacturer’s guarantee
Tankless devices are hard to maintain. Investigate the interior workings of a common tankless water heater or air conditioner. As a result of all the complex technologies tankless water heaters rely on, it is easy to understand how much may possibly go wrong.

Gas or Electric

It is more expensive to buy a tankless unit. It will cost around the same as a standard tank type to purchase an electric tankless heater, however a gas tankless heater would cost approximately $1,200 to $1,400. The national average for tankless unit installation is somewhat more than $1,700, which is in addition to the original cost of the system. A safe vent must be created for a gas unit to prevent carbon monoxide from collecting within the residence in many circumstances. Existing plumbing must be expanded or moved in many cases.

It is not always the case that a tankless water heater delivers hot water to your faucet more quickly than a traditional water heater, contrary to common belief.
While the heating element of a tankless water heater heats water before sending it to a faucet, this process takes time, and the amount of hot water that can be delivered is limited by the unit’s ability to heat the water.
As an example, having a shower while also running the dishwasher may cause a tankless water heater to reach its maximum capacity.
When comparing tankless models, pay attention to the gallons per minute (GPM) flow rate of each type.
A possible option is to install many tankless units in order to cover the needs of a big household, although this might become prohibitively expensive; alternatively, The tankless water heaters will not operate if the electricity goes out.
For all water heaters, hard water can be an issue; however, tankless water heaters are particularly susceptible to this problem.
They must also be cleansed on a consistent basis.
Without taking these precautions, hard water can completely ruin a tankless water heater in less than two years if it is not properly maintained.

Investigate the interior workings of a typical tankless water heater or air conditioning equipment. As a result of all the complex technologies tankless water heaters rely on, it is easy to understand how many things may go wrong.

Water Heater Protection

Tankless units are more costly than traditional tanks. It will cost around the same as a standard tank type to purchase an electric tankless heater, while the cost of a gas tankless heater will be approximately $1,000 to $1,200. Aside from the initial expense, the national average for tankless unit installation is somewhat more than $1,700. A safe vent must be created for a gas unit to prevent carbon monoxide from collecting within the property in many circumstances. In addition, existing plumbing must be expanded or moved.

In fact, a tankless unit may be far slower.
A tankless heater typically produces hot water at a rate of 2-5 gallons per minute, which may not be sufficient for numerous simultaneous uses of hot water in your home.
If you have a large family, evaluate tankless water heaters, paying close attention to the gallons per minute (GPM) flow rate of each model.
One approach is to install many tankless units in order to cover the needs of a big home, but this can be quite expensive.
Due to the inability of tankless water heaters to provide hot water as a backup in certain emergency scenarios, they are more prone to failure than traditional water heaters.
They should be completely emptied and their filters should be changed on a monthly basis.
(Tank units only need to be cleaned once or twice a year.) Unless you follow these precautions, hard water can completely ruin a tankless water heater in less than two years.
Investigate the interior workings of a common tankless water heater.

DIY Water Heater Installation

Tankless units are more costly. It will cost around the same as a standard tank type to purchase an electric tankless heater, while the cost of a gas tankless heater will range between $1,000 and $1,200. Aside from the initial cost, the national average for the installation of a tankless unit is somewhat more than $1,700. In many situations, existing plumbing must be expanded or moved, and in the case of a gas unit, a safe vent must be provided to prevent carbon monoxide from collecting within the property.

In fact, a tankless unit may be slightly slower.
Typically, hot water comes from a tankless heater at a rate of 2-5 gallons per minute, which may not be sufficient for numerous simultaneous uses of hot water in your home.
If you live in a multi-person home, compare tankless models, paying close attention to the gallons per minute (GPM) flow rate of each type.
One approach is to install many tankless units to suit the needs of a big home, but this may be quite expensive.
Owing to the inability of tankless water heaters to provide hot water as a backup in these emergency scenarios, they are subject to failure due to hard water.
They should be completely emptied and their filters should be replaced on a monthly basis.
(Tank units only need to be flushed once or twice a year at the most.) If you don’t follow these precautions, hard water can completely ruin a tankless water heater in as little as two years.

Examine the interior workings of a common tankless water heater. With all of the complicated technology that tankless water heaters rely on, it is easy to understand how much may go wrong.

Introduction

When your water heater begins to leak, you must act quickly to have it repaired or replaced. We’ll teach you how to set up your own natural gas water heater in less than a day’s time. Even if you do not require a new water heater at this time, it is likely that you will require one within the next few years. Water heaters typically have a lifespan of seven to fifteen years. If yours is beginning to show signs of wear, this post is also for you. If you’re familiar with basic equipment and have a little expertise soldering copper, replacing a water heater shouldn’t be too tough.

Tools Required

Water and gas piping
Discharge pipe
Fittings
Pipe thread compound
Pressure relief valve
Solder. Ventilation pipe and connections
Pressure relief valve.

Getting Started Installing Your New Hot Water Tank

In this example, we’re swapping out a natural gas water heater for an electric water heater. The processes for replacing a propane water heater are identical to those for replacing an electric water heater, and the steps for replacing both are comparable. In any event, when it comes to arranging a water heater replacement, it’s best to be cautious. Call your local department of inspections and inquire as to whether or not you require a permit. Also, be certain that your work is checked by a plumbing or electrical inspector.

Plumbers normally charge between $45 and $65 per hour and can complete the installation of a water heater in a day or as little as 6-8 hours.

Gas water heaters with particular venting systems are also available, although they are more costly.

Water Heater Parts and Breakdown

As part of our demonstration, we’re swapping out a natural gas water heater. Replacing a propane water heater is identical to replacing an electric water heater, and the procedures are almost identical. Anyhow, when it comes to replacing your water heater, it’s best to be cautious. To find out if you require a permission, contact your local department of inspections. Additionally, ensure that your work is checked by a plumbing or electrical inspector. Expenses associated with installation and labor Water heater installation is often completed in a day or within 6-8 hours by a plumber charging $45 to $65 per hour. For the most part, a gas or electric water heater will cost between $150 and $400, with an additional $200 to $450 for professional installation. Gas water heaters with specialized venting systems are also available at a higher price point, though. We will not cover them in this article because they are more complicated to install.

When to get a new water heater

When the tank of your water heater leaks, your water heater is out of commission. An indication that your water heater needs to be replaced is a gradual drop beneath the unit, which commonly manifests itself as a trail of discolored water. This indicates that the steel tank has corroded through and will be unable to be repaired. Other symptoms, such as little or no hot water, are typically indicative of other water heater repair issues that may be resolved by you. If you notice a drop, make a plan to get the water heater replaced as soon as possible.

New water heaters are sent with detailed installation instructions as well as several cautions to ensure that the gas, electrical, and other connections are handled properly.

However, you should be aware that you will be dealing with natural gas, propane, or electricity, all of which are potentially harmful.

And, after you’re finished, get your work examined.

Plumbing codes differ from one location to the next. You should explain to your local plumbing inspector how you want to install your new connections, including the sorts of materials you intend to use. Instead of making changes afterwards, it is preferable to seek advice early.

Figure A: Gas Water Heater Details

Mr. Fix-It-Up-For-The-Family See the Additional Information section at the end of this article for instructions on how to print this image.

Figure B: Connections for Steel and Plastic Pipe

Mr. Fix-It-Up-For-Us. The Additional Information at the conclusion of this article provides instructions on how to print this image.

Project step-by-step (12)

Turn off the gas to the water heater by twisting the shutdown valve a quarter turn away from the water heater. When the handle is turned off, it should be at a straight angle to the pipe. Also, turn off the main water supply and drain the pipes by opening a tap on the lowest floor of the building. Step No. 2

Drain the water in the tank

Connect a garden hose to the drain valve and use it to drain the water that has accumulated in the tank. The water will be boiling hot, so proceed with caution! With a pair of wrenches, disconnect the gas line at the neighboring union and remove the pipe from the gas control valve with a pipe wrench to complete the task.

Sign Up For Our Newsletter

Complete your do-it-yourself tasks like an expert! Become a subscriber to our newsletter! Do It Right the First Time, and Do It Yourself! Step number three.

Cut off the water lines

The vent pipe should be moved to the side once it has been unscrewed from the vent hood. After that, using a tube cutter, cut the hot and cold water lines. For galvanized pipe, remove the unions and, if you have them, remove the nuts on the flexible connections as well. Move the old water heater to the side of the room. Step number four.

Attach the relief valve

Teflon tape should be used to seal the threads of the new temperature and pressure relief valve (three turns). With a pipe wrench, tighten it inside the tank until it is completely sealed. Glue a copper discharge pipe to the wall (see Fig. A for routing details). Step number five.

Attach pipe assemblies

Solder fresh copper adapters to 6-in. lengths of 3/4-in. copper pipe and screw the assemblies into the hot water outlet and cold water inlet ports on the top of the tank’s tank’s tank’s tank. Make use of short, plastic-lined nipples to protect your pipes from galvanic corrosion, especially if you have hard water or if they are required by your local building standards. Step 6: Organize your thoughts and feelings about the situation.

Attach the water lines

Slide the new water heater into position, recut or lengthen the old tubing to connect it to the new, and solder the tubing together using copper slip couplings to complete the installation. If the tubing does not line up properly, use pairs of 45-degree elbows to adjust the alignment of the lines. Step 7 – Organize your time and resources.

Reattach the vent

Reconnect the vent if necessary. Place it securely over the draft hood and secure it with three 3/8-in. No. 6 sheet metal screws to hold it in place. Prepare the holes by drilling them beforehand. Before turning at the first elbow, the vent should rise at least 12 inches vertically from the floor. In this eighth step, you will learn how to use a comma to separate the words “and” and “and not.”

Use two wrenches to attach the gas line

Reconnect the gas line if necessary. Pipe joint compound should be applied to the threaded ends before screwing the first nipple into the gas valve. To minimize straining the valve, use two pipe wrenches at the same time. Reassemble the remaining nipples, concluding with the union at the end of the process (Photo 2). Then, in order to fill the tank, perform these four steps: To check for leaks, perform the following steps: (1) cut off the main water valve; (2) re-connect the water at the main shutoff; (3) open the cold-water valve on the water heater (but do not close it); and (4) turn on a nearby hot-water faucet until water flows out.

Check for backdrafting

The majority of water heaters rely on a natural airflow to carry combustion emissions up the chimney and out of the building. If the draft does not operate, the fumes, which may contain lethal carbon monoxide, will be released into your home and cause you to become sick. Check the draft when you’ve finished installing everything. Close all of your external doors and windows, and put on the exhaust fans in your kitchen and bathroom. Continue to run a hot water faucet until you hear the gas burner in your water heater come to life.

Ideally, the smoke should be drawn upward through the vent pipe.

Turn off the gas supply to the water heater and contact a certified plumber to diagnose and remedy the problem.

Check for leaks

Check for leaks by turning on the gas and squeezing a 50-50 combination of dishwashing liquid and water over the connection points. If there are bubbles in the mixture, you have a leak. Joints that are leaking should be tightened or reconnected. When you’re finished, wipe the joints down with a clean cloth. Make an appointment with the plumbing inspector to have them go at your work. Follow the how-to instructions that are included with the photographs to ensure that the connections are secure.

Light the pilot light

The pilot light should be turned on in accordance with the manufacturer’s instructions. (When using an electric water heater, turn on the electricity at the main panel after your work has been checked by the electrical inspector). Once you’ve finished, adjust the temperature to 120 degrees Fahrenheit according to the installation instructions. The pilot light in the new water heater should be lit, then the temperature setting should be adjusted.

Installation Details for Electric Water Heaters

At your main electrical panel, turn off all power to your water heater, then turn it back on. After that, empty the water heater in the same manner as you would a gas water heater. As soon as the water heater has been drained, separate the electrical wires from the screw terminals under the access panel, which is normally situated towards the top of the water heater. To handle all of the electrical wiring, you should engage an electrician if you don’t have any prior knowledge with it. When it comes to wiring the new water heater, follow the manufacturer’s instructions.

x 4-in.
metal electrical box on the wall or ceiling near the water heater, route the old wires to the box, and then run a new length of armored cable or electrical conduit to the water heater to complete the installation.
The circuit should also have a shutdown switch that is visible from the vicinity of the water heater.
You’ll almost certainly require a permit.
Aluminum wire needs specific care and handling.

If you have aluminum wire, you should choose a qualified professional who is experienced in working with it. This wiring is a dull gray color, rather than the drab orange color that is characteristic of copper wiring. ‘Step 12’ is the final step in the process.

How to Dispose of a Water Heater

In this video lesson, Jeff Gorton, an editor at The Family Handyman, will show you how to remove and dispose of a water heater in the proper manner. He will also demonstrate a simple method of transporting a water heater out of your home, even if you are working on your own.

These tips will make your work go faster and easier:

To avoid modifying the length of your water, gas, or electrical lines, take note of the height of your existing water heater and get a new one that is the same height
On older water heaters, the drain valve (Photo 2) frequently becomes clogged. Please be patient if the water drains slowly. WARNING: The temperature is really high! TIP: Turn off your water heater two hours before you want to use it to enable the water to cool. Water heaters are around 150 pounds in weight. When you’re moving the old one out and wheeling the new one in, you’ll need a strong partner or a dolly to assist you. Ordinarily, garbage collection agencies charge approximately $25 to remove the old one. Before you begin, go to a plumbing supply or hardware store, or a home center, and purchase the equipment and materials seen below. Check the sizes of the water supply pipes (the majority will be 3/4 in., as shown in our photographs) and purchase the fittings that are the proper size. If you have everything you need, you should be able to complete the work in four to six hours (provided there are no major problems!). This safety mechanism, which controls tank pressure and prevents it from bursting, is located in the tank’s pressure relief valve assembly (Photo 4). It is necessary to include a fresh one with each installation. The discharge pipe must be kept clear of impediments in order for the valve to function correctly (see Fig. A). Use 3/4-in. plastic-lined nipples (about $2 each
Photo 5 and Fig. A) to attach other metals, mainly copper tubing to the steel tank, in areas where the water is highly mineralized or where it is needed by municipal laws. This has the effect of slowing rusting. In order to avoid heating the tank itself during soldering, solder the copper fittings before screwing them to the tank (Photo 5)
Slip couplings should be used to link the existing and new water lines (Photo 6). (Photo 6). They do not have an internal stop, in contrast to normal couplings. Alternatively, you may slip them on, align the copper tubing, then slide them back and center them over the junction
However, the new inlets and outlets on the tank don’t always line up with the old supply lines, and vice versa. If required, solder in a pair of 45-degree fittings to ensure that each line is offset. While you’re doing it, you should also replace the old cutoff valve with a new ball valve (Photo 6). The diameter of the vents is determined by the amount of heat produced by the water heater. In order to achieve the ideal draft, you may need to raise or reduce the ventilation size. CAUTION: If you’re not sure whether or not your chimney has a liner, consult with a plumbing inspector. Make gas connections using solid steel pipe (Photo 8) or soft copper tubing with flare fittings (Fig. A). Both are more dependable and less expensive than flexible stainless steel connections, which are not usually allowed in some applications. For the same reasons, rigid copper water supply lines should be used rather than flexible copper water supply lines
If your water heater replacement is located in a location where leaking might cause damage to the floor or other elements of the home, lay a pan of an appropriate size beneath it (metal for gas water heaters). a drain tube that connects to a home drain or another suitable site must be installed in the pan (outdoors where permitted). If a leak might cause damage to the flooring, the discharge tube for the temperature and pressure relief valves must also connect to a drain. If routing is a problem, consult with your local plumbing inspector about possible solutions. Special straps should be used to secure your water heater to the wall if you reside in an earthquake-prone location (Fig. A
Available at plumbing stores and home centers). If they are necessary, your plumbing inspector will inform you of this. Ensure that the new water temperature setting does not exceed 120 degrees Fahrenheit to avoid scorching

Additional Information

Water Heater Maintenance: How to Extend the Life of Your Hot Water Heater How to Repair a Leaking Water Heater Water Heater Installation Instructions on how to replace the TPR valve on a water heater Solar Water Heater Made at Home How to Repair or Replace Water Heater Dip Tubes That Are Defective How to Flush a Water Heater (with Pictures) The Process of Purchasing a New Water Heater 7 Myths About Tankless Water Heaters That You Should Never Believe The Advantages and Disadvantages of Tankless Water Heaters

Installing a Tankless Water Heater

“On-demand” is in high demand these days, whether it’s for movies or information, or for food or amusement. It has even made its way into the field of plumbing, where tankless water heaters have grown increasingly popular since they can provide hot water whenever it is required. Learn about the advantages and disadvantages of tankless water heaters, as well as the installation concerns that come with these contemporary money-savers, before making your decision.

What Are The Pros and Cons?

Tankless water heaters, as opposed to standard water heaters, which heat water in a storage tank, give hot water “on demand,” or just when it is required. The fact that they heat water directly rather than through a tank means that they do not suffer from the same standby energy losses that are associated with storage water heaters. The hot water tap is triggered by turning on the cold water supply, which goes through a pipe into the tankless unit, where it is heated by either a gas or electric element.

Tankless water heaters, while initially more expensive than regular systems, may save a significant amount of money over the long run.

In addition to having high upfront expenditures, smaller tankless systems may not be able to provide enough hot water to all of the appliances and showers at the same time.

In addition to providing on-demand hot water and lowering long-term energy expenses, tankless water heaters conserve space and have longer warranties, which are important considerations for many homeowners.

Installation

While it is feasible to install a tankless water heater on your own, it is not a project that should be attempted by unskilled do-it-yourselfers. Tankless water heaters are available in a variety of sizes and designs, including propane, natural gas, and electric versions, as well as single-room and whole-house variants. They are also available in a variety of fuel types. Due to the fact that a typical tankless heater consumes more gas than the largest home furnaces, you will need to consult with your local gas provider to ensure that your gas main is properly sized.

Aside from that, you’ll also have to pay for someone to properly dispose of the old tank.

The new water heater may also require wiring, depending on whether you’re fortunate enough to have a power supply of appropriate size nearby.

It is possible that you may need to modify your gas lines in order to meet higher usage.

The next step is to ensure that the entire installation complies with building standards and that your homeowner’s insurance will cover any damage caused by any faults.

When you purchase your unit from a dealer, most of them will give installation at a subsidized fee.

Do you want to keep your new tankless water heater safe? 2-10 HBW provides the most complete coverage available for homeowners in the market. Allow us to assist you in getting started with a Home Warranty right away!