Tankless or Demand-Type Water Heaters
Known as demand-type water heaters or instantaneous water heaters, tankless water heaters supply hot water only when it is required. They do not generate the standby energy losses typical with storage water heaters, which can result in significant savings in energy costs. You’ll learn the fundamentals of how they function, if a tankless water heater is a good choice for your house, and what factors to consider when choosing the best model for your needs. Take a look at theEnergy Saver 101: Water Heating infographic to determine whether a tankless water heater is the best option for you, and our AskEnergySaver conversation on water heating for additional information on energy-efficient water heating.
How They Work
Tankless water heaters provide fast heating of water without the need for a storage tank. When a hot water faucet is switched on, cold water is sent through a heat exchanger in the unit, where it is heated by either a natural gas burner or an electric element, depending on the device. Consequently, tankless water heaters are able to provide a continuous supply of hot water. The need to wait for a storage tank to fill up with adequate hot water is no longer an issue. The output of a tankless water heater, on the other hand, is limited in terms of flow rate.
Tankless water heaters that run on natural gas have higher flow rates than those that run on electricity.
For example, having a shower while also running the dishwasher at the same time might cause a tankless water heater to reach its maximum capacity quickly.
You may also install separate tankless water heaters for equipment in your house that need a lot of hot water, such as a clothes washer or dishwater.
Demand water heaters are also used in the following other situations:
- Tankless water heaters provide fast heating of water without the need for a holding tank. Whenever a hot water faucet is switched on, cold water is sent through a heat exchanger within the device, where it is heated by either a natural gas burner or an electric element. Tankless water heaters, as a result, provide a continuous supply of hot water. The need to wait for a storage tank to fill with sufficient hot water is eliminated. In contrast, the output of a tankless water heater restricts the amount of water that can be heated at any given time. Tankless water heaters typically produce hot water at a rate of 2–5 gallons (7.6–15.2 liters) per minute, depending on their size. Water heaters that run on gas have higher flow rates than those that run on electricity. When it comes to large families, even the most powerful gas-fired model may not be able to provide enough hot water for many simultaneous usage. Take, for example, the simultaneous use of a shower and a dishwasher, which might cause a tankless water heater to reach its maximum capacity. Installing two or more tankless water heaters might help you solve this problem. Separate tankless water heaters can also be installed for equipment in your house that consume a lot of hot water, such as a clothes washer or a dishwashing machine. Additional water heaters, on the other hand, will be more expensive and may not be worth the extra expense. Demand water heaters can also be used in the following other situations.
Advantages and Disadvantages
Tankless water heaters provide immediate heating of water without the requirement of a holding tank. Whenever a hot water faucet is switched on, cold water is sent through a heat exchanger in the unit, and the water is heated by either a natural gas burner or an electric element. Consequently, tankless water heaters provide a continuous supply of hot water. You won’t have to wait for a hot water storage tank to fill up before using it. The output of a tankless water heater, on the other hand, has a restriction on the flow rate.
Tankless water heaters that use natural gas have higher flow rates than those that use electricity.
For example, having a shower while also running the dishwasher might cause a tankless water heater to reach its maximum capacity.
You may also install separate tankless water heaters for equipment in your house that consume a lot of hot water, such as a clothes washer or dishwater.
In contrast, adding extra water heaters will increase the price and may not be worth the additional expense. Demand water heaters can also be used in the following other situations:
Selecting a Demand Water Heater
Before purchasing a demand water heater, you should take the following factors into consideration:
- Consider the following factors as well when purchasing a demand water heater:
Installation and Maintenance
It is possible to maximize the energy efficiency of your demand water heater with proper installation and maintenance. A variety of elements influence the success of an installation. These considerations include the type of fuel used, the environment, the needs of local construction codes, and safety concerns, particularly with regard to the combustion of gas-fired water heaters. As a result, it is recommended that you use a licensed plumbing and heating professional to install your demand water heater.
- Request written cost estimates, as well as contact information for references. Check with your local Better Business Bureau to see whether the firm is legitimate. Check to see if the firm will seek a local permit if one is required and if they are familiar with local building rules.
If you’re determined to install your water heater yourself, first speak with the manufacturer about the best way to proceed. The relevant installation and instruction manuals are normally available from the manufacturer. Contact your municipality for information on acquiring a permit (if one is required) and on water heater installation codes in your area. Periodic water heater maintenance may considerably increase the life of your water heater while also reducing the amount of energy it consumes.
Improving Energy Efficiency
Consider implementing some further energy-saving measures once your demand water heater has been properly built and maintained to help reduce your water heating rates. Some energy-saving gadgets and systems are more cost-effective to install in conjunction with a water heater than they are separately.
Read This Before You Buy a Tankless Water Heater
Consider the following: The method used by the majority of houses in this nation to heat water is ridiculously inefficient. Every year, we fill up large storage tanks of 40- to 50-gallon capacity with water and then continuously pump energy into them to ensure that we have hot water available anytime we want it. But, unfortunately, this is not always the case. The wait for the tank to reheat might be lengthy if a teenager is taking a long shower or the spouse is enjoying a long soak in the tub.
Is there a chance of a leak?
Tankless Water Heater Installation: Is It Worth It?
Put it this way: Consider the following scenario: Astonishingly, the majority of American families waste water when they heat water. In order to ensure that we have hot water available whenever we need it, we fill large 40- to 50-gallon storage tanks and then continuously pump energy into them throughout the year. However, this isn’t always the case in real life. The wait for the tank to reheat might be lengthy if a teenager is taking a long shower or the spouse is enjoying a long soak in the bathtub.
Is there a chance of it bursting?
How Does a Tankless Water Heater Work?
Doug Adams created the illustration.
- It all starts with the first turn of the hot-water faucet (1). A flow sensor (2) detects the presence of water entering the heater and sends a signal to the control panel, causing the heater to begin generating hot water. During operation of a natural-gas-fueled unit, thecontrol panel (3) activates thefan (4), which pulls in outside air, opens the gas valve (5), which allows the gas to flow into the unit, and ignites the burner (6). In order to transmit heat from the flames to water passing through the exchanger’s tubing, a heat exchanger (number 7) is used. The mixing valve (8) regulates the temperature of the superheated water that exits the exchanger. Whenever the temperature sensor (9) detects water temperatures that are too high or too low for the intended setting, the panel will modify the gas valve, the mixing valve, and the flow-regulating water valve (10) in accordance with the results. Ventilation is provided by a sealedvent (11) (or a couple of vents) via a roof or exterior wall, which removes exhaust gases and supplies combustion air to the burner.
Several people were thanked for their contributions: Phillip Maxwell, Residential Product Manager, Rheem; Eric Manzano, Product Training Supervisor, Noritz; Joe Holliday, Senior Vice President, Product and Business Development, Rinnai; and Fred Molina, Water Heater Products Manager, Bosch Thermotechnology
What to Know About Tankless Water Heaters
Thanks to Noritz for the use of his photo.
How Much Does a Tankless Water Heater Cost?
Prices range from approximately $170 for modest gas-fired units to more than $2,000 for high-output heaters that can serve two showers at the same time; $1,000 is a reasonable starting point for most buyers. Electric heaters without a tank range in price from $90 to $900. The expenses of a first-time installation are higher than the price of a simple tank replacement. Electric tankless water heater installation (see item below headed “Installing an Electric Tankless Water Heater”).
How to Install a Tankless Water Heater
This is a work that should be left to the professionals, since it entails creating leak-free water, vent, and gas connections in the case of gas or propane units, or upgrading the wiring and circuit-breaker panel in the case of electric units, and it is best left to the professionals.
Tankless Water Heater Maintenance
Sign up to have a professional do an annual service that includes cleaning or replacing water and air filters, as well as inspecting the burner’s operation. The use of a vinegar flush every 500 hours in places with hard water prevents mineral accumulation, known as scale, from blocking the heat exchanger. That 20-minute task may be completed by a professional or by a homeowner.
How Long Do Tankless Water Heaters Last?
It is expected that gas-burning tankless water heaters would last 20 years or longer, which is two to three times longer than tank-type heaters. Tankless electric units have shorter life lifetimes, ranging from 7 to 10 years, compared to conventional units.
Where Can I Buy One?
They may be found at plumbing supply stores, big-box stores, and internet sellers, among other places. Alternatively, you may order one via your plumber.
Pros and Cons of Tankless Water Heaters
Thanks to Noritz for the use of his photo.
PRO: They’re Compact
As a result of new federal requirements requiring stronger insulation to decrease standby heat loss, the size of newer tank-type water heaters has increased. Consequently, they may not be able to fit into locations where an older heater with the same capacity might. Tankless gas heaters are approximately the size of a suitcase and are mounted on the wall.
PRO: They’re Safer
A tank-type heater, on the other hand, may leak and spill gallons of water if it springs a leak, but it will not house Legionella germs or topple over in an earthquake. The air supply and exhaust vents are also closed to prevent backdrafting, which would otherwise allow carbon monoxide to enter the house.
PRO: They’re Easy to Winterize
It is important to note that, unlike tank-type heaters, they will not leak large amounts of water, house Legionella germs, or topple over during an earthquake. The air supply and exhaust vents are also closed to prevent backdrafting, which would otherwise allow carbon monoxide to enter the home.
CON: They’re Sensitive to Slow Flow
These devices automatically shut off if there is too much scale accumulation in the pipes, or if the aerators in the faucets and showerheads get blocked, or if a turned-down faucet limits water flow to around 0.3 gpm.
CON: The Payback Takes Awhile
An annual savings of only around $100 for a household using a $1,000 tankless gas heater vs a $400 tank-type heater is possible, depending on how efficient the heater is and how much hot water is utilized. The savings, however, begin to accrue after six years, when many tanks are reaching the end of their useful lives due to the extended lifespan of tankless gas systems.
New Tankless Water Heater Technology
Thanks to Noritz for the use of his photo. The advancement of tankless technology is ongoing. Here are a few of the most recent enhancements:
Condensing gas heaters can extract up to 96 percent of the heat from a fuel, which is a 17 percent improvement over first-generation tankless devices. This is possible because of a second heat exchanger, which collects a large portion of the exhaust heat before it exits the vent. In addition to being around 25% more expensive than noncondensing heaters, condensing heaters produce acidic condensate that must be neutralized. If a heater doesn’t come with a built-in neutralizing cartridge, the installation will have to install one after the fact.
Instant Hot Water
Despite the fact that tankless water heaters heat water in around 15 seconds, you must still wait for the hot water to reach your shower head or faucet, just as you would with a tank-type heater. The recirculation pump should be used when the distance between the heater and the fixture is greater than 50 feet. This will conserve water and minimize the amount of time spent waiting. It is this pump that pushes the cold water in the pipes back through the heater. The pump can be activated by a timer, a push button, a motion sensor, a smart speaker, or a smartphone (see illustration above).
Tankless systems with digital connectivity let you to control the temperature as well as monitor gas and hot-water use from your mobile device. Furthermore, the device is capable of identifying the cause of a problem. Please communicate this information to your plumber so that he or she may arrive on the job site knowing exactly what has to be done. This function also eliminates the need for any guessing when it comes to determining when it is time to descale.
Tankless Water Heater Rebates: A Great Way to Save
Carl Tremblay captured this image.
What Size Tankless Water Heater Do I Need?
Here’s how the specialists ensure that your water heater produces adequate hot water: 1. A large burst of BTUs is required for a tankless heater to convert cold water into hot water in a matter of seconds. However, if a heater’s Btu output is insufficient to meet demand, it will reduce the flow rate or, in the worst scenario, offer tepid water. A plumber considers three aspects when determining whether or not a heater will be able to satisfy the demands of a household:
- The temperature of the water that enters the heater
- The maximum demand for hot water expressed in gallons per minute (gpm)
- The efficiency of the heater, as shown by its Uniform Energy Factor, which may be found in the product specifications
- The first step is as follows: A professional determines how many Btus per gallon of water heater is required to increase the incoming water temperature to 120 degrees (see the map on the next slide)
- Flow rates for all of the appliances and fixtures that may be consuming hot water at the same time are added together to form peak demand, which is calculated as follows: (These rates are detailed in the next slide.) As a result of not bathing or washing in 120-degree water, we save around 20% on our overall use. Water-saving fixtures and appliances, as well as delaying laundry while the shower is in use, can help you minimize peak consumption. In the calculation, the total Btu production is computed by inserting the Btus-per-gallon and peak-demand amounts in at different points along the way. If the difference in output is between two models, go with the one with the greater Btu rating to save money. You’ll also need two smaller units that function in tandem if your output is greater than 198,000 Btus, which is the limit for domestic gas heaters.
Btus Output Estimate
Not interested in completing the calculations? Make a rough estimate of how much heater output you’ll want using these statistics.
- The following figures are for one bathroom for one to two people: 140,000 Btus
- Two bathrooms for two to three people: 190,000 Btus
- Three bathrooms for three to five people: 380,000 Btus
Btus Per Gallon by Region
- Kitchen or bath faucets should flow at 1.5–2.2 gpm
- Tub filler faucets should flow at 4 gpm
- Dishwasher: 1–2.5 gpm
- Washing machine: 1.5–3 gpm
- Showerhead should flow at 1.25–2.5 gpm
How to Determine gpm?
To get the real gpm of a fixture, time how many seconds it takes to fill a bucket to the 1-quart mark and multiply that time by the number of gpm.
gpm is calculated by dividing 15 by the number of seconds in a minute.
Electric Tankless Water Heater Facts
Thanks to Stiebel and Eltron for their assistance. In addition to gas lines and propane tanks, tankless water heaters operated by electricity can provide the benefits of on-demand hot water to homes that do not have them. Compared to gas or propane tankless heaters, these systems, which heat water using thick copper rods, are significantly quieter and roughly a third smaller in size. And because they do not require vents, they can be fitted practically anyplace, even beneath sinks and in small closets, without compromising performance.
In locations with warm groundwater, that amount of hot water may be sufficient to feed a whole house; but, in colder climates, they are better suited to point-of-use service, where the demand for hot water does not become excessive.
Furthermore, electric heaters have a lifespan that is approximately half that of gas heaters: Warranty periods typically range from three to five years.
Tankless Water Heater Installation
Doug Adams created the illustration. What you and your plumber should look for before the installation day is as follows:
If you want your tankless heater to work effectively, you must connect it to a gas supply line that supplies enough volume at a high enough pressure to run the burner. In many circumstances, this will need increasing the diameter of the supply pipe to 3-4 inches in diameter. Furthermore, if the pressure is insufficient, the gas provider will be required to change the regulator on the meter. For your information, some tankless systems, like as ones manufactured by Rheem, are capable of working with a regular 12-inch gas line as long as it is not more than 24 feet in length.
If you want your tankless heater to work effectively, you must connect it to a gas supply line that delivers enough volume at a high enough pressure to meet your needs. In many situations, this will need increasing the diameter of the supply pipe to 3-4 inches. The gas provider will have to make adjustments to the regulator on the meter if there is insufficient pressure. Note: Some tankless systems like as those manufactured by Rheem can be used with a conventional 12-inch gas line as long as it is not more than 24 feet in length.
If you want your tankless heater to work effectively, you must connect it to a gas supply line that supplies adequate volume at a high enough pressure. In many situations, this will need increasing the diameter of the supply pipe to 34 inches.
In addition, if the pressure is not sufficient, the gas provider will be required to change the regulator on the meter. For your information, some tankless systems, like as ones manufactured by Rheem, are capable of working with a regular 12-inch gas line as long as it is not more than 24 feet.
Outdoor Tankless Water Heater
Matt Risinger captured this image. If your environment and local rules allow it, think about the advantages of hanging a heater outside in the winter.
- Saves space: You won’t have to create place for another appliance in your home as a result of this. Installation is straightforward: Because of the built-in exhaust vent, there is no need to drill a large hole (or two) through the side of the building. Service is simple: A plumber may come to your home at any time, whether or not you are there. However, take in mind the following: Regulations governing construction: If you want to install it outside, you may require approval from your local building department. Weather conditions that are cold: Even at temperatures as low as 22 degrees Fahrenheit, internal heaters keep components warm, but exposed water lines must be insulated and covered with heat tape that activates automatically in freezing conditions. Southern states are less concerned about frozen pipes than those located north of the Mason-Dixon Line.
Tankless Water Heater Venting
Carl Tremblay captured this image. Are you in need of assistance with repairs around your home? A house warranty may be of assistance. The This Old House Reviews team has put up some in-depth guidelines that you can read here:
- Carl Tremblay took this photograph. Are you in need of assistance with house repairs? Perhaps a house warranty will be beneficial. The This Old House Reviews Team has put up some in-depth instructions that you can read here:
Tankless Water Heater Pros and Cons: Should You Buy One for Your Home?
In our minds, a world in which every real estate transaction is straightforward, certain, and rewarding is what we are working toward. As a result, we strive to maintain high standards of journalistic integrity in all of our postings. When you consider that the typical water heater lasts 10 to 15 years, you might ask if investing in a tankless water heater is a good investment. This is especially true if you’re intending to relocate in the near future. According to the United States Department of Energy, a tankless water heater is more expensive than a storage water heater or a heat pump in the short term, but it is more energy efficient in the long run.
Seminole County encompasses the greater Orlando metropolitan area.
The pros: Water savings, smaller size, and constant heat
More than 27 million American houses have a water heater that is more than a decade old, which is a monument to the durability of this crucial home fixture, but it can also be a disaster when the tank breaks, leaving you to mop up all of the water that has accumulated. A tankless water heater, also known as a “demand-type water heater,” is less untidy when it fails because it connects directly to the water supply line, heating cold water as required using an electric element or gas burner rather than storing it in a tank.
Lower energy bills
According to Circle of Blue, a nonprofit organization that covers water requirements and consumption, a family of four using 150 gallons of water per person per day spent an average of $115 per month on water bills in 2019. It is estimated that the average home consumes 64 gallons of water per day, at a cost of $400 – $600 per year, according to the Department of Energy. What exactly is the volume of water in that? Typical home water use is calculated by the United States Geological Survey, which notes that a shower with a water-saving showerhead consumes around 2 gallons per minute (compared to 5 gallons per minute otherwise).
Even if you have a conservative water use pattern (for example, 40 gallons per day), a tankless water heater may be 24 percent – 34 percent more energy efficient, resulting in savings of around $80 – $100 per year.
It’s not necessary to use a standard storage water heater since it contains a reservoir of 20 – 80 gallons of hot water that’s meant to be heated continually; nevertheless, the water always cools if it’s not utilized, no matter how well it’s insulated.
This leads in a phenomenon known as standby energy loss. (Using an electric tankless water heater instead of a gas tankless water heater can save money by eliminating the need for a continuously burning pilot light.)
It is difficult to comprehend the magnitude of these sleek gray boxes for anyone who has ever lived with the cylindrical tank of a traditional water heater or a heat pump in their garage, basement, or kitchen space. In fact, according to Popular Mechanics, tankless water heaters are such a “miracle of engineering” that certain types, such as theBosch Electric Mini-Tank Water Heater Tronic 3000, which is around 14 by 14 by 11 feet, can be tucked beneath a countertop.
Immediate hot water supply
As previously stated, because they do not have a reservoir, tankless water heaters heat water immediately when a sink, shower or other device is turned on – at rates of up to 10 gallons per minute. According to Topper, who lives in a traditional water heater in her garage, she would want to have one of her own. “I have to run the water in my kitchen like crazy just to get the hot water to arrive,” she added, explaining that her typical water heater is positioned in her kitchen.
Some tankless water heaters are connected to an app, allowing you to control them as part of your “smart home” system. Using less energy while away, then turning on the appliance so that hot water is available for a bath or shower when you get home will save you money.
The use of tankless or demand-type water heaters can extend their lifespan by at least 20 years or more due to the use of easily replaced components. In comparison to the usual storage water heater, this one will last at least 5 to 10 years longer. Roger Mommaerts /FlickrviaCreative Commons Legal Code) is the source for this image (which has been resized).
The cons: Costly to purchase and install, with particular quirks
The price of your water heater may vary based on its features as well as the kind of fuel used, but in general, tankless water heaters are more expensive than traditional water heaters. To illustrate, consider the price of a Rheem 40-gallon natural gas tank water heater (which is a best-seller at Home Depot): $429. The tankless propane water heater (Rheem RTG-84DVP) from the same firm, which Popular Mechanics recommends, costs $799 and is available online. Another type that the magazine loves is the Noritz EZ 98, which can operate on either natural gas or propane and costs $1,385 (plus shipping and handling) (albeit with a 25-year warranty and WiFi capability for you to control the temperature and view your water usage).
According to HomeAdvisor.com, a professional plumber should be hired to install these appliances (at a cost of around $2,000 on average throughout the country). While the Noritz type we discussed is meant to connect to the existing incoming cold and hot water pipes, much like a standard existing water heater, alternative retrofitting options may include the installation of an exhaust vent or the rerouting of existing piping systems. In addition, there may be a price for removing the old heating system from the premises.
Cost will outweigh savings initially
Leaving aside the attractiveness of a tankless water heater as a selling point, you’re likely to require a new water heater before the energy savings of a tankless water heater outweigh the original investment.
According to a study conducted by the Minnesota Office of Energy Security, these appliances pay for themselves after around 21 to 26 years, depending on the model.
Limited output and inconsistent temperatures
Your water heater’s capacity is determined by the flow rate (in gallons per minute) of your appliances, such as your washing machine, shower, and dishwasher, as well as the capacity of your water heater. The Rinnai V65IN, for example, is capable of serving up to five separate fixtures at the same time on a single circuit. Multiple persons using water at the same time might overtax the device if it does not have a large enough capacity. This causes the heat to be patchy. By the way, the Consumer Product Safety Commission advises that the temperature of a tankless water heater be kept no higher than 120 degrees Fahrenheit.
Alternatively, you can install several single-point or “point of use” systems (costing approximately $100 to $200 each) for specific appliances that operate independently of one another.
(It’s especially useful for that bathroom sink that usually runs cold.)
Power outage reliability
Similarly, a tankless gas water heater can have a control panel that is powered by electricity, which means that if the power goes out, so does the “brain” of the water heater, which means it will not function in an emergency, according to HomeAdvisor.com and Magnificent Plumbing, a Better Business Bureau-accredited plumber who has served Contra Costa County, California, for more than a decade.
A water softener should be installed if you have hard water to assist your tankless water heater prevent calcium accumulation and continue to operate as intended. If a buildup of mineral deposits is detected in some models, such as Rinnai’s V65IN (which can service up to five separate fixtures at the same time), the unit will shut down. Photograph courtesy of (Pixabay / Pexels)
Are there any preferred tankless water heater varieties or brands?
With tankless water heaters, you may get economical as well as high-end versions in a number of pricing ranges, depending on the fuel type and features that are included. Electric variants range in price from $800 to $1,500 on average. According to HomeAdvisor.com, natural gas or propane versions cost an average of $1,000 to $1,500, but solar models cost an average of $2,000 to $6,000 per unit of energy. Some of the most well-known and highly recommended tankless brands are:
- EcoSmart, Rheem, Rinnai, Takagi, AO Smith, Bradford White, and more manufacturers
Resale potential: How do buyers perceive a tankless water heater?
It’s possible that installing a tankless water heater, if you like the energy savings and other benefits it provides — and you plan to stay in your home long enough to benefit from them — will make your home more competitive in the future, especially among buyers who are interested in energy conservation or “smart home” capabilities. “While adopting tankless will not result in a greater selling price, it will assist you in selling your home more quickly,” Topper added. She compared it to a swimming pool, which appraises for nearly the same price independent of its characteristics, but increases marketability as a result of its inclusion.
Discuss the possibility of giving a house warranty to prospective purchasers if yours is nearing the end of its anticipated life cycle and you cannot afford to replace it with another one.
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The Pros and Cons of a Tankless Water Heater
Your alarm went off at an inconvenient time. Your husband and children have gotten out of bed and are already showering. You’re the last one standing. You turn on the faucet and wait for the water to warm up before using it. And then there’s waiting. And then some more waiting. There is no hot water in the house. Your morning hasn’t gotten off to a very good start. You have just purchased a new water heater, and you are confident that there is nothing wrong with it. If only there was an unending supply of hot water available to you!
Yes, you can.
What is a Tankless Water Heater?
Using a tankless water heater, you won’t have to use the words “out of hot water” ever again. Tankless water heaters do not require the use of storage tanks, as do traditional water heaters. As an alternative, they provide hot water on demand. When you turn on your shower with a typical water heater, the water is drawn from the tank, and that water has already been heated. A tankless water heater, on the other hand, would allow your shower to draw water through it, allowing the water to be drawn directly from the source and heated swiftly as it travels through the pipes and through the heating elements on its way to your shower.
Once you’ve gone tankless, you’ll never want to go back!
Endless Supply of Hot Water
The tankless water heater is exactly what it sounds like: tankless! Because there is no tank, it does not operate on the basis of capacity; instead, it operates on the basis of demand. It never runs out of hot water because a tankless water heater warms only what you need when you need it. It also delivers hot water to your appliances swiftly and efficiently.
Energy savings are achieved by using a tankless hot water heater that only warms water when you need it. Tank water heaters keep their stored capacity of water warm at all times, whether or not you require it. It has to work really hard to keep the temperature up, which consumes a lot of energy. If you don’t require hot water all day, a tankless water heater won’t waste energy heating the water all day. When you use a tankless water heater, around 82 cents of every dollar you spend on heating your water is really spent on heating your water.
In the case of a tank water heater, only 60 cents of every dollar spent on energy is used on heating water.
Have you ever fantasized about what you might do if you had more room in your garage or house? Water heaters are typically two feet broad and five feet tall, with the width being greater than the height. Compared to conventional water heaters, tankless water heaters are just 16 inches broad, 26 inches long, and 6 inches deep. It’s significantly smaller than a tank! Goodbye, massive tank, and hello, spacious laundry room!
Longer Product Life
You’ve probably fantasized about what you might do if you had extra room in your garage or house. Water heaters are typically two feet wide and five feet tall, with the width being the most common.
Compared to conventional water heaters, tankless water heaters are just roughly 16 inches broad, 26 inches long, and 6 inches deep in comparison. Isn’t it much more compact than a tank? Goodbye, enormous tank, and welcome, brand-new laundry facility!
Peace of Mind
Tankless water heaters operate in a completely different way than tanked water heaters, and as a result, have entirely distinct components. As opposed to maintaining a significant supply of hot water in storage, the water heater only comes on when there is a need for hot water, such as when a shower or a faucet is switched on. Consequently, instead of heating the water continuously throughout the day and night, the tankless water heater is turned off until it is required. When the tankless system detects that it is in need of hot water, a burner is activated inside the system.
It is necessary to turn off the hot water in order for the system to operate in standby mode.
Here are some animated animations that demonstrate the differences between a tanked water heater and a tankless water heater.
STEP 1 – Hot water tap is turned on
Making sure hot water is flowing through your pipes is essential, and this entails turning on the hot water. The reality is that this isn’t always the case these days, either. If your faucet just has a single knob, make sure you turn it in the direction of the hot water. It’s considerably easier if you have two knobs instead of one. Find the hot water knob and turn it to the on position to allow hot water to flow through.
STEP 2 – Water enters the heater
So, now that you’ve switched on the hot water, what should you expect to happen next? When you use a traditional water heater, you would anticipate hot water to move from the tank to your faucets. With a tankless water heater, on the other hand, cold water really runs past sensors that trigger the internal computer, which then begins the heating process.
STEP 3 – Water flow sensor detects the water flow
Now that the internal computer has been activated, it quickly calculates how hot the burners must be in order to get the water up to the proper temperature for drinking. This can be accomplished through the use of a gas burner or an electrical element. In any case, it ensures a steady supply of hot water, eliminating the need to wait for a tank to refill with hot water.
STEP 4 – Computer automatically ignites the burner
As soon as the internal computer has been activated, it quickly calculates how hot the burners need to be set in order to get the water up to the proper boiling point. This can be accomplished through the use of a gas burner or an electrical component. No matter whether method is used, it ensures a steady supply of hot water without the need to wait for a tank to refuel.
STEP 5 – Water circulates through the heat exchanger
With a tankless water heater, you’ll have a limitless supply of hot water to use whenever you need it. When there is no longer a need for hot water, the tankless water heater automatically shuts down and ceases to use energy. As a result, you will benefit from energy savings as well as consistent and fresh hot water. In order to make an informed choice about whether or not to switch to a tankless water heater, it’s vital to understand how they operate. Not only do you want to understand how it works, but you also want to know what the advantages of using a tankless water heater would be.
Having a constant supply of hot water is only one of the advantages. In addition to the money benefits, many consumers choose tankless water heaters since they consume less energy than traditional tank water heaters when in operation. December 26th, 2021 All of the posts
Tankless Water Heaters (R)
It will never be necessary for you to pick between having a hot shower and doing laundry or running the dishwasher again. There is always hot water available.
Better Value Than a Tank
Because they only heat water when it is needed, Rinnai tankless water heaters may last up to twice as long as traditional tank water heaters, and they come with a two-year warranty. In addition, consumer financing and discounts are frequently offered. Determine whether you are qualified for a refund.
Save Valuable Space
Small yet formidable, the suitcase-sized wall units are designed to fit into small, discrete places, allowing you to make better use of your available living space. There will be no more holding big amounts of water that might potentially spill into your flooring. Furthermore, rather of having to replace the complete equipment, components are frequently removable.
Technology to Improve Your Lifestyle
You may establish hot water schedules or have it on demand with Rinnai recirculation technology in certain models that are Wi-Fi capable. This allows you to save time by not waiting for hot water and reduce water waste by having hot water available in seconds rather than minutes. A smart home system may be incorporated into your existing system for more control and convenience.
Reliability You Can Count On
You may establish hot water schedules or have it on demand with Rinnai recirculation technology in certain models that are Wi-Fi capable. This allows you to save time by not waiting for hot water and reduce water waste by having hot water available in seconds instead of minutes. For even better control, they may be incorporated with your smart home system.
The Rinnai PRO Network
Select models have Rinnai recirculation technology and are Wi-Fi capable, allowing you to establish hot water schedules or have hot water available on demand. This saves you time by providing hot water in seconds rather than minutes, while also decreasing water waste. For even better control, they may be combined with your smart home technologies.
Are Tankless Water Heaters Worth It? 10 Pros and Cons
Tankless water heaters are one of the more recent techniques available for making a home more energy efficient. Tankless heaters, as opposed to normal units, which continually heat and reheat water to ensure that it is always hot, create water that is heated quickly using high-powered gas burners or electric coils to heat the water. In order to achieve this immediate heating, more electricity is required; but, because the water does not have to be heated repeatedly, as in a traditional “tank” type, tankless systems consume less energy in total.
- Is there a catch to this?
- When the circumstances are favorable, a tankless water heater is the most cost-effective solution.
- Before we get into the advantages and disadvantages of tankless water heaters, if you’ve already decided that you’re going to get a new water heater (with or without a tank), have you considered how you’re going to pay for the purchase?
- By clicking on the button below, you will get accepted within 30 minutes (with no credit check)!
Get Pre-Approval for Financing for Your New Water Heater Today! Now, we’ll go over some of the advantages and disadvantages of tankless water heaters, so you can determine if a tankless water heater or a regular water heater is the better option for you.
Pro1: Instant Hot Water
Using tankless water heaters is one of the more recent innovations in the quest for a more energy-efficient household environment. Tankless heaters, as opposed to typical units, which continually heat and reheat water to ensure that it is always hot, create water that is heated quickly using high-powered gas burners or electric coils to heat water instantly. In order to achieve this immediate heating, more electricity is required; but, because the water does not have to be heated repeatedly, as in a traditional “tank” type, tankless systems consume less energy in aggregate.
- If so, what is it?
- A tankless water heater is the greatest alternative when the circumstances are correct.
- Befor we get into the advantages and disadvantages of tankless water heaters, if you’ve already decided that you’ll be purchasing a new water heater (with or without a tank), have you considered how you’ll be financing your purchase?
- Get accepted in 30 minutes or less (with no credit check) by clicking on the button below.
- In this section, we’ll go over some of the advantages and disadvantages of tankless water heaters so that you can determine whether a tankless water heater or a regular water heater is the better option for you.
Con1: Inconsistent Temperatures
In the Consumer Reports poll noted above, one of the most common consumer concerns was that the water temperature was constantly fluctuating. Most of the time, this problem arises as a consequence of the heater’s failure to deliver adequate hot water to several outlets at the same time. Tankless heaters, on the other hand, do not always turn on if the faucet is only slightly open (when shaving or rinsing a toothbrush, for example).
Pro2: Longer Lifespan
The fact that tankless units have a longer lifespan is a significant advantage. A normal, high-quality water heater will last around a decade, but tankless water heaters may operate for up to twice that amount of time. Choosing a tankless type that will last longer can prevent a homeowner from having to replace their tank every ten years or so.
Con2: Higher Initial Cost
Tankless units are intrinsically more costly because of their greater life expectancy. The average conventional model costs roughly $500, and the lowest tankless choices start at $1,000 for the most basic configuration. These specialty models are also more expensive, and they need more time to install, thus labor costs must be considered into the entire cost of the product or service.
Pro3: Lower Month-to-Month Costs
Despite the fact that these systems are more costly, they are also more productive.
In fact, according to Consumer Reports, tankless water heaters are 22 percent more energy efficient than regular kinds of water heater. Homeowners should expect to save hundreds of dollars yearly, despite the fact that the monthly savings may be little.
Con3: Limited Hot Water Supply
Despite the fact that tankless water heaters provide a constant stream of hot water, the supply is not limitless. Ordinary versions can heat many liters of water at the same time, making them ideal for a single person having a shower or doing the dishes. While one person is running the dishwasher or washing machine, another person is having a shower (or two people are taking showers in two separate bathrooms at the same time), a tankless heater will be unable to keep up with the demand. A typical water heater, which can hold between 30 and 80 gallons of water depending on the type, will have no trouble supplying hot water to many outlets at the same time without breaking a sweat.
Pro4: Space Savings
Tankless water heaters are significantly lower in size than traditional storage ones. Installers often attach them on a wall in an unobtrusive location in the basement, according to the manufacturer. The reduction in floor area is especially beneficial in smaller residences.
Con4: Additional Equipment is Often Necessary
In most cases, a water softener is required to guarantee that a tankless heater performs effectively. Obviously, the additional equipment increases the cost of the device at the time of purchase. Because the softener (as well as the requisite bags of salt) will take up valuable space next to the wall-mounted heater, the softener will offset the space-saving benefit. In fact, it is possible that this equipment will take up more room than a standard hot water heater.
Pro5: Special Financing and Tax Breaks
Tankless heaters are eligible for federal tax credits since they are more energy efficient, which helps to offset the high installation costs associated with these systems. The federal government provided a 10 percent tax credit on the total cost of purchasing and installing a tankless hot water heater as of December 2016. Traditional storage heaters that have earned the Energy Star certification are likewise eligible for the same 10 percent tax credit.
Con5: Rerouting Gas Lines
As previously said, tankless water heaters require a non-traditional installation, which increases the cost of the unit’s installation. Even worse, a contractor may be obliged to redistrict a gas line or install new vents, which would raise the entire cost of the renovation.
Pro6: Tankless Water Heaters Eliminate “Standby Loss”
When it comes to tankless heaters, the most significant selling feature is that they remove “standby loss.” Traditional water heaters reheat water repeatedly, increasing energy expenses with each reheating operation. Even if no one is at home, the water heater is still consuming energy since it is continuously heating up the water in its tank to a safe temperature.
Con6: Could Take Years to Make Up for the Higher Price Tag
While tankless water heaters are less expensive on a month-to-month basis, it might take years for the savings to offset the hefty initial investment. Consumer Reports estimates that switching to a tankless water heater can save a homeowner up to $75 per year in energy savings over the long haul. As a result, it might take anywhere from 6 to 12 years (or more) until the month-to-month savings exceed the price of installation.
Pro7: Never Run Out of Hot Water
Storage tanks will ultimately run out of hot water in homes with high hot water consumption (for example, if three or four people take showers in a row while the dishwasher is running).
Using a tankless heater guarantees that everyone has an equally warm shower – as long as the showers are taken consecutively, rather than all at the same time – since it does not rely on stored water to supply the necessary water.
Con7: Changing Water Usage Habits Could Save as Much Money as Going Tankless
Storage tanks will ultimately run out of hot water in homes that use a lot of hot water daily (for example, if three or four people take showers in a row while the dishwasher is running). Because it does not rely on stored water to satisfy demand, a tankless heater ensures that everyone receives an equally warm shower – as long as the showers are taken consecutively rather than at the same time.
Pro8: Both Electric and Gas Models are Available
Typically, natural gas is used to power tankless water heaters, although electric ones are also available on the market. Depending on the electrical infrastructure of a property, a non-gas unit may be a viable alternative to rerouting gas lines or making other costly and time-consuming modifications.
Con8: Other Options Like Solar Heating are Available
Tankless water heaters are not the only energy-efficient alternative available; solar water heating is becoming increasingly popular around the country. Solar water heaters, which are equipped with solar collectors and storage tanks, avoid the need to reroute gas lines or install new electrical fixtures in the home. Solar water heaters may be utilized in any environment and can even help you recoup your installation expenses more quickly because they do not rely on gas or electricity and instead rely on the power of the sun to heat the water.
Pro9: Tankless Heaters Offer Longer Warranties
Tankless heaters are covered by extended warranties as a result of their long service life. As a result, in the event that something goes wrong, the homeowner will not be responsible for any repairs or replacement costs. Warranties for tankless heaters can last up to 20 years, which is the normal lifespan of a heater of this type.
Con9: Additional Maintenance is Possible
In order to keep the guarantee valid, owners must execute yearly maintenance and, in certain cases, use a water softener. Aside from that, homeowners should flush out their system once a year to avoid mineral build-up in the heater or the water line. The expense of doing these chores may outweigh some of the savings realized as a result of the tankless heater’s decreased energy demand.
Pro10: Ideal for Smaller Homes With Minimal Hot Water Requirements
If you live in a smaller house with a low need for hot water, a tankless water heater is the best option for you. It is possible to minimize standby loss with these efficient units, and they will offer enough rapid hot water for one to three persons to shower, wash their clothes, and clean dishes at the same time.
Con10: Standard Energy Star Water Heaters are Also Efficient
Traditional storage water heaters that are Energy Star certified are now available on the market. Not only do these apartments provide monthly savings in exchange for a smaller initial investment, but they also qualify for tax deductions. Additionally, because virtually all homes are already built to support these classic water heaters, homeowners will not have to make any substantial alterations to their gas lines or electrical wiring to use them.
A Final Consideration
Tankless water heaters are frequently eligible for PACE financing through Ygrene. Using their local PACE program, homeowners may finance the purchase and installation of a tankless water heater with no money down and no monthly payments. The homeowner then pays for the improvement over a period of time (as a line item on their annual property tax bill). Water heaters that are more traditional in nature may also be eligible for PACE financing in some instances, so it is important to weigh the benefits and drawbacks of each choice before deciding on the kind of water heater for your house.
Approval for financing your new water heater can be obtained.
For further information, please contact Ygrene at (855) 901 3999 or firstname.lastname@example.org.
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Tankless Water Heaters: A Buyer’s Guide
Water heaters that do not require a tank are frequently eligible for PACE financing through Ygrene. Homeowners may take advantage of their local PACE program to fund the purchase and installation of a tankless water heater with no down payment. Later, homeowners will be required to make payments to cover the cost of the renovation (as a line item on their annual property tax bill). It is advisable to weigh the advantages and disadvantages of each choice before deciding on the kind of water heater for your house.
- Please fill out the form below to be approved for financing within 30 minutes (or less!) if you’re ready to have a tankless water heater or a regular water heater installed in your house.
- Now You may fund a wide range of energy efficiency, storm-preparedness, renewable-energy, and water conservation improvements with the aid of PACE financing.
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What is a Tankless Water Heater
Because they heat the water immediately, tankless water heaters take up far less space than storage water heaters. As soon as you switch on the hot water, cold water is sent down a pipe and into the tankless water heater unit, where it is heated by either a gas burner or an electric element. This ensures that you have a continuous supply of hot water. On average, tankless water heaters can produce 2 to 5 gallons of hot water every minute, according to the manufacturer. According to energy.gov, gas-fired tankless water heaters are capable of producing greater flow rates than electric counterparts.
Having adequate hot water accessible for showers, washing, and the dishwasher will guarantee that there is always enough to go around.
Tankless Water Heater Advantages
Compared to traditional tank-style water heaters, tankless water heaters (also known as “on demand” units or instant hot water heaters) consume 30 to 50 percent less energy, resulting in annual savings of $100 or more for a normal family, depending on water usage.
- Compared to traditional tank-style water heaters, tankless water heaters (also known as “on demand” units or instant hot water heaters) consume 30 to 50% less energy, resulting in annual savings of $100 or more for a normal family, depending on their water consumption.
This EcoSmart ECO 27 Electric Tankless Water Heater is available on Amazon right now.
Tankless Water Heater Disadvantages
- The most significant downside of on-demand or instantaneous hot water heaters is their high initial cost. The smaller units that are frequently seen will not be able to provide enough hot water to meet the needs of most families. They can only handle one faucet at a time, which is an issue if you want to take a shower while the dishwasher is in the dishwasher. It is possible to purchase larger apartments that can accommodate the needs of an entire family, but they are more expensive. Tankless units, on the other hand, feature high-powered burners, which necessitates the usage of proper ventilation (a dedicated, sealed vent system, which requiresprofessional installation). Natural gas burners sometimes necessitate the use of bigger diameter gas pipes, which increases the cost of installation.
This Rheem RTEX-13 240V Heating Chamber Residential Tankless Water Heater is currently available for purchase on Amazon.
Electric vs Gas Tankless Water Heaters
One of the most significant distinctions between electric tankless water heaters and gas tankless water heaters is their energy-efficient design. Electric tankless water heaters normally have an efficiency of 98 percent or above, but gas tankless water heaters often have an efficiency of 80-85 percent or less. A gas tankless water heater can be less expensive to operate and will likely last longer than an electric tankless water heater. Tankless water heaters will free up valuable floor space that would otherwise be taken up by a large, cumbersome water heater.
A complete home electric tankless water heater may consume more than 25,000 watts of power, whereas a traditional water heater consumes just 5,000 watts of electricity.
Gas Tankless Water Heaters
Natural gas tankless water heaters have a longer life span than traditional water heaters, and they are also safer to use than traditional water heaters. One downside of a tankless water heater is that it can automatically shut off if there is a buildup of scale in the tank.
The Bottom Line: Pricing and Installation
When you’re putting together a quote for a unit, make sure to include installation fees in the estimate or firm offer. You cannot do this assignment on your own unless you have professional-level expertise. Many home shops and plumbing specialist businesses have the greatest tankless water heaters on the market. This WiseWater tankless hot water heater is currently available for purchase on Amazon.
Figure A: Tankless Water Heater Details
When a hot water faucet is turned on, the heating components are activated. As water passes through the heat exchanger, it is heated to a certain temperature. Mr. Fix-It-Up-For-The-Family
Is a tankless water heater for you? Learn about them in this video:
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