Best Tankless Water Heater Reviews 2020

A tankless water heater provides a never-ending supply of hot water because it instantly heats water that passes through the unit.

The idea of having an unlimited supply of hot water is very tempting for homeowners. Who hasn’t wanted to have a nice, long hot shower only to discover that there was no longer any hot water?

If you’ve got a large household and you’re using a 40-gallon tank-based system, that hot water for a shower might disappear in as little as 15 minutes. Even if you take a 5-minute shower, that means only 3 people in your home are getting a hot shower. Then you’ve got to wait for the system to recover to take care of other hot water needs, like laundry and dishes.

If your current system could use an upgrade or your current tank-based model isn’t keeping up, then the best tankless water heater models could be right for you.

Let’s find out more.

Best Seller
Best Value
Medium-Demand
High-Demand
Stiebel Eltron 224199 240V, 1 Phase, 50/60 Hz, 24 kW Tempra 24 Plus Whole House Tankless Electric Water Heater, Advanced Flow Control
EcoSmart ECO 27 Electric Tankless Water Heater, 27 KW at 240 Volts, 112.5 Amps with Patented Self Modulating Technology,White
Rinnai RL Series HE+ Tankless Hot Water Heater: Indoor Installation
Rheem RTGH-95DVLN 9.5 GPM Indoor Direct Vent Tankless Natural Gas Water Heater
Our Rating: 4.6 / 5.0
Our Rating: 4.0 / 5.0
Our Rating: 4.2 / 5.0
Our Rating: 4.1 / 5.0
Market Popularity:  High
Market Popularity: High
Market Popularity:  Medium
Market Popularity:  Medium
Best Seller
Stiebel Eltron 224199 240V, 1 Phase, 50/60 Hz, 24 kW Tempra 24 Plus Whole House Tankless Electric Water Heater, Advanced Flow Control
Our Rating: 4.6 / 5.0
Market Popularity:  High
Best Value
EcoSmart ECO 27 Electric Tankless Water Heater, 27 KW at 240 Volts, 112.5 Amps with Patented Self Modulating Technology,White
Our Rating: 4.0 / 5.0
Market Popularity: High
Medium-Demand
Rinnai RL Series HE+ Tankless Hot Water Heater: Indoor Installation
Our Rating: 4.2 / 5.0
Market Popularity:  Medium
High-Demand
Rheem RTGH-95DVLN 9.5 GPM Indoor Direct Vent Tankless Natural Gas Water Heater
Our Rating: 4.1 / 5.0
Market Popularity:  Medium

Tankless Water Heater Reviews

  • The Stiebel-EltronTemura 24 Plus is best used for households that are 3-4 people in size, live in cold-to-moderate climates, and do not require simultaneous hot water use.
  • The EcoSmart is the best value option because of its overall versatility. Even in cold, northerly climates, this tankless system offers 2.7 GPM of hot water support.
  • The Rinnai RL75iN is an excellent medium-demand option for families that need consistent hot water without big simultaneous demands.
  • The Rheem RTGH-95DVLN is perfect for high-demand households that have a natural gas connection. It is 94% energy efficient and supplies up to 9.5 GPM.

Review of the Best Selling Tankless Water Heater

Tempura offers consumers a 5 GPM solution that is incredibly easy to install.

Stiebel Eltron Tempra Plus
677 Our Rating
Stiebel Eltron Tempra Plus
  • Digital temperature control. Voltage : 240 Volt or 208 Volt
  • Proven reliability
  • No venting required

The Tempura 24 Plus is a fantastic tankless water heater option for almost everyone in North America. At its maximum performance, it can create a temperature change of up to 92 degrees Fahrenheit. That means even homes where the average groundwater temperature is 42F can still receive a healthy GPM and hot water experience.

For the coldest regions, the maximum GPM households will receive is around 2.6 GPM. That is based on the desired water temperature of 115F and an average groundwater temperature of 42F.

In warmer regions, where groundwater temperatures average 72F, the Tempura 24 by Stiebel-Eltron operates at 5 GPM. It offers a water output range that can reach 140F, with a minimum 86F setting.

This model does not require venting.

This water heater can be installed almost anywhere. The design works well for virtually any installation point, thanks to its compact, wider frame when compared to similar systems. Users have access to digital temperature controls for a custom experience every time.

Several features are included with this tankless system to further customize the experience for homeowners in all geographic regions.

  • Energy use is reduced with this system, thanks to auto-modulation
  • Advanced flow controls help the system be able to maintain a consistent temperature
  • Solid copper heating chambers create consistency within the system

With the advanced flow control feature, the system will monitor simultaneous water use throughout the home.

If GPM levels exceed demand, then the system will reduce flow across the board in slight amounts. This feature prevents water temperatures from running cold, unlike other systems from competitive brands.

This system requires a 2 x 50-Amp DP breaker to properly operate

The minimum required wire size and number of runs for this model is 2 x 6/2 AWG. The minimum recommended household electric service to operate this unit is 150-amps. For older homes or homes in communities with outdated electrical infrastructures, there may not be enough amperage to fully support the unit.

The warranty with this product is 3 years for parts and 7 years against leakage.

We got the opportunity to view an installed unit and were quite impressed with the performance it provided. We tested the unit by drawing a bath while running the dishwasher simultaneously.

The total output for the two exceeded the capacity of the unit by over 1 GPM. As promised, the water heater adjusted to the higher demand without compromising the temperature of the water.

It did extend the amount of time that was required to draw a full bath. There were no functionality or pressure issues within the dishwasher. The dishes were cleaned, as expected.

If you’re looking for a model that is easy to install and offers a proven value, then give the Tempura 24 a closer look. There’s a good chance that it will be able to meet the needs you have in your home.

Review of the Best Value Model

The EcoSmart ECO 27 is affordable for every home, in every climate.

Sale
EcoSmart ECO 27
2,035 Our Rating
EcoSmart ECO 27
  • Savings of up to 50% on water heating costs. Dimensions :17H x 17W x 3.625D inches ;Pipes...
  • Digital temperature control in 1-degree increments allows control of hot water; Activation...
  • Copper and stainless components designed for efficiency, durability and easy replacement.

One of the knocks that tankless water heaters receive is their lack of flexibility in cold-

One of the knocks that tankless water heaters receive is their lack of flexibility in cold-weather climates. Because the groundwater temperatures are colder, it takes the unit longer to produce hot water.

For entry-level units, often priced at $400 or more, homeowners would receive less than 2 GPM of hot water support.

The ECO 27 is a different option altogether. It is priced better than some entry-level models, producing better than some premium tankless systems that are on the market today. In warmer climates, homeowners can receive up to 6.6 GPM of hot water support.

In geographic locations where groundwater temperatures average 40F throughout the year, this EcoSmart system provides users with up to 2.7 GPM of hot water. It is configured to work with homes that have average groundwater temperatures as low as 37F.

This model also offers self-modulating technology.

EcoSmart has also incorporated modulation into the ECO 27. If water use levels exceed the maximum capacity of the unit, then water pressure levels are adjusted to maintain output temperatures. It is the largest electric tankless system on the market today that offers this feature at the time of this review.

At the same time, EcoSmart includes a lifetime warranty on the electronics, exchanger, and element with this tankless system. The warranty doesn’t include labor costs, however, so that may need to be taken into account by some users.

For further convenience, a remote control is available, though sold separately, which allows homeowners to control the flow temperature from anywhere in the home.

Power consumption requirements may exclude some homeowners.

Although this water heater offers the best value on the market today, it does require three 40-amp double-pole breakers to operate. The overall power consumption from this unit is relatively low, especially when compared to tank-based systems. It has higher start-up demands, which is why the triple setup is required.

We did notice a correlation between improper installations and a tendency for the unit to turn off unexpectedly. The water heater will operate at a reduced capacity if you don’t connect the three 40-amp double pole breakers. It will also increase the risks of the control card, deciding to turn off.

It won’t trip the breakers if this occurs. It will simply stop working. You may also find that you must cycle your breakers from time to time with an incomplete installation to keep it operating.

For the price, you can’t beat the features and output that the ECO 27 is able to provide. No matter where you happen to live or what your budget might be, you’ll want to take a look at the many strengths this product offers.

Review for the Best Medium-Demand Model

Rinnai helps families avoid schedule conflicts with consistent hot water access.

Rinnai RL75iN
365 Our Rating
Rinnai RL75iN
  • Endless hot water for your entire home
  • RL75iN HE+ High Efficiency Tankless Hot Water Heater - Natural Gas: Indoor Installation Only
  • Up to 7.5 GPM hot water flow rate (varies by groundwater temp)

The average home has 3-4 people living in 2-3 bedrooms. Maybe there’s a couple of bathrooms in there. If you’ve got a light-demand tankless heater, that’s too much for it to handle.

You’d save money by going with a lightweight GPM rating. You would also force yourself into a specific schedule to allow each person the hot water access they may need.

At the same time, you don’t need a high-demand tankless system when you meet the definition of “average.”

The Rinnai RL75iN fills the gap nicely. Providing up to 7.5 GPM of hot water support, this gas-powered system is compact, mounts in almost any room, and can be directly vented with a roof or single-wall penetration.

The 7.5 GPM rating is based on geographic location and a 120F setting.

Under certain conditions, some households may receive over 9 GPM of hot water support.

We did find it necessary to pay very close attention to the installation specifications with this particular tankless system. It requires a 3/4-inch gas pipe.

You will need to check with your local utility and jurisdiction for building codes. Some homeowners may find themselves excluded from this installation because of this requirement.

Once installed to specs, this Rinnai unit performs as expected. There can be some delays in hot water at the furthest faucets in the home.

For the most part, however, the user experience with this unit is what you’d receive from any other water heater that doesn’t use a recirculation pump as part of its standard insulation.

Check the load on your gas supply lines before ordering as well if you are replacing a gas tank-style water heater.

Tank-style water heaters often operate at 40,000 BTUs per hour. This unit requires 180,000 BTUs per hour. If you don’t have the proper gas supply available, then the unit will not perform as it should.

There are some maintenance needs with this unit, though not outside of the ordinary. Flushing the system is pretty simple and comparable to any other system.

The biggest risk of a breakdown is within the modulation feature, which controls the gas and water flow to the tankless system.

The operation of the unit is very quiet. The water temperature it provides is very consistent.

There is an issue with the burners in this Rinnai unit where they are very sensitive to debris. If the unit senses anything with the burners, then it will flash an error code at you that remains until you clean the burners. Under regular operating conditions, expect to clean the burners 3-4 times per year.

For medium-use homes that want consistent hot water access, we feel that there isn’t a better option on the market today than the Rinnai RL75iN. It may offer some owners a few challenges, though we feel the positives here far outweigh any negatives that might be experienced.

Review of the Best High-Demand System

Rheem offers homeowners up to 9.5 GPM of hot water for large families and households.

Sale
Rheem RTGH-95DVLN
135 Our Rating
Rheem RTGH-95DVLN
  • 94-Percent Energy efficient with stainless-steel condensing heat exchanger
  • Intelligent electronic controls designed to increase energy efficiency and safety
  • Third party efficiency listed by AHRI

If you have high-capacity hot water needs in your home, then a gas tankless water heater is one of the few options available that can meet your needs. Under certain geographic conditions, this unit can provide up to 9.5 GPM of hot water. That is one of the best rates available in the industry today for residential installations.

That isn’t the only benefit you’ll find with this Rheem unit. It has several performance features that help to enhance the user experience – from our perspective, anyway.

  • It offers a water-saving setting that further reduces water waste in the home. When activated, up to 1,100 gallons of water can be saved each year with this feature.
  • Low-flow activation is available with this tankless system, as well. With hot water available at .40 GPM, low-demand circumstances still receive the right water temperature.
  • This system works with a recirculation pump, making it possible for hot water to be instantly available at the faucet. When installed properly, some homes may save more than 12,000 gallons of water per year.
  • There is a hot-start feature that minimizes cold water bursts from the unit as well.

Rheem offers a 5-year warranty program for this system, which includes commercial installations, on parts. Labor is included for the first 12 months of the warranty.

Residential installations have a 12-year warranty on the heat exchanger, while commercial installations have a 5-year warranty on the exchanger.

Follow all installation instructions with this Rheem unit to the letter.

If the installation is not followed properly, including the installation of the vent, then the warranty could be voided.

Once installed, there are quite a few nice additions to this water heater that makes life better. It offers a built-in condensate neutralizer, which reduces the issues with dampness that some water heaters in this category can cause.

It offers a high-altitude capability as well. Elevations of up to 8,400 feet above sea level are supported by this tankless system.

Homeowners can vent up to 150 feet when using 3-inch PVC or 60 feet using 2-inch PVC.

One of the nicest options, however, is the self-diagnostic system. It will notify you after 500 hours of use to call for an optional service check to ensure it is operating properly. A digital remote control and 10-feet of thermostat wire are included as well.

We found this gas tankless water heater to be fully capable of meeting the needs of virtually any household.

If you have a large home, bigger than 3,500 square feet, or a large family that uses a lot of hot water simultaneously, then this is the water heater you’re going to want to purchase today.

Buyer’s Guide for Tankless Water Heaters

Although tankless water heaters are just starting to become popular in the United States, this isn’t a new technology. The first electric tankless water heater was invented in 1929 by Stiebel-Eltron.

The problem with tankless water heaters has always been related to the efficiency of the unit. It takes time to turn cold water into hot water. Until the 1990s, when water use wasn’t a concern for most communities, tankless systems could not keep up with the amount of water being used.

Older faucets used to operate at 5-7 gallons per minute (GPM). Showers operated at the same level. Even today, industrial-strength tankless systems typically support 10 gallons of hot water per minute or less.

Thanks to technology improvements in water pressure and water flow, most faucets operate at 2 GPM or less (source). Showerheads operate at 2 GPM or less as well (source). That means a tankless system with 6 GPM of hot water support can theoretically support 3 simultaneous showers with an endless supply of hot water.

In the past decade, innovations within the tankless industry have helped to push down costs per unit as well. The cost of a new tankless system, either gas or electric, is comparable to the cost of a brand-new tank-based water heating system.

Yet a tankless water heater may not be the right choice for some homes. Here are some of the important key points to consider.

Gas vs. Electric

Electric water heaters are the easiest to install. They can save water, save energy, and can be placed virtually anywhere.

Gas water heaters are much more difficult (and costly) to install. In return for the investment, however, you receive higher GPM ratings and better efficiencies in your hot water system.

Tank vs. Tankless

The conventional tank-based system stores water that is constantly heated. Tankless systems will take cold water, heat it with an element or gas burner, providing on-demand hot water.

Hot water tanks can be stored in garages, closets, or a basement. Top models today can store up to 80 gallons of hot water and may have a first-hour rating (FHR) of 100 gallons or more.

Tankless systems can be wall-mounted. Although they require venting, they also free up a lot of floor space. They’ll also reduce energy consumption, for households that use 41 gallons of hot water, or fewer, by at least 20% in almost every circumstance.

GPM Flow Rates

In the average home, a dishwasher, a shower, and a washing machine would use 7.5 gallons per minute of hot water if operating simultaneously.

That means you’d need to purchase a premium model to meet that demand. After all, entry-level models provide 2 GPM of support.

You can reduce your simultaneous GPM needs by staggering your hot water usage. If you’re on a budget, purchase a unit that can meet the peak demand needs of your largest appliance.

A dishwasher requires 2.5 GPM of hot water. Washing machines can use 3 GPM. Older kitchen faucets may require an upgrade since they can use 7 GPM.

In the average home, a dishwasher, a shower, and a washing machine would use 7.5 gallons per minute of hot water if operating simultaneously.

That means you’d need to purchase a premium model to meet that demand. After all, entry-level models provide 2 GPM of support.

You can reduce your simultaneous GPM needs by staggering your hot water usage. If you’re on a budget, purchase a unit that can meet the peak demand needs of your largest appliance.

A dishwasher requires 2.5 GPM of hot water. Washing machines can use 3 GPM. Older kitchen faucets may require an upgrade since they can use 7 GPM.

Add another 0.5 GPM for each sink in simultaneous use. Then add all your peak demand needs together to reach a target GPM for your tankless system.

Climate Impact

Tankless systems struggle to operate when ground temperature averages are quite cold. You must think about what the actual temperature change will be to determine the strength of the system you require.

Some geographic regions in the United States have an average ground temperature that is as low as 35F. That is a 12-month average. If you want 120F hot water, you would be required to purchase a tankless system with a maximum heating capacity of 85 degrees.

Most systems do not have the capability of making that happen.

Most tankless systems work best under conditions where a 60-degree or less water temperature change is required.

Installation Costs

Installing a brand-new tankless system can be an expensive proposition for some households. Gas-powered systems can be especially problematic because of their venting requirements.

You cannot stack vent a gas tankless unit with a furnace or other appliance.

According to Home Advisor, the average cost to install a new tankless system in the U.S. is $1,783. Costs may be as high as $2,740. That is because there are venting requirements that must be fulfilled for some systems. Gas lines may need to be added. Water lines may need to be shifted or changed.

As a general rule of thumb, it is a good idea to consider a tankless system if you have a new construction project, or you are replacing a current system if gas is your fuel source.

If you’re replacing a gas water heater tank, it is cheaper for most homes to purchase one of the best gas water heaters instead.

Location of the Installation

Some people may also be wondering where they should install a tankless water heater in their home. While it might not seem like a major consideration to keep in mind, it definitely will prove to be. The location you choose for installation will ultimately also determine how it functions.

You want to be sure that it is put where you will have easy access to it. This is in the case of any adjustments or maintenance that is needed or any repairs that the water heater requires.

If you already had a tankless water heater in the home and you are installing its replacement, then that same location is probably going to be just as ideal as it was for the last model. The plumbing is also already done, so that’s always a bonus too.

You should also be sure to read the instruction and owner’s manual for your new tankless water heater to see if there are any special requirements or recommendations when it comes to installing the unit.

Once you find the space, pay close attention to the electrical outlets, shared plumbing lines, and other areas close by that could ultimately cause complications or disaster like fire or flooding.

Tips for Tankless Water Heaters

What better advice than getting it from people who already own and use tankless water heaters? They recommend understanding your power needs that your new system will require. Sometimes you may require additional room on the electrical panel and that is definitely something you will want to know ahead of the installation process.

Tankless water heater owners also want to remind people that it may be a few years before they can begin seeing the savings and energy efficiency that this kind of water heater affords. So, they suggest not looking at the tankless water heater as an investment but more of a convenience.

The Pros and Cons

Finally, we have some pros and cons for you to consider before you make your purchase.

Pros

You will have hot water on demand. This is especially good for families that have four or more people in the household.

Endless hot water. Hot water on demand is nice as we have already touched on, but there is also something to be said about an endless supply of hot water that is immediately available. You won’t have to worry about running out of hot water during another shower again.

They last a long time. Regular, standard tank hot water heaters were designed to last upwards of 18 years with proper care and maintenance. Tankless hot water heaters, on the other hand, are said to last twice that long. All you have to do is make sure to keep up with all the maintenance that is required.

Ideal for small spaces. If you don’t have much room to work with in your home, then this kind of water heater can save you some space.

Environmentally conscious. You will find that most tankless water heater models have a 95% plus energy rating and don’t emit any greenhouse gases.

Add value to the home. Finally, adding this premium feature to your home lends to its overall value. It is a great selling point down the road if you decide it is time to move and you want to strive for top dollar for your home.

Cons

It is a luxury. Energy star certified appliances are good, but you won’t see the savings on your energy bills for years which makes a tankless water heater seem more like a convenience and luxury item rather than an energy saving investment.

Higher costs. With this kind of system, you will also find that the costs may be much higher than standard water heaters. If you have hard water, you will need to have a water softener installed to avoid wearing out and damaging your tankless water heater. Some homes may also need additional plumbing for it as well.

Varying levels of hot water. Depending on how many people are using the hot water, there may be small variances and fluctuations in the hot water supply. If more than one person is taking a hot shower and laundry or the dishwasher are also being run at the same time, then that may also have a significant impact on the consistency of the hot water.

Top Reputable Tankless Water Heater Brands

There are several manufacturers that produce outstanding tankless water heaters. The only problem is that some brands build high-quality, premium units that may be outside of the average household budget.

Other brands build excellent mid-range units, while others provide entry-level items that are designed more to support an existing tank-based system.

Here are the best tankless water heater manufacturers and what to expect from them.

1. EcoSmart

This brand is a continual favorite for online shoppers. It offers a variety of affordably priced tankless water heaters that offer between 2-5 gallons of water support per minute. Their models are about 50% lower in price than comparable brands, and there are several options from which to choose.

EcoSmart tankless systems are ETL Certified to UL 499. Local product support is available through many major retailers, including Amazon, The Home Depot, and Ace Hardware Stores.

2. Rheem

This brand was founded in 1925 as a family company. The Rheem brothers, Donald and Richard, began by building steel shipping containers and home appliances. They have built everything from musical instruments to semiconductors. Today, this brand is the largest manufacturer of water heating products in North America.

EcoSmart is within the family of brands that fall under the Rheem name. Other brands include Eemax, Richmond, Ruud, and HTPG.

3. Rinnai

Rinnai has provided nearly 100 years of innovation in U.S. manufacturing. There are one of the only tankless water heater manufacturers that uses its own state-of-the-art testing laboratory in Canada, employing more than 600 accredited lab technicians, research engineers, and development engineers. All products meet or exceed CSA ad ANSI standards.

The brand is headquartered in Japan, with 20 subsidiaries and 85+ sales offices in 13 countries to provide a complete level of customer support, from purchase to installation. That level of support has led this brand to become the world’s leader in providing tankless water heater systems to homes.

4. Takagi

What makes this tankless hot water system manufacturer unique is that it is only sold by licensed contractors. That means there are trained professionals assigned to your region to help you with your new system.

That also means one must be careful when purchasing a system from this brand online. Purchases from non-licensed entities may not be covered under the published warranty.

Takagi also provides an extensive series of online help options for owners, from plumbing diagrams to troubleshooting guides. There is also a complete set of instructions for professionals licensed by this brand to sell and install tankless systems.

  1. Noritz

This brand may be one of the newcomers to the hot water system industry, though they still have more than 60 years of manufacturing experience. Noritz offers a total of three different systems to provide homes with hot water through a customized approach.

Their systems have more flexibility than other systems, including outdoor or indoor placement, without compromising the quality of the manufacturing process.

Noritz is also one of the few brands that own every aspect of the manufacturing process. Every unit comes with a 12-year, non-prorated warranty.

6. Navien

Navien was founded in 2006 to focus on the condensing technology sector within the tankless industry. Since then, this brand has become one of the fastest-growing companies in its industry within the North American Market.

It is a wholly-owned subsidiary of KD Navien, which has 35+ years of industry experience with water heating and advanced boiler technologies.

This brand operates three training centers to maintain the consistency of its brand. Products are sold by and installed by professional contractors to ensure that every home receives the hot water they want and when they want it.

7. Bosch

Bosch offers one of the best warranties in the industry today, offering replacement parts protection for up to 15 years. When your tankless water heater is installed by a professional Bosch-certified contractor, you receive an additional year on that warranty as well.

This brand also offers an exclusive design that is intended to prevent scale buildup from occurring. They use heat exchangers with a fully modulating vertical burner that allows for more evenness in the heating experience. When added to the turbulators, scale levels are much easier to control.

This brand is the only option for 2-degree precision control across the entire hot water temperature spectrum as well.

8. SioGreen

SioGreen Logo

If you are looking for an infrared tankless water heater, then you will definitely come across this brand. SioGreen is ideal for larger homes and medium to large commercial spaces that have high hot water demand.

These water heaters offer energy efficiency and power with its Quartz infrared heating elements that are used to heat the water. You can also use this system to upgrade an existing system, even if it is a conventional unit that uses a tank.

9. StiebelEltron

StiebelEltron

StiebelEltron has been in the water heater industry for over 90 years and is a trusted and reputable brand known for its efficient products, including their line of digital tankless electric water heaters. They began their company by manufacturing the first immersion water heater back in 1924.

They continue to grow strong within this industry with the Tempra Plus model. This model, for example, comes with electronics, a single flow sensor design, advanced flow control, and a hinged cover that allows for easier access to the unit.

10. Mary Heater Corp

Mary Heater Corp

This company uses a combination of smart technology and digital panels that will automatically set the water output to the temperature you want. Its energy efficiency can also save you up to 60% of your electric bill and is ideal for larger homes and households.

They have been providing consumers with energy-efficient hot water solutions since 1955 and continue to grow and guarantee satisfaction within their field.

Bottom Line on Brands

When asked which of these brands is considered the best when it comes to tankless water heaters, the answers are never the same. The right brand comes down to your home, the type of water heater you are going to purchase, your geographic location, your budget, and the space you have available.

The best tankless hot water heater reviews can help you to determine which brand and model will best suit your needs. Find the model which fits within your budget and make the decision to upgrade today.

Tankless Water Heater FAQ

What is a tankless water heater?

These water heaters are also often referred to as instantaneous, instant flow, on-demand water heaters, and instant-on water heaters because they immediately heat the water as it flows through. No water is retained except for what is in the heat exchanger coil, so you don’t have to have gallons and gallons of hot water saved up in a tank for a few hot showers. They are beneficial for larger households with higher hot water usage and consumption. 

What are some of the benefits of using a tankless water heater in my home?

These devices heat the water when you turn on the faucet, and this helps eliminate the additional costs of keeping several gallons of hot water in a storage tank. Ultimately, it also saves you energy as well. They also have a much longer lifespan than conventional tank water heaters. 

Will one tankless water heater be able to heat the entire house?

Yes. Even if you are in a colder climate, you will find that just one high-quality unit from the brands listed above will be sufficient enough to provide hot water for whole-house heating. 

Can I have a tankless water heater if I live in a higher altitude?

At altitudes of over 4000 feet, you will find that a gas tankless water heater will not function as well and can even lose up to 4% of its BTU for every 1000 feet about this listed height. Electric units, on the other hand, are not affected by the altitude. 

What is an on-demand water heater?

On-demand water heatersare also known as tankless water heaters. When the hot water tap is turned on, the cold water travels through the pipes, and then a gas or electric element heats the water. This allows for a continuous hot water supply.

Is a tankless water heater energy efficient?

An electric water heater is considered to be more energy-efficient than a gas water heater. However, it may take a while before you can really identify the energy efficiency and savings.

What heating elements are used in a tankless water heater?

Tankless water heaters heat the water as it flows through the device. The only water that is retained in the device is what is in the heat exchanger coil. There are different types of tankless water heaters including gas and electric models. Gas heaters are energy star rated and use secondary heat exchangers to make them more energy-efficient. Electric models use electricity as their primary heating element.

What is the flow rate of a water heater?

The flow rate of a tankless water heater is typically measured in gallons per minute, and this is also based on a given heat rise of approximately 25 or 50 degrees Fahrenheit.

How much is the installation of a tankless water heater?

The costs involved in water heater installation can vary depending on a number of factors, including what kind of plumbing is needed, what kind of venting is needed, and if you have a dedicated power source.

Warranty Concerns

Most tankless systems void the warranty for their water heater if the unit is self-installed. Some void the warranty if the unit is not purchased from an authorized dealer. A warranty might be voided if a utility technician does not install the electrical or gas lines.

Be sure to read through all warranty stipulations before finalizing any purchase to ensure you receive the full protection levels you deserve.

What Is the Best Tankless Water Heater for Your Home?

Tankless water heaters provide a lot of convenience for the modern lifestyle. They supply hot water on-demand, eliminating the need to constantly store and re-heat water.

That means you eliminate almost all standby energy costs. At the same time, you can receive unlimited hot water as long as your demand levels do not exceed the peak capacities of the unit you’ve installed.

There are several considerations that must be evaluated by each household. Every tankless system offers specific advantages and disadvantages for homeowners, no matter what their geographic location may be.

Without a careful evaluation of each feature, the costs of purchasing and installing a tankless system could seem like a waste of money.

Keep your family size in mind when shopping. Think about your average groundwater temperature – not what the temperature might be in Summer. Evaluate your simultaneous hot water consumption needs.

Once you have that information, then you’ll be ready for the best tankless water heater reviews. Make the investment, which makes sense for the needs of your family.

Last update on 2020-07-09 / Affiliate links / Images from Amazon Product Advertising API