Best Electric Tankless Water Heaters For Whole House – Reviews

Traditional water heaters can be a pain for people with limited apartment space, specifically when they are in desperate need of hot water. Hence, if you are fed up with making extra space for heaters to survive through winters, you need not worry, as nothing better than the best electric tankless water heater for whole house can serve you. Personally, I really like electric tankless heaters for entire household requirements, all thanks to their ability to provide you with consistency and a high-temperature range.

So, if you are building a heating setup for your apartment space, make sure that you have thoroughly studied their mechanism and elements. I have brought some best electric tankless water heaters for the whole house based on flow rate, heating capacity, temperature settings, and durability. So, dive right in and choose wisely.

4 Best Electric Tankless Water Heater for the Whole House

1. Stiebel Eltron Tankless Water Heater – Largest Electric Tankless Water Heater

Stiebel Eltron Tankless Water Heater for Whole House

I am starting my list of the best electric tankless water heaters for the whole house with this Stiebel Eltron, all credits to its efficient motor and advanced flow control. The highlights of this model are microprocessor technology and digital temperature control that help you with convenience and a consistent flow. Similarly, its ability to provide you with optimal temperature makes it great for an entire family without on a constant basis.

To start with, this water heater is equipped with a microprocessor technology that helps you with a constant flow, mitigating the need to reconsider temperature after some time. This function further helps you in maintaining a regulated temperature throughout routine chores. It also includes a digital control panel that is absolutely convenient and allows you to set it up as per your desired degree. All in all, it has a heating range between 86- and 140-degrees Fahrenheit, which is more than enough for a house.

Speaking of the flow rate, this Tempra Plus model has the ability to provide you with a consistent 4 gallon per minute flow. It is considered a medium-rated flow and has the potential to run through different fixtures without any consistency issues. In addition, considering the fact that it is a tankless design, you won’t need an expensive ventilation system. Hence, you are reducing the investment cost to a great extent. For installation, you just need a little bit of previous experience.

Similarly, when it comes to construction, the entire system is made up of stainless steel (including heat exchanger), so there won’t be any issues with durability or corrosion. It also occupies less than usual space which makes it a strong contender among its competitors with a similar price range. It also incorporates Tempra technology which absolutely reduces the running cost up to 20%, making it an energy-efficient alternative. So, you can easily cut the excessive price from the bills.

Pros
  • Accurate temperature settings
  • Advanced micro-processing technology
  • It is energy-efficient
  • Offers straightforward installation
Cons
  • It can be a bit expensive

In the end, if you are looking for something that is appropriately equipped to serve an entire household, I would highly suggest you go for this Steibel electric heater. It comes with a compact size and stainless steel construction that prevents corrosion and saves space while installation. Similarly, it incorporates microprocessor technology that helps you in regulating the heat while using it. I highly appreciate the precise and accurate temperature settings that remain consistent in different fixtures.

 

2. EcoSmart ECO 11 Electric Tankless Water Heater – Best Electric On Demand Water Heater

Ecosmart eco 11

The runner-up in my list is this EcoSmart 11, hugely popular for its consistent flow rate and innovative self-modulating technology. It is equipped with energy-star ratings that help you with an improved flow and control the energy output as per your requirements. I absolutely loved the small size and wall-mounted design as it doesn’t take any space as well as looks stylish. In addition, it also has a low running cost and simple control options that facilitate you well.

First of all, it is equipped with stainless steel pipes and heat exchangers that prevent corrosion to a great extent and provide you with long service life. I really like its wall-mounted design, which saves a lot of space and doesn’t need any expertise for installation. So, if you have a little bit of experience, you are good to go for assembly. It further incorporates fairly simple control options that allow you to navigate easily and set the temperature as per your requirements (starting from 67 degrees).

Secondly, when it comes to performance, this one has the ability to provide you with two gallons per minute rate that can regulate two showers and sinks simultaneously, making it an impressive alternative for small apartments. It further has an energy rating of 0.98, which is absolutely great for anyone in search of low running costs. On the whole, the flow rate is consistent for the most part and doesn’t offer an issue of unpleasant temperature during showers or other chores.

Another thing that makes it a remarkable choice for house owners is its self-modulating technology that is best known for its regulated energy controls and its ability to regulate the heater at optimum temperature. Hence, with this function, it is made sure that the machine is only utilizing power when it is needed for heating the water. This helps you in saving the heating cost up to 40%, so you don’t have to worry about the excessive electricity bills that can be overwhelming with tankless heaters.

Pros
  • Offers low running cost
  • Easy/ straightforward to install
  • Includes a small design
  • Offers consistent temperature
Cons
  • It demands regular maintenance

Final thoughts, if you are in search of a quality water tankless heater with a consistent flow rate and improved energy efficiency factor, this one from EcoSmart is a great alternative for you. It is best known for its self-modulating technology that helps you in regulating the optimum temperature at times when you need it. In addition, its small and space-saving design is accompanied by convenient controls that facilitate you well. All in all, it is an impressive deal for small households with limited space.

 

3. Ecosmart ECO 27 Electric Tankless Water Heater – Best Electric Tankless Water Heater for Whole House

 Ecosmart eco 27 tankless water heaters

Similarly, here comes another quality option from EcoSmart tankless series, famous for its competitive price and improved flow rate. This tankless heater is an appropriate choice for anyone looking for precise temperature controls and modulating technology. So, you don’t necessarily have to worry about the running cost and convenience. I also really like the digital temperature settings that help you in setting your preferential heating arrangement. All in all, it is quite portable and doesn’t take much space.

The first thing you will notice in this heater is its self-modulating technology that draws and utilizes the power as per your demands. So, it regulates optimum temperature only when you need it, saving energy to a great extent. All in all, this heater has been given an energy rating of 0.98, which is quite commendable for such a price. I also really like the fact that despite using less than usual power, you will not face any issues with the flow’s consistency, making it suitable for large households.

Another thing that makes it quite valuable is its digital temperature settings. Hence, this tankless heater from EcoSmart can go up to 140 degrees Fahrenheit with no consistency issues. Here, its ability to regulate the heat with a flow rate of six gallons per minute makes it great for different fixtures. You can also adjust this flow rate between 2.7 and 6 gallons, based on the nature of the chore. For this purpose, the manufacturers have added a sizing guide that helps you in selecting the desired heating arrangement.

Last but not least, when it comes to construction, it is quite impressive that, at such a price, the manufacturers have added stainless steel exchangers and pipes. Thereby, you don’t have to worry about the corrosion and potential damage to the pipes. Likewise, it has a wall-mounted design that saves a lot of space and helps you with a quick recovery. For installation, this tankless heater is equipped with an instruction manual yet demands any expertise as well as some previous experience.

Pros
  • Offers great recovery time
  • Consistent flow rate
  • Durable and self-regulating
  • Offers low running cost
Cons
  • Assembly demand professional skills

Wrapping up, if you are looking for a money-saving and space-saving alternative for your routine requirements, it is undoubtedly one of the best electric tankless water heaters for the whole house. I absolutely loved its small design and self-modulating technology that not only saves electricity but also helps you with the optimum heating arrangement. All in all, the consistent flow rate and impressive recovery rate make it a well-suited option for large households with massive hot water requirements.

 

4. Rheem RTEX-18 18kW 240V Electric Tankless Water Heater – Best Electric Tankless Water Heater for Large Homes

Rheem RTEX 18

Last but not least in this list of the best electric tankless water heaters for whole house is this Rheem RTEX-18, best known for its ability to accommodate high-capacity hot water requirements. It is equipped with immersion heating chambers that help you with a consistent flow of water. Likewise, it also has a high energy ranking, helping you with reduced running costs. Here, I absolutely loved the fact that manufacturers have added a high heating range and digital control panel that serves you well with convenience.

To begin with, the heat chambers are made up of heavy-duty stainless steel construction, which prevents any corrosion or leakage. Further, the wall-mounted design helps you in saving space while installation, making it great for apartments with limited space. For assembly, it is pretty straightforward yet demands some level of previous experience and expertise in it. Likewise, the outer body is made up of a combination of copper and non-corrosive metals that helps you in extending its service life.

Another thing that I absolutely love about this model is its digital temperature display. So, you just have to set it as per your requirements. On the whole, the heater can go up to 140 degrees Fahrenheit (starting from 80 degrees) without any consistency issues. Here, it has considerably fast heating technology as it can heat up the water in merely three minutes. So, you don’t have to wait for some time before taking a shower or washing dishes.

In the end, it is also accompanied by self-modulating and automatic heat control technology that helps you in keeping the heater at an optimum temperature. In simple words, it only utilizes the needed power when you demand hot water. When it comes to performance, it is equipped with a flow rate of 4 gallons per minute which is absolutely great for a large household. The only downside to this model is that it can be demanding in terms of money and time when it comes to installation.

Pros
  • Includes fast heating technology
  • Offers precise/ accurate controls
  • Includes self-modulating technology
  • Offers great energy efficiency
Cons
  • Installation demands investment

In essence, this one from Rheem is another quality water heater for anyone in search of energy efficiency and performance. It is best known for its self-modulating technology and fast heating technology that helps you in facilitating your routine household chores. Additionally, it comes with a digital temperature display that is pretty accurate and precise. Here, the high flow rate without consistency issues makes it a great alternative. Finally, I absolutely appreciate its space-saving design for my place.

 

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Frequently Asked Questions

Can a tankless water heater run a whole house?

Electric tankless water heaters are designed to generate high flow rates and big commercial places. So, these are absolutely great for a large volume of water supply with a consistent flow rate and high-temperature range. Here, the fact that these alternatives are used to heat up the water while it is flowing through the pipes makes it great for different fixtures simultaneously. Therefore, as long as it is equipped with consistent flow and high heating range, your large household is good to go.

How big of a tankless heater do I need for a family of three?

Well, it differs from model to model. However, in simple words, you would need something between 4 and 6 gallons per minute capacity for a family of three. Here, I would also suggest you make sure that it is equipped with self-modulating technology, so you can reduce operational costs to a great extent. For this purpose, my favourite across the market is EcoSmart Eco 11, as it is equipped with a fairly decent flow rate and precise temperature controls that facilitate you well.

Is it worth the money to get the electric tankless water heater?

Yes, it is absolutely worth getting the tankless water heaters, specifically if you have large hot water requirements. These water heaters work in a way that they do not have already stored water, and it is heating up while running through the pipes. So, these are best when it comes to energy efficiency and consistent flow rate. Likewise, these heaters are equipped with high-temperature and heat ranges, so you can easily accommodate varying requirements.

Does a tankless water heater save money?

Well, it primarily depends on the model you are going for and your individual requirements. For instance, if your desired model is equipped with self-modulating technology, it is most probable that you will be able to save electricity and reduce operational costs. On the whole, tankless heaters are a bit more expensive than gas-powered heaters, considering their working principle and fuel efficiency.

What makes the best electric tankless water heater for the whole house?

There are a number of things you should look into while buying the best tankless water heater for the whole house. To start with, I would recommend you consider the flow rate, temperature settings, and modulating technology. Apart from this, make sure that it is not demanding when it comes to power utilization and has durable heat chambers to prevent corrosion.

Final Thoughts

In the end, traditional water heaters can be a pain for people with limited apartment space, specifically when they are in desperate need of hot water. So, all you need here is a quality electric tankless heater that can provide you with a constant flow of hot water with desired temperature and energy efficiency through different fixtures. If you are looking for one, my absolute favourite is;

  • Stiebel Eltron Tankless Water Heater is best known for its micro-processing technology, precise temperature settings, and consistent flow rate.

Finally, I hope that you soon will find the best electric tankless water heater for the whole house as per your requirements.

Adam

2 thoughts on “Best Electric Tankless Water Heaters For Whole House – Reviews”

  1. I’m thinking about installing a tankless water heater in my home that is 960 square feet with 1 bathroom equipped with one sink and a regular size tube my kitchen just has 1 double sink and that it. can you tell me the size and the gallons per min. and the cost saving difference than a tank style water heater?

    Reply
    • Hi Ronald,
      You can read about the energy consumption and other differences between a tankless and tank water heater in the blog section of my website.

      Reply

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