Best Electric Boiler For Radiant Floor Heat

Best Electric Boiler For Radiant Floor Heat in 2020

Are you willing to buy the Best Electric Boiler For Radiant Floor Heat? Than you are in the perfect place.

Radiant floor heating is a very easy and simple process to heat water in the home. Indeed, this is a system of pipes piled like snake structure. They pass hot water throughout your whole home to heat the floor.

Unlike electric heaters, they don’t save a lot of hot water. It is a rather easier process to keep giving you hot water even if you shut down the system. If you are looking for the best electric boiler for radiant floor heat, there are many options.

So, let us see which one is the best of them that we should select.

Best Electric Boiler For Radiant Floor Heat

1. Stiebel Eltron Tempra 29 kW

This is one of the best electric boiler for radiant floor heat. It is a single-phase system that works on both 50 and 60 Hz systems. The boiler comes with a compact design. At the same time, it works very efficiently. So, let us see the features that make this heater the best one.


-Easy to install

What makes this one ideal is that this one is very easy to install. People avoid systems that come with hard installation systems. This is because managing them is very difficult for the first time. However, Stiebel Eltron Tempra Plus is easy to install. This is because you don’t need to install any venting for it to work.


This model is in the market for quite a lot of time. Many people had used it and are still using this best electric boiler. The ultimate reason for their continued trust is the fact that this boiler remains reliable throughout the use. So, you don’t need to worry about long-term use.


The design of the boiler matters a lot. It tells you how much space you need to install the boiler in your home. For large models, you need a large space. However, this one from Stiebel Eltron comes with a sleek design. It will fit at any place where you want to install it and will be easy to install.

-Power saving

Water heating requires a lot of power. This had a direct impact on your home electric bills. However, this model from Stiebel Eltron is very efficient to work. It saves up to 15% energy. So, you will never think the second time before running this home electric boiler for you.


  • Power saving
  • Efficient
  • Sleek design
  • Long warranty


  • Although it is reliable, many users claim it doesn’t work after 3-4 years.

2. Stiebel Eltron Water Heater – Tempra 29 Plus

This one is another electric boiler system in our list from Stiebel Eltron. The 2nd one in our list from the same company indicates how well boilers these companies make. This one is another heavy-duty boiler that will meet all your home boiling water needs. Let us look at all the features from Stiebel Eltron. This is the plus version- means advance version of the Stiebel Eltron Tempra 29 KW.


-More hot water

The reason people love this unit is the fact that it gives you more hot water. It will heat water on demand and give you a continuous supply of hot water. Ever worried how much hot water does it supply? Well, Stiebel Eltron claims to give you an unlimited supply of hot water to its users.


When it comes to design, there is no difference between this model and the previous one. This one is also very sleek and will save a lot of space in your home. It is easy to control, and the front unit will remain locked when not in use. The system requires no venting. So, you install the unit with a lot of ease.

-Energy saving

The energy factor of this unit is 0.99. It indicates that the unit saves a lot of energy at a constant rate. When the system is on standby, it retains the heat. The system doesn’t lose energy when it is on standby mode. For saving energy, it comes with Intelligent self-modulating technology. This helps the unit in further saving energy.

-Silent working

We don’t like systems that make noise. Even a small noise, if it is at a constant rate, irritates us. So, this unit works in complete silence, so you never know it is working.


  • Long warranty
  • Small sleek design
  • Energy saving
  • Silent operation
  • More hot water


  • Make sure the unit arrives in working condition.

3. Rinnai RUCS Series SE Water Heater

No, not again from Stiebel Eltron. This one is a classic water heater from Rinnai. We highly recommend this water heater, because it is the best of best electric boiler for radiant floor heat. It has a sleek design and a very attractive look. This makes it the best one for your home. The unit needs an indoor installation. With the long warranty of Rinnai, you will love the service. Let us look at other features of the product.


-Endless hot water

This unit from Rinnai is known to provide a lot of hot water at a time. It is very powerful. Ever wondered how much hot water it provides at a time? Well, it provides as much as 7.5 gallons of hot water per minute. If the ground temperature is a bit high, you will get even more hot water per minute.

-Easy controls

The best thing about this unit is that you can control it with a lot of ease. There is a mobile app for the unit. When you connect the unit with this app, you can control it from the same app in the future. Be it timers, schedules, or even regulating the unit; you can control all these settings from the app.


The unit comes with a long warranty. You will get 12 months of labor warranty for your unit. For parts of the unit, you get 5 years warranty. This warranty keeps you in control in the long run.

-Very efficient

We know water heating systems require a lot of power. They impact our home power bills with a direct effect. However, this model is very efficient. It also comes with a vacation mode that is useful if you get some days of normal heat. In this mode, the unit will go on standby.


  • Up to 7.5 gallons
  • Easy to control through the mobile app.
  • Efficient


  • Less reliable

4. Takagi T-KJr2-IN-LP Indoor Water Heater

This is also one of the best electric boiler for radiant floor heat from Takagi. It is very powerful and will heat a lot of water for you at the time. The unit is very light in weight, sleek design, and perfect looking. So, let us check all the details of the unit.


-Very powerful

The unit works with a lot of power. It comes with a max BTU of 140,000 and a min of 19,500. This enables the unit to heat water for you even if it is very cool outside. Thus, the unit works best if you have more water needs or more people living with you.


We know that many users like light units. This is because they are easy to handle. At the same time, they take up less space and are easy to install. Takagi knows this fact and came up with this model that is very light in weight. It weighs only 38 pounds. So, you will never need to worry about carrying it.

-More hot water

The more amount of hot water your unit gives you, the better it is. It eases you because you don’t have to wait for hot water. This unit from Takagi is capable of giving you as much as 6.6 gallons per min. Thus, you will never run out of hot water.


Unlike the previous models from Stiebel Eltron, this one requires venting for work. You must have 4-inch category 3 venting to use this unit. It has thermistors both at the inlet and outlet. In this way, it monitors the temperature at a constant rate.


  • The unit is very powerful.
  • Very light in weight.
  • Safe to use the product.
  • Very easy to use the unit.


  • Customer support, not the best.
  • Not the best reliable.

5. Takagi T-H3S-DV-P 8 GPM

This one is another electric boiler Takagi on our list. This one is even powerful and is designed to provide as much hot water as you may need. If you have extreme use of hot water, I will suggest you go for this model. Looking for other features? Let us explore them below in detail.


-Very safe

Electric boilers are usually safe to use. However, you still need to worry about exact specs. The safer your product to use, the easier it is to use in the longer term. This unit from Takagi comes with computerized options for safety. As a result, you will never worry about your safety. It has no pilot light to worry for. Thus, it is a safe product overall.

-More hot water

The last product that we reviewed provided as much as 6.6 gallons of hot water per minute. This one is even better and falls just behind the next one from Rinnai. It will give you as much hot water as 9 GPM. However, the rate depends on the ground temperature. The cooler it gets, the less hot water GPM you get and vice versa.

-Very powerful

This model is my pick from the same company because it is more powerful than the previous one. The specs prove my claim. When it comes to gas input rating, it takes as much as 180,000 BTU. This makes it very powerful and serves best for extreme hot water needs.

Even if it is very cold outside, you will get cold water for 2 baths at a time. On the other hand, if it is warm outside, you will get cold water for as much as 3 baths at a time.


  • Very powerful
  • Safe to use
  • 8 GPM hot water


  • Not very easy to install

Read more: Best Boiler For Radiant Floor Heat.

6. Rinnai RU160iP Sensei 9 GPM

Last but not least is this powerful unit from Rinnai. It is the most powerful unit from my list and will give you the most GPM. You will install it indoor and the unit is ready to give you a lot of hot water. Some people claim that it costs high. However, when you see the quality and power of the unit, the price seems sensible. This device is a one-time investment for your home hot water needs.


-Efficient and Tankless

Like other models from the list, this unit is also one of the best electric boiler for radiant floor heat and works tankless. When it comes to giving you hot water, the unit is very efficient. It will give you more water than the amount of energy it uses.

-More hot water

This unit from Rinnai is very powerful and comes with an increased BTU rating. The unit takes as much as 160,000 BTU when it is set at max. In min, the unit takes as low as 15,000 BTU. This enables it to give you more hot water even in cold weather. This is our best pick in terms of GPM as it gives you 9 GPM. Thus, you will never run out of hot water.

-Latest technology

This unit comes with the latest circ-logic technology. This enables you to set your habits of warm water use. Thus, you will get warm water whenever you need it. This feature attempts to save energy.

-Compact design

The unit comes with a compact design. You can even install it in non-traditional spaces. This saves a lot of space for you. Not only the unit is affordable, but it also saves energy in long-term use.


  • Very efficient in use.
  • Heat water only when you need it.
  • Compact design
  • Very reliable in long-term use


  • You need a plumber to install it.

Final thoughts

Indeed, these were all the models from our best electric boiler for radiant floor heat. If you have less hot water need, then you must select a unit with less power and small GPM. Thus, you will save more. For extreme usage, I will pick Rinnai RU160iP Sensei Super High Efficiency for you. You will love the way it heats more water.

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