Best water heater for radiant floor heat

Best water heater for radiant floor heat

If you have ever been to a house with radiant floor heating, you know how fantastic it feels. The best thing you will feel during the winter seasons the floor is always warm. That’s why the Radiant floor heating system becomes more popular day by day.

A tankless water heater can be remarkably cost-effective for radiant floor heat, which will save you a lot of money. The tankless water heater is the best option for us because of some reason.

It works instantly and has a temperature sensor and heat exchangers that sense the overheating and underwater heating.

Radiant heating systems provide warmth that warms people and objects as the heat comes from the floor.

We will take a closer look at the best water heater for radiant floor heat, highlighting some points to choose the best one for your system quickly.

Letts’s take a closer look and find out your desired one.

Here is the list of best water heater for radiant floor heat:

Ecosmart ECO 18 Electric Tankless Water Heater:

About the item:

Ecosmart is one of the best companies in this field, and ECO 18 is the Best Electric Tankless Water Heater of this brand. This electric heater is not as efficient as the Takagi but will provide sufficient water for an average home.

The first thing you’ll find this item is exceptionally lightweight. The dimensions are 19.8x16x6.4 with just 14 pounds of weight. And that makes installation much more straightforward.

This appliance can heat about 2.5 gallons of water per minute, which is enough to run a dishwasher and a shower simultaneously. If you have a large family, then this water heater might not be suitable for you.

If you live in a warmer environment with average water temperatures above 70 degrees, you can run two showers without any problems.

It would be best to have an electrical panel board that supports a minimum of 150 Amp to run this heater smoothly. And you will stick to three-quarters inch NPT connections for plumbing.

It needs small space, so if you live in a small house, this heater might be the best option with minimal cost.

They offer a high-tech control module to adjust water temperature with no effort. Another useful feature of this product has an automated adjustment system that works depending on the requirement. It has a digital screen that displays the current setting.

Things you will like:

1. It is a durable water heater

2. Made with durable copper and stainless steel materials and it is straightforward to use

3. This product is lightweight and easy to install

4. The item comes with a lifetime warranty

5. 99.8% energy efficient

6. Perfect for small families

7. Compact, durable, stylish


· Not perfect for a big family

· The flow rate could be better

Product information:

1. Item Weight: 14 pounds

2. Product Dimensions: 3.6 x 14 x 17 inches

3. Size: 17 x 14 x 3.5

4. Color: White

5. Voltage: 240 volts

6. Wattage: 18000 watts

Takagi T-H3-DV-N Condensing High-Efficiency Natural Gas Indoor Tankless Water Heater:

About the item:

This model is the best for radiant floor heating, and you can get a gas-powered unit that is excellent when it comes to providing hot water. This product is designed based on the latest technology.

The most exciting feature you are going to enjoy the maximum flow rate is 10 GPM. We must also remember that Takagi is one of the best company and this model is more than famous.

Another exciting feature it’s powered by Natural Gas. As it uses gas to heat water, no large consumption of electricity is required. Electricity also needs to work, but energy demand is low.

The model comes with the new safety features and is even better computerized to prevent problems.

They offer 15 years of limited warranty on the heat exchanger and 5 years on parts for residential. The secondary heat exchanger uses 316L of stainless steel to improve corrosion resistance.

It has a Multi-Unit Controller that you can use to link up to 20 units and has an easy unit controller for four-unit control. You can get 10 GPM flow rate at 35°F and 5.4 GPM at 70°F. It also has self-protection features that ensure the longevity of this product.

Things you will like:

1. 10 GPM flow rate

2. It has excellent energy efficient

3. Advanced safety features included

4. Suitable for colder climates

5. It can supply water consistently for long hours

6. This heater is perfect for large family uses

7. It can measure the safety automatically for common problems


· Perfect for indoor use only

· It needs proper venting but doesn’t provide any kit

· Only professional can installation this item

Product information:

1. Item Weight: 59 pounds

2. Color: White

3. Power Source: Gas-Powered

4. Voltage: 120 volts

5. Temperature Range: 100-185 degrees_celsius

6. Flow Rate: 10 GPM

7. Sound Level: 55 dB

8. Usage: Indoor use only

Excel Pro Tankless Gas Water Heater NATURAL GAS 6.6 GPM:

About the item:

The Excel Pro Tankless Gas Water Heater is suitable for the medium size of a family because it can provide 6.6 gallons of heated water per minute. This product comes from an excellent company that represents its value in its products.

The Wall Mounted Excel Pro is designed to work with applications for hedonic baseboard or radiant floor heating and supply plumbing fixtures and appliances with hot water for the home. It has an LCD that you can use to set your desired temperature.

It also has an energy factor of 0.84 of 0.85. It can adjust heat output in response to the flow rate of water that flows through the unit. The Excel Pro is fitted with a display board, in which the output temperature you can set, and the device modulates its firepower regardless of water flow.

Things you will like:

1. It offers up to 140,000 BTU’s per hour

2. Comes with an LCD control panel for easy understanding

3. Energy factor of 0.84 to 0.85

4. Stainless steel venting


· Mostly an indoor unit

Product information:

1. Item Weight: 39.6 pounds

2. Product Dimensions: 14.5 x 5.5 x 23 inches

3. Color: White

4. Material: Copper

5. Power Source: AC

6. Voltage: 110 volts

7. Flow Rate: 6.6 GPM

8. Maximum Pressure: 150 PSI

How does heated floor work?

Heated floors work to warm the surface of your floor by using electric coils, hot water tubes, or air vents. The heat from the ground then radiates up and into your house, providing a consistent heat source.

Types of radiant floor heating:

Electric floor heating: It works by using an electric coil. It is comparatively easy to install, and the initial cost is less, but the running cost is high. That’s why this system is not so popular.

Hydroid radiant floor heating: Hydroid systems operate by circulating warm water through tubing under the floor. This system is complicated and challenging to install, but the running cost is relatively low; thus, it is popular.

Air heated radiant floors: These systems are not commonly used in residential installations because they are less effective than Hydroid radiant floor heating and electric floors. Typically it uses for a commercial level.

Outdoor radiant heating: During cold climates, many people place radiance heating under their entrance and their sidewalks to avoid snow and ice build-up on these surfaces.

Final Verdict:

Just before the tap, a tankless water heater provides direct heating to the pipes. Such devices usually continue the heating cycle for as long as the valve remains open.

The best water heater for radiant floor heat can make your home more enjoyable. That’s why you have to choose the best product to get the highest comfort and reliable service.

You can pick any heater from our list, and we take only three products after in-depth research on this product.

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