Can You Use A Tankless Water Heater For Radiant Floor Heat

Even if only part of the home uses.

Can you use a tankless water heater for radiant floor heat.

It is the safest choice as well. You actually have a choice between them as you can use a water heater or tankless for radiant floor heating and not just a boiler. They re extremely well engineered quiet compact 2 2 cu. As such we rate it with 5 stars out of 5.

The reasons are outlined below. Takagi on demand water heaters have many excellent features. The water from the boiler to this heat exchanger flows 24 hours a day in a closed loop making the heat exchanger continuously active i e. A dual purpose system relies on only one water heater to supply both the hot water requirements for the home and the warm water needed for the radiant floor heat.

A tankless hot water heater is ideal for this application since there is no water to be kept hot at all times. Sample temperature curve for an on demand unit. You really only need a maximum of 120 f for your floor. This model has the most impressive flow rate it is well made and it comes with all you are going to need.

Though they are sold primarily for domestic hot water tankless heaters are actually well suited for radiant heating which operates at low temperatures compared with for example hot water baseboard. The best tankless water heater for radiant floor heat is the takagi th3 natural gas. If you don t want to use a boiler you may be able to use a tank style water heater but only in some jurisdictions since using a water heater as a boiler may be a code violation. And i would never recommend the use of a tankless water heater for a hydronic space heating system.

We design radiant heating systems to suit the unique characteristics of tankless water heaters. They have become the standard heat sources for radiant heating applications. Water heater for radiant heat water heaters are good for radiant floor heating because they maintain a low temperature. As you can see this allows the boiler to heat a tank of potable water which in turn can provide domestic hot water and floor heating in an open or closed configuration.

So using the unit for radiant heating generally has little or no effect on the sizing calculation.