Can You Use A Tankless Water Heater For Radiant Heat

Tankless water heater can be used to produce radiant heating.

Can you use a tankless water heater for radiant heat.

Water heater for radiant heat water heaters are good for radiant floor heating because they maintain a low temperature. 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. Sample temperature curve for an on demand unit. Because the slab installations will require less than 140 deg f water it is safe to use a water heater to heat the radiant slabs.

However it is important to understand that not all of them are suitable for this task. We will also be installing 2 separate water heaters. Make sure you invest in a high efficiency tankless water heater. The system with a tankless water heater will also be much more responsive have unlimited supply of hot water and clean water running through the floor heating pipes without sediments and other mineral build ups.

So using the unit for radiant heating generally has little or no effect on the sizing calculation. And i would never recommend the use of a tankless water heater for a hydronic space heating system. You really only need a maximum of 120 f for your floor. One to supply domestic hot water and a separate water heater to supply the radiant floor.