There are forced air in-wall heaters in my house which are quite noisy. I am considering to replace those with electric radiant floors. What would be the least invasive way to do it?
Current heater is 800W 240V. There are three rooms with such heaters all using the same circuit protected by 20A breaker. I presume I can go as high as 5A per room with this setup, i.e. 1200W. But again, if 800W forced air heater is enough to keep the room warm, equivalent power radiant floor should work just as well. Am I missing anything?
Anyway, my current idea is to reuse existing wiring: disconnect the in-wall heaters and use their wiring to power the radiant floors (installing additional junction boxes as needed). Is anything wrong with that plan? Would I be able to use existing thermostats that directly control power to the heater (i.e. no low voltage lines)?
Washington state, if that matters.