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I'm purchasing a house that has poorly functioning (20-30%) ambient electric heat built into the ceilings. My inspector said the best solution would be to disconnect that and connect new electric baseboards to the existing thermostats since they are all in good shape and the retrofit would be relatively simple. Replacing the ceiling heat would be complicated and expensive to say the least. I don't like the idea of all of that wall space lost but I can live with it. I'd appreciate any ideas / recommendations. It's a passive solar house btw so it warms up pretty well.
The cost of a few thermostats is the least important factor in a retrofit.
Getting the wire to the spot(s) on the wall where the heaters go is the issue.
If you can get the wire there without too much disruption then those circuits can be run
through a relay and use a single 24V programmable thermostat.
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Before all of that though my first thought is split pack heatpumps.
So... What is above the ceilings? Can you run the refr lines any easier?
The main floor has entirely vaulted ceilings (no attic). The downstairs is partially below ground level so the walls all have an inch or so open space at the bottom behind the baseboards that allow easy access to run the wires. Upstairs they'd have have openings cut. I was also considering some sort of ductless heat/ac system similar to what you suggested but need to see how much it will cost. Thanks!
I put electric baseboards in our sunroom. They were relatively cheap and connect into the 110 power supply. However they do nto put out all that much heat. In the peak of winter, they just keep the room tolerable (maybe 40 ish). The ones that put out a lot of heat run on 240. Maybe you arealdy have240 v. circuits for your existing heat.
You do not really lose wall space with radiators becasue you cna put furniture directly in front of them. Your furniture will have to be a couple of inches out form the wall, but usually you need to do that for outlet access anyway.
i find out of all heat sources electric heat couples itself to the room far better.
rule of thumb is figure 10 watts a sq ft if its an insulated area and 15 if its not.
another nice thing about electric is you still have heat if one heater fails as well as controlling each room seperatly.
when we had the house in the poconos i put electric baseboard in our bedroom so at night i didnt have to heat the entire house as much as the bedroom.
Are you in arizona?
We have two 1500 watt baseboard heaters in the sunroom, it is about 9x21. It is insulated but has a lot of windows. It cannot keep things warm when it gets below 20 outside, especially with wind.
I would agree with Mrrational, that the Minisplits are the best solution. Also known as an air source heat pumps or Ductless mni minisplits. The Mitsubishi Hyper heat is the top of the line as far as efficiency. If these are out of your price rnge, I would never put in Baseboard units, been there, done that. I much prefer Radiant cove heaters. More efficient and they mount high on the wall so no room is lost. not much more money.
I would first figure what is cheaper in your area: electricity, heating fuel, natural gas, propane, wood pellets, coal, or firewood. The next step would be to choose the right heater sold in the area, or a neighboring State.
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