Control Window Unit Air Conditioner With Thermostat?
I have a 120v window unit and I was wondering how feasible it would be to wire it into a wall thermostat. My first though was to use a 120v Taco switching relay made for a boiler but that won't take the amperage and I'd have a big relay box to stare at.
My second though was to add an outlet by the air conditioner. Then I'd use a line voltage thermostat to control the neutral. I don't really see any problem with that.
Next question. I'd like to do the same with a 220v unit and use an existing 24v thermostat that currently controls the heat. The thermostat does have a cooling feature on it that is currently unused.
My thought here is I'd need some sort of enclosure which I could mount on the wall in my unfinished basement below the unit. The wire to the outlet for it is pretty easy to get to. I'd cut the wire and run both ends into the enclosure. The neutral would get spliced together and be un-switched. I'd need to find a double pole relay and run both hots to it. Then I'd have to find somewhere nearby I could put a 24v transformer. Then I'd run 24v into the box and into the relay using the thermostat to switch a side of it.
Is this practical or safe? Any recommendations on parts, specifically what relay and enclosure I'd need?