Quote:
Originally Posted by bizaro86
If you don't have enough wires you can add the functionality of more using a fast-stat. I only have 2 wires and I have converted it to a common (for my nest) plus wires for controlling heat, fan, and AC. It was pretty easy, but you have to get the fast-stat at an hvac supplier.
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The Honeywell I had installed 6 years ago had something like this built in.
I only have two wires, but it has a unit in the furnace room that you can connect all the wires you need to, and then the signal goes to the thermostat with just the two wires.