I have a home built in 2006. It has baseboard heating and Air Condition vi a blown air. The upstairs zone contains a 5 wire thermostat while the downstairs zone is only two wires? The AC unit is in the attic. Is it possible to run a 5 wire or 3 wire to the thermostat on the first fl oor? I am looking to add a Honeywell wifi thermostat.
Thanks!