What is the difference between stage two and aux heat?
I have a Rheem A/C Heat Pump split with gas backup. The gas unit is mounted in the air flow directly before the A/C HP coil. Should the gas unit be wired as stage two heat, or is it OK to wire it as just aux/EM heat? There is no other heating unit. What is the difference between stage two and aux?
Heating & Cooling
Answers & Comments
The furnace shoud be wired to W1 amd EM Heat. If your heater is a two stage furnace then hook the thermostat W1 to stage 1 amd W2 to stage 2. Most new 2 stage heaters will control stage 2 with the control board.