Does anyone can confirm that Goodman GMV90905CXA furnace and Goodman CLQ Series 14 SEER 3 Ton A/C are both 2 stages?
Also if both are 2 stages how many wires supposed to come from the outside A/C unit into the GMV90905CXA furnace?
I want to use the Vision Pro 8500D thermostat with this equipment and I want to be sure that the contractor did install it correctly.
The contractor said that this thermostat can be connected to the furnace using just 5 wires (and have a working 2 stages heat and cool) because it will be powered by the 3 AAA batteries. Is this a correct setup?