I've gotten 4 bids on my AC and heating needs. I'm going to be going with a Bryant 3 ton 14 seer and the Plus 90T 2 stage 47,000 low and 75,000 High. The company who will be doing the installation said they normally never use a 2 stage Thermostat with their 2 stage units, they said it's run by the board. I'm think this is more like a timer, first stage 16 min if it doesn't meet the set point the second stage kicks in, is this right? If so, what would be the advantage of having a 2 stage Thermostat? Can you set the times of the second stage going off? How would this help? I'm looking at the Vision Pro 8000 (TH830-U-1008 Multi-Stage).
Thanks as always!