Digital Thermostats

[gj67]

I keep hearing people talk about digital thermostats. I currently have two XV80 variable speed 3 ton trane furnaces up in my attic. One for upstairs the other one for down stairs. I keep hearing about two stage thermostats and various other fancy thermostats. Currently I have a standard electronic thermostat (Hunter). Basically it has a heat or cool switch. The thermostat allows me to have 4 different cooling or heating settings througout the day. I just set the time of day and temperature for these 4 settings. What would be the advantage to purchasing a 2 stage thermstat? I believe that would be the correct term for it. Hopefully I am making sense out of this message. I appreciate all the input that I have recieved in the past on this board. It is a wonderful information source for a consumer like me.

[matt8085]

If your furnaces are 2 stage, you're better off with 2 stage stats. Better to let the stat determine what stage the furnace is running in than a timer in the circuit board of the furnace. For instance: If you have a 2 stage furnace with a single stage stat and you set the stat to 70, and its 65 in the house. Most 2 stage furnaces will start off in 1st stage for 10 min or so and then ramp up to 2nd stage. If you have the 2 stage stat connected, the system would go right to high fire and then ramp down when temp gets to 69 on stat.(depending on settings on stat of course)

[gj67]

Great, so basically with a digital 2 stage thermostat, the thermostat will be controlling what stage the furnace will run at instead of the board on the furnace. Can you buy 2 stage thermostats or is this something a professional has to install?

[amickracing]

Well.... you "can" buy 2 stage stats, and they aren't exactly impossible to wire. But.... a pro can sell you a much better stat, guarentee it'll work (properly), and no chance of damage to the furnace if you wire something wrong.

[smokin68]

Originally posted by amickracing
Well.... you "can" buy 2 stage stats, and they aren't exactly impossible to wire. But.... a pro can sell you a much better stat, guarentee it'll work (properly), and no chance of damage to the furnace if you wire something wrong.

Yep.

[mayguy]

I agree with the guys. Get yourself a good two stage stat on that nice XV furnace.

With this, you get a much better comfort in your home.

Most of us here likes the Honywell Vision Pro TH8320.


I have it on mine, and well spent money.

[hvac hero]

As a contractor, I try to always put in top notch thermostats. Its the only part of the hvac system that the customer really sees on a daily basis. They feel the comfort from the system but I want them to love their thermostats that they are tinkering with all the time. LOL