

The AC starts in the first stage, remains there for 15 min then goes to the second stage, also until the demand is met. The way the Furnace works is it ramps up from low fire slowly over time until the temperature demand is met, then it shuts down. I paid for a single stage 96% furnace and single stage seer 14 AC. My timing was right and I took floor models from a home show.

I got a screaming deal on both the furnace and the AC. I agree the ComfortNet thermostats are expensive, but if you're going to pay for a modulating furnace you may as well actually get modulating heat out of it, right? Otherwise you may as well have bought a lesser system. On a somewhat lesser scale of importance, the communicating thermostat will troubleshoot and give you error codes and diagnosis, which saves you from having to go pull the panel off the front and decode blinking lights, or potentially climb into the attic or crawlspace if that's where your equipment resides. So the big value add is that you will get the true range of your furnace's capabilities, which translates into more comfort.
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They really just have an on/off capability - it calls for heat until it is satisfied, rather than communicating with the furnace to coordinate how to best get to the correct temp and keep it there. What you have now is probably hooked up to your furnace with 'legacy' wiring and it's really not managing the modulating part properly - sometimes these thermostats make the modulating furnace act like a two-stage unit instead. It can tell the furnace - for example - how fast the temperature in the house is rising, or what the humidity level is so that the furnace can adjust what its doing accordingly. Further, when installed it is a 'communicating' thermostat which means it can talk to the various parts of your system and manage them better. The difference between your current thermostat and the ComfortNet thermostat for your system is that the latter will actually control the modulating part of your furnace. Disclaimer- I am not an HVAC professional, but I do have two Goodman modulating furnaces and CTK04 thermostats. My question is, is the Comfortnet Thermostat worth it?Īs I understand it, the comfornet thermostate will better manage the furnace and AC but would ranter not spend the money if there will not be a proper ROI. I would not mind jumping to a smart thermostat. Currently we are using a Honeywell programmable thermostat. At the time we didn't spring for the Comfortnet Thermostat because of its cost.

Last March we installed a Diakin Modulating furnace and a two stage seer 16 AC in our house.

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