I currently have an American Standard thermostat installed.
Has anyone here had experience replacing an American Standard thermostat with a smart thermostat (Aqara or another brand)?
I’m mainly trying to understand whether systems like mine would be compatible with the upcoming Aqara W200 when it becomes available.
Need much more information in order to know what equipment you’re actually using. American Standard (same company as Trane) makes a variety of HVAC systems. Traditional systems use simple 24VAC wiring between the thermostat and the Condenser/Air Handler. These systems are what would be compatible with the W200 thermostat, I believe.
Newer, higher end systems use ‘communicating’ thermostats which are much more proprietary. They communicate with the rest of the system over a serial/network connection, instead of just simple 24VAC signals for Heat/Cool, Fan, etc… I do not believe the W200 thermostat can replace one of these proprietary communicating thermostats.
Often, the simplest way to know if to gently remove the thermostat from its wall-base-mount. Take a picture and then let us know what you see in terms of the wiring. If you see multiple wires connected to terminals like G, O/B, W1, Y1, R, C - then chances are good you have an old-school 24VAC thermostat that the W200 might be able to replace.
Unfortunately, that appears to be a Trane/American Standard ‘communicating’ thermostat based on the wiring.
Data High and Data Low are not traditional thermostat wire terminals.
This is what traditional thermostat wiring looks like.
Thank you very much! Is there any way to “retrofit” or it would require a new HVAC system ?
I believe it would require a new HVAC system.
Most “communicating” HVAC systems are fairly high-end models, often with much higher SEER ratings than other systems. Thus, if you’re not having any issues with your HVAC system, I definitely would not recommend replacing it just to be able to use an Aqara thermostat.
Instead, you might be able to replce your existing American Standard/Trane communicating thermostat with a higher end model that support smart home integration (assuming your existing thermostat does not do so already?)
Great answer.
