We would like to upgrade our current older thermostat to our gas heater to one of the Google Nest thermostat and have gone thru the compatible steps, took a picture. Since could not find where I could chat & post photo to confirm it is compatible, posting here. Wires go into the following: RC, W, RH, B, O, Y, & G. Can anyone give me advice on how I confirm with chat or otherwise to see if our older thermostat is compatible to which Nest to purchase to install?
