Google Nest Community

bro Just follow the power connector wiring exactly and don’t double-feed C from the furnace and adapter together. For your dual thermostat setup heat only + cool only, you’ll likely need a proper HVAC zone or separate control wiring if you want to co...

With heat pump + gas backup setups, some systems don’t allow manual fan control unless the HVAC control board has a dedicated G fan terminal enabled. It could also be that the thermostat is set to auto fan logic, which overrides manual input in certa...

Yeah, a lot of long-time Nest users are feeling that change because older setups allowed more granular control. The newer Gen 4 system is more automated, so it prioritizes simplicity over separate heat/cool configurations in some cases. Sometimes it ...

Old thermostats like that are usually pretty simple systems, so don’t worry too much. In most cases red is power (R), white is heat (W), and black is often common or sometimes fan depending on setup. Before connecting anything, it’s best to check you...