Google Nest Community

cbroverman · 09-17-2024

Hi, Nest claims that there is no C wire needed for the Learning Thermostat. I only have 2 wires and an old boiler with T/T terminals only. My questions are: (1) Without constant power how long will the battery charge last on the thermostat? (2) How l...

cbroverman · 09-09-2024

Hi, I've spent days trying to figure out if I can use this Nest Thermostat (2020 version, not E, not learning 3/4) with my old boiler system (2 wire T/T) and would appreciate suggestions. I currently have the thermostat hooked up with the red wire in...

cbroverman · 09-16-2024

Thanks for that info; exactly what I was looking for.

cbroverman · 09-10-2024

Thank you for your reply! I did attach those two wires coming out of my old thermostat accordingly. (those are the ones connected to the T/T contacts. However, there is no constant power being sent to my thermostat since there is no common wire. How ...

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Nest Learning Thermostat (third gen) with no C wire and no constant power

"Regular" Nest Thermostat (2020) with old furnace and 2 thermostat wires

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Re: "Regular" Nest Thermostat (2020) with old furnace and 2 thermostat wires