topic Re: Thermostat compatibility in Nest Thermostats

Thermostat compatibility

joakiin_22 — Thu, 25 Aug 2022 15:06:43 GMT

Hi there,

Can someone help me understand if my actual thermostat can be replaced with a Nest Thermostat?

Here's the actual wiring:

I also have a Netatmo thermostat and the wires used by it are H ON and L.

Many thanks!

Re: Thermostat compatibility

DragosC — Wed, 31 Aug 2022 09:28:47 GMT

Hi there @joakiin_22

Thanks for letting us know. Could you tell me please what type of heating system do you have? Is it a combi boiler with hot water on demand or a system boiler with thermostatic hot water control?

Re: Thermostat compatibility

joakiin_22 — Wed, 31 Aug 2022 10:09:19 GMT

Hi @DragosC

Thank you for your reply. Sorry if I cannot answer properly as my knowleage is limited but it's a heat pump.

Re: Thermostat compatibility

DragosC — Wed, 31 Aug 2022 10:16:13 GMT

No worries. Is it a heat pump with only heating, no hot water?

Re: Thermostat compatibility

joakiin_22 — Wed, 31 Aug 2022 11:01:52 GMT

Heating and hot water. But I think the heating it's independent because I can clearly see the two valves that activate the heating in the 2 different areas of the house.

One of them is now connected to my Netatmo thermostat and the wires used by it are H ON and L.

Thanks!

Re: Thermostat compatibility

DragosC — Wed, 31 Aug 2022 11:06:24 GMT

Understood. If you have zoned heating, you'll need one thermostat for each home zone.

Re: Thermostat compatibility

joakiin_22 — Wed, 31 Aug 2022 11:07:54 GMT

Yeah, I am trying to understand if NEST is compatible with my system. I cannot find any information about my cabling.

Re: Thermostat compatibility

DragosC — Wed, 31 Aug 2022 11:19:15 GMT

Have you tried our compatibility checking widget from the Google Store? Here's the link for it, let us know how it went: https://goo.gle/2UDR7jj

Re: Thermostat compatibility

joakiin_22 — Wed, 31 Aug 2022 11:45:44 GMT

That's really helpful, thanks.

It says it's compatible but I am just not sure what cables I need to connect, do you have any idea?

Re: Thermostat compatibility

DragosC — Wed, 31 Aug 2022 11:49:05 GMT

You can find the right wiring diagram corresponding to your heating system in the installation guide here: https://goo.gle/2pTMYLC