Thermostat compatibility

[joakiin_22]

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!

[DragosC]

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? 

[joakiin_22]

Hi @DragosC 

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

[DragosC]

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

[joakiin_22]

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!

[DragosC]

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

[joakiin_22]

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

[DragosC]

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

[joakiin_22]

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?

[DragosC · Accepted solution]

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