Nest thermostat compatibility

[Bierma]

Tried the compatibility checker, but it wasn't sure. Question is, is my thermostat compatible with Nest with these wires:

RH, Y, G, W/E

[sporfrog]

Hi Bierma,

A picture of the wiring for your existing thermostat would help.

Probably the W/E is equivalent to W...probaby.  When using the Compatibility Checker enter W and you will find a compatible model.  

Per your list of wires, it appears there is not a C (common) wire, which may be required in some cases. Usually I recommend planning for one if possible.

Here are some options:

1. If there is a free wire not used - say blue - connect it to C or Common at both the HVAC unit and the Nest thermostat
2. If there are no free unused wires, consider the Nest Power Connector.
3. In some cases running a new thermostat cable with a few extras wires so that one can be used as C (common) is also an option.

You may not need C, but is it good to plan for it just in case.

[MelbaDT]

Hey folks, 

Thanks for answering, sporfrog. 

Bierma, I'm chiming in to ensure everything is answered here. Let us know if you still have some questions. 

Best, 

Melba

[MelbaDT]

Hey Bierma, 

Checking back in — still have questions about our Nest thermostats?

Best, 

Melba

[MelbaDT]

Hi, 

I haven't heard from you in a while so I'll be locking this thread if there is no update within the day. Should you have any new issues, updates or just a discussion topic, feel free to start a new thread in the community.

Best, 

Melba