Compability

[Radoo]

I would like to find out if my furnace would be compatible with Google thermostat.

[Radoo]

 

[Radoo]

I am referring to Nest Thermostat 

[Markjosephp]

Hello Radoo,

Thanks for reaching out to the Google Nest Community Forum. I'd be happy to take a look at this for you.

Your system is Nest-compatible. However, for the heat-only system, a power problem might occur if overlooked. You might need to have a C-wire installed or a Nest Power Connector to deliver constant power to the thermostat. Also, Nest Thermostats don't use jumper wires, so you no longer need to connect them. 

Let us know if you have more questions.

Regards,
Mark

[Radoo]

Hi, I did buy a Nest Power Connector and I need to figure how to install it to my Lennox furnace which is heat only furnace. 

I am hoping the installation is not difficult 

[Markjosephp]

Hey there,

Perfect! To see how we can install the Nest Power Connector, can you share with me a photo of your furnace's control board where the wires from your thermostat are connected? 

Thanks,
Mark

[Radoo]

 there you go.

[Radoo]

 I do have hard time to identify the wiring coming from the furnace.,.

[RenzJ]

Hi everyone, 

Thanks for the update, @Radoo. The photo you shared with us is of the control board. Find the series of labeled terminals on it and install the power connector there.

From the two wires connected to your thermostat (W and RH), connect the other end of it to the Nest Power Connector, and connect the other 3 wires from the Nest Power Connector to your Control Board.

Also, you can follow the instructions in the Installation Guide. Or you can watch this video: How to install the Nest Power Connector.

Thanks for the help here, Mark.

Cheers,

Renz.

[Radoo]

1. Many thanks for help, I was able to install it and it works.

As a note, after the wiring part and installing the nest power connector, the thermostat must be reset to factory settings and reconfigured. Mine was showing Cool and no Heat. After reset and choosing the right Hvac system, I had Heat as set up . 

[Jenelyn_O]

Hi folks,

Thanks for sharing what might resolve the issue in installing your Nest Power Connector. I'm glad to hear that you were able to install it and it is working successfully. Please feel free to let us know if you have any questions or concerns, as we'll be willing to assist. 

I appreciate the help, Mark and Renz.

Best,

Jenelyn