Emerson 1F78 to google nest

[Anandk77]

 

[CoolingWizard]

@Anandk77 , your current thermostat uses a conventional system and is fully compatible with a Nest Thermostat. You appear to not have a Common wire. I would suggest you use a Nest Thermostat as there is no need for a learning model.  

AC Cooling Wizard

[Anandk77]

Thanks. Possible to mention which wires in current set up will go in to in Nest?

[CoolingWizard · Accepted solution]

@Anandk77 , your current setup has the following conductor wires attached:

Red, Attached to Rc with Jumper to R, attach to Nest R or Rc. This is 24 Vac Power In

Yellow, attached to Y, will attach to Nest Y or Y1.  This is the Compressor Relay

Green, attached to G, will attach to Nest G, this is the blower fan relay

White, attached to W, will attached to Nest W1 or W.  This is the heating relay

Blue, currently not attached, this wire is a candidate for use as the Common attached to C.

I believe you have a Gas Furnace and this make your system basically Gas, Forced Air. 
You can use any if the Nest Thermostats including the Nest E Learning and the Nest Learning Thermostat Gen 3.  Or you can go the basic Nest Thermostat which is only like $89.00US when it is on sale. 

I Hope this helps,

AC Cooling Wizard

[Anandk77]

Excellent, thank you for your detailed reply. 

[Jenelyn_O]

Hi there,

Thanks for posting in the Google Nest Community forum. I'm sorry for the delay. I hope you got the answer you're looking for. Please let us know if you still have questions in mind, as we'll be willing to assist you further.

I appreciate your help, @CoolingWizard.

Best,

Jenelyn

[Jenelyn_O]

Hi Anandk77,

I wanted to follow up if you still need help. Please let me know if you’re still having any concerns or questions from here, as I would be happy to take a closer look and assist you further.

Thanks,

Jenelyn

[Jenelyn_O]

Hey Anandk77,

We haven't heard from you in a while so we'll be locking this thread if there is no update within 24 hours. If you need assistance or want to discuss topics, feel free to start a new thread.

Regards,

Jenelyn