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Compatible? - Straight Answer - W and R cable only on Current Unit

SilasofNj
Community Member

I have a Honeywell Home unit, which uses a W and R cable hookup. (see attached picture.)

IMG_0655.jpeg

The R is jumpered with the RC cable. (Not sure if that's actually needed with a Nest.)

I have a free standing until downstairs. Nothing in the wall or floor. 

Is the Nest actually compatible?

1 Recommended Answer

CoolingWizard
Silver Product Expert
Silver Product Expert

That is a forced air gas furnace and that is fully compatible with an Nest Thermostat.

Ken

NestPro and HVAC company owner

View Recommended Answer in original post

9 REPLIES 9

CoolingWizard
Silver Product Expert
Silver Product Expert

You original thermostat you are have there is a low voltage thermostat. It works on 24 Volts Alternating Current.  The power arrives at the thermostat on the R wire. You are correct in that the jumper wire between Rc and R will not be needed with a Nest Thermostat.   When a thermostat determine that Heat is needed, it connects the R to the W. The voltage travels on the W wire to the heating system.  This  voltage on W starts the heating cycle.  

What type of Heating system do you have? Can you take a picture of it and it’s manufacturer label showing the model number?

Ken, The AC Cooling Wizard

NestPro and HVAC company owner

Thanks for the response. (see below)

IMG_0659.jpeg

If this will work with Nest, I will purchase this bad boy tonight!

Thanks.

CoolingWizard
Silver Product Expert
Silver Product Expert

That is a forced air gas furnace and that is fully compatible with an Nest Thermostat.

Ken

NestPro and HVAC company owner

Sweet! Thanks Ken. Just purchased my unit! Thanks for your help!

Markjosephp
Community Specialist
Community Specialist

Hi there,

 

Thanks for assisting here, Ken. Big help!

 

@SilasofNj, I know it has been a while but I wanted to ensure that everything is covered here. Please let us know if you have any other questions or concerns.

 

Regards,
Mark

I'll let you know once my Nest Arrives Dec 15th. Can't wait to install this guy. Company paid 75% of it. Hard not to resist!

Markjosephp
Community Specialist
Community Specialist

Hi SilasofNj,

 

Sounds exciting! Thanks for the update. Please keep us updated on how the installation goes, and we'd love to hear the outcome. 

 

Best,

Mark

EdwardT
Community Specialist
Community Specialist

Hi SilasofNj,

 

I wanted to follow up and see if you are still in need of any help. Please let me know if you are still having any trouble from here, as I would be happy to take a closer look and assist you further.

 

Thanks,

Edward

Markjosephp
Community Specialist
Community Specialist

Hello SilasofNj,

 

I'm checking in to make sure that you've seen our response. If you have any further questions or concerns, please let us know before we lock this thread in 24 hours.

 

Regards,

Mark