“My Honeywell thermostat has three wires (RWB) labeled 1,2,3. The Nest was not compatible — will this one be?”

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• Probably not. Consult with your hvac company.

  Answered by Jonman 6 years ago

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• From my understanding and from watching the video they provided, you will need that 4th wire and plus if you have a older model home. Look at the Picture that is attach.

  Answered by Tonk 7 years ago

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• It sounds like you are purchasing a new thermostat, mine connected with no issues to my wi-fi. Alexa can adjust the thermostat.

  Answered by John 7 years ago

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