Nest Compatibility

[KyleR]

What are the U1 wire connections (there are 2, orange and black) on my Honeywell thermostat that I am trying to trade out for a new Nest Learning Thermostat.

I don't see the same U1 ports on the Nest. Does this mean systems are incompatible? Photo 1 is the Honeywell, Pic 2 is the Nest

Old HoneywellNew Nest Learning Thermostat

[Thaler]

The Honeywell "standard" wiring uses U connection to control the Humidifier, Dehumidifier. Check with your hardware units and select the one which you have on the Online compatibility checker tool 

[EdwardT]

Hi folks,

@Thaler, thanks for the help!

@KyleR, how's it going with your Nest Thermostat? Were you able to wire it?

Thanks,

Edward

[EdwardT]

Hi KyleR,

It's me again. I wanted to check back in to see if you have other questions and concerns. Feel free to let me know if you do. 

Thanks,

Edward

[MelbaDT]

Hey folks, 

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

Best, 

Melba