I just moved into a new house and wanted to add a Nest thermostat. When I removed the cover of the existing thermostat the wiring was not listed on the compatibility sheet. Does anyone know if a Nest Thermostat will work with the existing system?
Thanks for posting in the Google Nest Community forum. I appreciate you being interested in the Nest Thermostat. However, you have a high voltage system which isn't compatible with any Nest Thermostats. In some cases, it is possible to make a high voltage system Nest-compatible by contacting a local HVAC professional and have them install a step down transformer to 20 - 30 V. You can visit this link for your reference.
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.
Due to inactivity, we'll go ahead and lock this thread in 24 hours. We'd be glad to help you further so if you still need assistance, feel free to start a new thread.
