12-05-2021 06:42 PM
Hi, I have York HVAC system and my thermostat shows R, C, A+ and B- wires. Picture attached. Is my system compatible? I opened HVAC board and it shows same wires and labels. If rewiring required, do you who can come and estimate the cost first?
12-06-2021 07:07 AM
Hello @Raks,
Thanks for reaching out. Please use the following compatibility checker to check if your system is compatible with Nest thermostats: Compatibility Checker.
Hope that helps!
12-06-2021 07:52 AM
Thank you for your reply. I already used the compatibility checker link and it doesn't list the wiring A+ and B- which is why I was checking here if someone knows its compatible?
12-06-2021 07:58 AM - edited 12-06-2021 07:59 AM
Hello @Raks,
Taking a closer look, there is a chance your system may not be compatible with the Nest thermostat at this time. I would recommend having a Nest Pro come out and take a closer look. They would be able to check for compatibility, install the device and ensure everything is working properly.
Please let me know if you have any other questions from here.