08-24-2022 10:45 AM
Wondering if its even possible to use this Nest Thermostat with our VERY old furnace. We've ran a 3 wire down to the furnace which does have a fan and power terminal. I've been reading that the nest needs at least 3 things to function properly, which are basically heating control, common or constant power and fan (I think). So we bought a furnace 3 wire and ran it to the furnace, but I have no idea how/where to hook it up, if it's even possible. I've got 2 photos attached here. 1 photo is of the power terminal on the furnace and the other is the fan control (which has power running from the terminal on the furnace). We have a 2-way switch upstairs (separate from old thermostat) that when flipped, runs only the fan.
Any ideas would be much appreaciated!
08-29-2022 10:19 PM
Hi codyecp,
Thanks for reaching out. It will be best that your furnace will be physically checked by a Nest Pro. You can use this link to locate a Nest Pro in your area.
Regards,
Jennifer
09-01-2022 10:22 PM
Hi codyecp,
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
09-03-2022 03:50 AM
Hi,
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