Please watch this video for a quick visual guide on how to find your thermostat model number:
The fastest way to see your thermostat model number is to look for it on your thermostat ID card. If you do not have a product ID card, the fastest way to find the model number is by removing the thermostat from the wall-plate. Depending on your model, the thermostat will separate from the wall-plate with moderate pressure or there might be small screws holding the device in place. After removing the thermostat, flip it over and look for the model number, which is printed on the back of the case, starting with the group of letters mentioned above.
If the thermostat is battery operated and the batteries are accessed from the front of the thermostat, please check the area around the batteries. You can also check this list of our battery operated thermostats to find your model number.
If your thermostat has a mechanical clock, the model number is on a sticker on the horizontal surface above the clock.
For more information on the Honeywell heating and cooling systems, please click here to see a list of instructional videos.
If we weren't able to answer your question please visit Help & Support