Locate the battery compartment on your model and open it. Most Honeywell models will have their battery compartment close to the bottom of the machine. Open the battery compartment and source some new batteries. If you don't know what type of batteries you have, take a look inside the battery compartment. Get the same type (and number) of.. Changing the battery in a Honeywell thermostat requires basic tools. A small screwdriver and fresh AA or AAA batteries will suffice. Ensure you follow the manual for safety and accuracy. Changing the battery in a Honeywell thermostat is a straightforward task. However, having the right tools can make the process smoother and quicker.
1. In order to change the battery in a Honeywell Proseries thermostat, you typically need to remove the thermostat's faceplate. However, it is important to note that not all models have removable faceplates, so it's essential to consult the specific user manual for your model before attempting to change the battery. 2.. Battery Location: 1000 Series: AAA: 2: Under the cover plate: 2000 Series: AAA: 2: Under the cover plate: 3000 Series : AA: 2:. The "Find A Pro" section of the Honeywell website helps find a qualified technician to assist with the problem.. How to Change the Battery in a Honeywell Thermostat; Honeywell Thermostat Battery Replacement.