How To Change Battery In Honeywell Thermostat Pro Series

How to Change Battery in Honeywell Thermostat Pro Series

If you have a Honeywell Thermostat Pro Series and you notice that it’s not working as it should, the first thing you should check is the battery. The Honeywell thermostat is designed to run on batteries, and if the batteries are dead, it won’t function correctly. In this article, we will explain how to change the battery in your Honeywell Thermostat Pro Series.

Step-by-Step Guide to Changing the Battery in Your Honeywell Thermostat Pro Series

Step 1: Turn off your Honeywell Thermostat Pro Series
Before you start, you’ll need to turn off the thermostat. To do this, go to the thermostat, and set the system to “off.” You should also turn off the power supply to your thermostat from the circuit breaker.

Step 2: Remove the Cover
Use a small screwdriver or a coin to loosen the screw that holds the cover in place. Once the screw is loose, you’ll be able to remove the cover.

Step 3: Remove the Old Batteries
Inside the thermostat, you’ll see the batteries. You need to remove the old batteries and dispose of them safely. Make sure that you store the old batteries separately from the rest of your garbage.

Step 4: Insert the New Batteries
Take two new AAA alkaline batteries and insert them into the thermostat. Make sure that the positive and negative terminals of each battery are inserted correctly. You can check the polarity diagram on the battery box to ensure that you are inserting them correctly.

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Step 5: Replace the Cover
Once you have inserted the new batteries, replace the cover and screw it in place. Make sure that the cover is secure and that the screw is tight.

Step 6: Turn on the Power
Finally, turn the power supply back on from the circuit breaker and switch the system back on from the thermostat. You should see the display turn on, indicating that the batteries are working correctly.


Q: How often should I change the batteries in my Honeywell Thermostat Pro Series?
A: Generally, it’s recommended that you change your batteries once per year. However, if you live in an area with extreme temperatures, you may need to change them more frequently.

Q: What type of batteries should I use in my Honeywell Thermostat Pro Series?
A: The Honeywell Thermostat Pro Series uses two AAA alkaline batteries. Ensure that you choose reliable and durable batteries to maintain consistent performance.

Q: What can I do if my Honeywell Thermostat Pro Series still doesn’t work after changing the batteries?
A: If you have replaced the batteries and the Honeywell Thermostat Pro Series still isn’t working, then it may indicate an issue with the thermostat. Try resetting the thermostat by turning off the thermostat and the circuit breaker for 30 seconds. If the problem persists, contact a professional to diagnose the issue.

Q: Can I use rechargeable batteries in my Honeywell Thermostat Pro Series?
A: Honeywell doesn’t recommend using rechargeable batteries in their thermostats. If you choose to utilize rechargeable batteries, ensure that they match the polarity specifications of an alkaline battery to maintain optimal performance.

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In conclusion, the Honeywell Thermostat Pro Series is a crucial device used in regulating and managing our home’s temperature. The steps outlined above provide a seamless and easy-to-follow process for changing the batteries, ensuring an efficient working thermostat. Always ensure that you use high-quality batteries and dispose of the old ones responsibly. Proper battery maintenance is essential for more prolonged thermostat productivity, making it imperative to understand how to replace batteries when needed.

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