How To Change Battery In Honeywell Thermostat So Quickly

In this article, we will provide you with a step-by-step guide on how to change the batteries on your Honeywell thermostat. Maintaining your thermostat is crucial for ensuring efficient heating and cooling in your home or office.

5 Easy Steps to Change Battery in Honeywell thermostat

Option 1: Removing the battery pack to replace the batteries

Step 1: Locate a little tab on the top right side of your thermostat and push it down and pull that plate holding the battery pack out and the whole battery pack will slide right out as seen in the second picture below.

Step 2: Behind the battery pack you will see two AA batteries.  Pull them out of the battery pack. Some may be difficult to remove and you may need a flat screw driver to pop them out but for most it will be easy.

Step 3: Once you have the old battery out, put in the new batteries but be careful to insert them correctly. The positive side should face the positive side and the negative to face the negative.

( you are going to see the the little mark inside the battery compartment for the signs)

Step 4: When you have inserted the new batteries, rotate the battery back  and put it back  from the bottom until  you hear it snap.

Step 5: That’s it, you are set.

Option 2: Removing the thermostat from wall to replace batteries

Here is an alternative method if you can not pull the battery pack out. You will pull the entire thermostat assembly off the wall then follow the same procedure to remove and replace the batteries within your own hands.

If you want to keep the programs on the thermostat you are going to do it really fast or you’ll lose all current settings.

Read also: Honeywell Thermostat Not Working After Battery Change [Fixed]


Step 1: Take the thermostat off the wall.  By using the pins on the top the thermostat should  pop out easily . Just don’t pull it hard to avoid damaging the unit.

Step 2 :Turn the thermostat to the  other side and remove the old batteries to replace them with the new ones. Ensure to insert them correctly. See the mark at the battery compartment for the positive and negative.

Step 3: Time to take back the thermostat ensure the line of the little pins align with the ones on the wall. Give it a little push on the wall place until you hear it snap in place.

Read also: How to Reset Honeywell Thermostat Without a Reset Button

Troubleshooting a honeywell thermostat not working after battery change

If your Honeywell thermostat is not working after a battery change, here are some troubleshooting steps you can try:

Check if the battery is installed correctly. Make sure the positive and negative ends of the battery are inserted correctly. Also, make sure the battery compartment is clean and free of debris.

Check if the thermostat is properly seated on its base. Ensure that it is firmly in place and properly mounted on the wall.

Read also: Honeywell pro series thermostat not cooling

Check if the circuit breaker or fuse for the HVAC system is tripped or blown. If it is, reset the breaker or replace the fuse.

Check if the thermostat is in the correct mode. Make sure it is set to the correct mode (heating, cooling, or off) and the temperature is set correctly.

Check if the wires are connected properly. Make sure the wires are properly connected to the thermostat and HVAC system.

Read also: How To Replace Battery In Nest Thermostat Effortlessly In Seconds


Will schedule and programs be lost after battery change

It depends on the amount of time you take to replace the batteries. You will retain all programming and settings if you  replace  the batteries within about 10 seconds.

Read also:How to Lock and Unlock Honeywell ProSeries Thermostat Without Pin

Final thoughts

The two methods for changing batteries in honeywell thermostats are pretty much the same on thermostats that use batteries. There are a few things to avoid when you are trying to change your thermostat batteries

One thing to Avoid is pulling the thermostat too hard from the wall. Instead look around, there is usually something on top or on the sides to press so your thermostat can easily pop out. See this guide on how to remove a honeywell thermostat cover from the wall.

Read also: Why Is My Nest Thermostat Buzzing? [Quick Fix]

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