How to Change Batteries in a Honeywell Thermostat

Chances are if you have a Honeywell thermostat, the batteries need to be replaced. If you’re not sure how to do that, don’t worry! This blog post will tell you everything you need to know. Replacing the batteries is a quick and easy process that shouldn’t take more than 5 minutes. So, if your thermostat isn’t functioning properly, or if it’s been a while since the last time you replaced the batteries, now is the time to do it. Keep reading for instructions on how to change batteries in a Honeywell thermostat.

How do you take the cover off a Honeywell thermostat?

A Honeywell thermostat is a programmable thermostat that allows you to set the temperature in your home according to your schedule. It can also be used to adjust the temperature when you are not home so that you save energy and money on your heating or cooling bill.

Most Honeywell thermostats have a digital display that shows the current temperature in your home, as well as the schedule that you have programmed into the thermostat. Some models also have a touchscreen display that makes it easy to navigate through the menus and set the temperature.

A Honeywell thermostat is powered by a battery. The battery powers the thermostat’s display and the internal clock. The thermostat will continue to function normally even if the power is lost, as long as the battery still has power. If there is a power outage, the thermostat will retain its programmed settings.

When it comes time to change the battery, the next thing you would want to do is inspect how do you take off the cover of a Honeywell thermostat so you can change the batteries.

Different models of Honeywell thermostats have different ways of taking the cover off. For example, there are Honeywell series that use a “push-in” system, where you push in on two tabs on either side of the cover and pull it off. There are models where you need to rotate it counterclockwise until it comes loose.

Some Honeywell model uses screws to hold the cover on, which you can remove with a screwdriver. If you have this thermostat model, here are a few general tips on how to remove the cover:

1. Look for any screws or bolts that need to be removed in order to take the cover off. In some models, these screws may be hidden under plastic caps. If your model has screws or bolts, be sure not to lose them.

2. Gently pry the cover off with a thin screwdriver or knife if there are no screws or bolts. Be careful not to damage any internal components of the thermostat, especially the circuit board. Damaging the circuit board can cause the thermostat to not work properly.

If you’re not sure how to take the cover off your specific model of Honeywell thermostat, you can find instructions online or in the thermostat’s manual. And if all else fails, you can always call Honeywell customer service for help.

Where is the battery in my Honeywell thermostat?

The location of the batteries in the Honeywell thermostat may vary from one model to another. For example, in Honeywell programmable thermostat, the batteries are located at the back of the device. In contrast, in a wireless thermostat such as those with color touch screen programmable thermostat, you will find them inside its door on the left side.

Some models may have a separate cartridge with batteries, and it can be replaced separately from the thermostat unit. To most Honeywell thermostats, the battery is located in the back of the thermostat. To access it, you will need to remove the cover plate. The cover plate is held in place by two screws at the top and two screws at the bottom. Once the screws are removed, you can slide the cover plate off of the thermostat. The battery is located in a compartment on the back of the unit.

If you’re not sure where the Honeywell thermostat batteries are located, it’s best to consult your instruction manual as your initial resort. If the manual is not available or may have been lost for some reason, you can always find it online by searching the model number of your thermostat together with the word ‘manual’. Your last solution would be to ask the manufacturer or contact a professional.

What kind of batteries should I use in my Honeywell thermostat?

It is very important to know the type of battery that your thermostat uses so you can buy the right one when it’s time for a replacement. Some digital and programmable models may require lithium batteries, while older manual ones need mercury batteries. The battery information can be found in the instruction manual of your thermostat. If you cannot find the manual, look for a sticker on the back of your Honeywell thermostat or consult a professional HVAC technician.

How do I change my thermostat battery?

You can follow these simple steps in replacing batteries in Honeywell thermostat.

Steps to change a battery in a Honeywell programmable thermostat:

-Turn off the power to your air conditioner or heater at the circuit breaker. If you don’t know where that is, it is best to ask for help from an electrician.

-Remove the thermostat’s cover plate by unscrewing the screws (There are usually two on the top and two on the bottom).

-Locate the battery compartment and remove the old batteries.

-Put in fresh new batteries making sure that they are facing in the correct direction as indicated in your instruction manual.

-Replace the cover plate and screw it back in place.

-Turn the power back on to your air conditioner or heater at the circuit breaker.

If you are unsure about how to do any of these steps, it is best to consult a professional HVAC technician.

How often should I change batteries in my Honeywell thermostat?

It is recommended that you change the batteries in your Honeywell thermostat at least once a year to ensure that it is working properly. If you notice that the screen displays low battery or if there are any changes in its performance, then it may be time to change them.

How can I tell if my Honeywell thermostat needs new batteries?

It is not always easy to tell when the batteries in your Honeywell thermostat need to be replaced. However, there are a few things you can look for which may indicate that it is time for a battery change:

-If the screen is constantly displaying low battery or if the thermostat shuts down unexpectedly, this means that the batteries need to be replaced.

-If the thermostat is not responding to your commands or seems to be working slowly, this may also be a sign that new batteries are needed.

-If you have had your Honeywell thermostat for more than a year and have never changed the batteries, it is probably time to do so.


Replacing the batteries in your Honeywell thermostat is an easy task that you can do yourself. However, if you are not comfortable doing it or have any concerns about changing them, then it may be best to hire a professional HVAC technician. They will be able to help you with this process and ensure that everything is working properly. Before starting this project, always consult your instruction manual to see where the battery compartment is located and get the specific instructions about your Honeywell thermostat.

About the author, Phil Borges

Phil Borges is a battery aficionado. He's written extensively about batteries, and he loves nothing more than discussing the latest innovations in the industry. He has a deep understanding of how batteries work, and he's always on the lookout for new ways to improve their performance.