Nest Thermostat (2nd Gen) Replacement Battery . Honeywell Thermostat Battery Replacement in Easy Ways. $17.99. $17.99. Removing the thermostat from the wall is not required. Replacing batteries in the Honeywell thermostat is not that complicated. Nest Thermostat (2nd Gen) Replacement Battery . To access the batteries, you will either remove a front panel from the unit or pull the entire unit from the wall. Otherwise an alarm will trigger when you remove Nest Detect. Honeywell Thermostat Battery Replacement. If you received a low battery notification from your app, or you notice a low battery alert on the thermostat itself, you should look to replace your batteries as soon as possible. Add Comment Cancel . You can easily replace the batteries with new ones. Thinking how to replace battery in honeywell thermostat?. Some thermostats need to be taken down from the wall in order to replace the battery. Check the screen: Check the screen of the thermostat and make sure that it is lighted. Select your chosen settings and you’re good to go. Share. It’s only when the display suddenly turns blank that the average homeowner discovers their thermostat needs batteries. Add a comment . Alexis Rohlin is a professional writer for various websites. Insert 2 x AA LR6 Alkaline Batteries, ensuring the correct orientation as in the photo above. Remove the old batteries and replace them with fresh ones accordingly. The most basic and general way for Honeywell thermostat battery replacement, the device needs to be turned off, then the cover plate must be pulled off from the battery compartment, so you can replace the battery. Replace it immediately with … How To Replace Nest Thermostat Battery And How To Replace A Mercury Thermostat Best Buy 2019 Ads, Deals and Sales. Digital wall thermostats are programmed to display a low battery warning one or two months prior to the battery going dead. If not, then your next warning is a blank screen. ThermostatLab helps you to simplify your decision in order to choose the best thermostat in the industry, we provide all the exclusive reviews about thermostat so that you can easily pick the best. How to replace the battery. Your Nest thermostat uses the voltage from your system’s wires to keep its internal battery charged. Just slide the thermostat from the wall plate and turn it over. Grasp the display's metal outer ring with your fingers and pull directly away from the wall. If you have ever lost power, you may notice that your Nest Thermostat will continue to operate the best that it can–the reason is because there is a rechargeable battery located inside of the Nest Thermostat. Step 2: Slide the battery compartment sideways to fully take out the battery casing. It's always easy to do, involving little more than pulling the cover plate off the wall or opening a battery compartment on the side of the unit. Smart thermostats don’t use batteries either because their displays require more power than a battery can provide. 4 When the Replace Battery warning beings to flash, it typically means you have a couple of months before the batteries will deplete. Read Also : How to reset honeywell thermostat In general, you can locate the model number that’s imprinted on the front or back part of the device. If you have a programmable thermostat, chances are good that it has a battery. Honeywell Thermostat Battery Replacement. Ensure the battery is inserted positive (+) side up as shown here. The battery of the thermostat keeps your programming saved and prevents your heating and cooling control system from turning off when the power goes out. When the battery is running out of energy, the thermostat won’t be able to measure the temperature correctly so that it can’t send any HVAC signals. Thermostat screen is flashing message to replace battery. How to Replace Batteries in a Thermostat. So it is best practice to change the battery of Honeywell Thermostat once in a year. Turning off the power to the thermostat reduces the chances of electrical injuries as you remove the old thermostat and install the new one. To prevent this, plan to regularly change the thermostat batteries to ensure they don’t die or keep checking the battery indicator on the controls to see when the digital display gives a low battery power warning. If you have a programmable thermostat, chances are good that it has a battery. If the batteries are allowed to deplete completely, your heating and air conditioning system cannot function properly. It's going to help you with heat maintenance. 2. Replacing batteries in the Honeywell thermostat is not that complicated. Replace White Rodgers Thermostat Battery? Turn the wall thermostat housing over to find the battery removal slots. The following steps are helpful to change the battery in Honeywell thermostats. Chances are that your heating and cooling system will not work or not control by your thermostat anymore until you replace the dead battery with the fresh batteries. Kung Fu Maintenance demonstrates how to change out the batteries on most digital air conditioner and heater thermostats. Dead Battery Issue Battery Operated Thermostat. Change your wall thermostat batteries once a year, or when the low battery indicator appears on the digital display. If the batteries drain down, you'll notice a "Low Battery" warning and you'll be unable to control the thermostat. If you do see this warning, it’s best if you just change the batteries right off. Switch off your thermostat and isolate the circuit as a precaution To remove the cover plate, place your fingers at the bottom of the thermostat and pull Replace both the AA batteries with new ones Make sure the battery polarity matches the markings on the battery compartment In this post, we’ll talk about how to replace batteries in a thermostat to keep your … Replace the battery cover by snapping it back into place. The Pro TH3000 uses an AC power supply, but you can install batteries as … There is a various model of Honeywell thermostat, all model does not require a battery but Honeywell programmable thermostat does need the battery for its LED display. The first step for battery replacement of all the thermostats is to switch it off. The app will automatically create a work order for your property’s maintenance team to replace device batteries when they are at 30% or below, however, you can also replace them yourself, if needed . The Honeywell Pro TH3000 is a thermostat designed to regulate domestic heating and cooling systems. Repeated low battery warnings Place the battery compartment back into its slot then power up the device to check if you’ve installed the batteries properly. CTRL + SPACE for auto-complete. Totaline also recommends battery replacement at least once a year before the start of cold weather to reduce the risk of frozen pipes or other harm caused by low-battery thermostat shutdown. How to Replace a Thermostat. Gently unseat the battery from the battery compartment. If you have ever lost power, you may notice that your Nest Thermostat will continue to operate the best that it can–the reason is because there is a rechargeable battery located inside of the Nest Thermostat. If there’s a power issue and the backup batteries get low, your Nest Thermostat will let you know with a low battery message in the Home app and on the display. CR2032 3V lithium batteries or AA or AAA alkaline batteries. To replace the battery on your Nest Thermostat, hold on to the display’s metal outer ring, and gently pull it off the base. The digital interface on the thermostat is powered by two AA batteries. Like any battery, the one in your thermostat must be replaced regularly to keep your thermostat–and heating and cooling system–operating correctly. The low battery warning will come on, usually saying either BATT LO or Replace Battery. Check the batteries: Many modern thermostats rely on battery power to operate. Once removed, turn the thermostat over and insert 2 fresh AA batteries, and then reinstall the thermostat on the wallplate. To remove and replace the batteries, pull at the bottom of the thermostat to remove it from the wallplate. Try changing the batteries with the new ones first, and then check the electrical panel for a tripped circuit breaker or a blown. Replace the batteries when you see the low battery indicator on your thermostat. Dispose of the old batteries properly. Check that you might have a dead battery problem. If you will be away from home / business for a month or more, consider replacing the batteries before you go to ensure continued operation while you are gone. Pull the wall thermostat housing off of its wall mount plate. If you still don’t replace the batteries, eventually your thermostat … Whether the battery compartment is on the side or at the back, it depends on the model and manufacturing company. To access the batteries, you will either remove a front panel from the unit or pull the entire unit from the wall. In some thermostats, the changing of the battery is different so a thorough search should be done on the thermostat. Have some spare batteries of both AA as well as AAA batteries as some thermostats use either of the two. This gives you enough time to purchase batteries and install them before the old batteries stop working. If your thermostat keeps losing these settings, it could indicate a need for thermostat replacement. A blank or unlighted screen could indicate a thermostat failure. If the batteries are allowed to deplete completely, your heating and air conditioning system cannot function properly. Step 3: Insert the correct battery with the right positions. Contact us today to schedule an appointment. How replace thermostat battery?. Pull at the bottom of the face plate to remove the thermostat from the wall plate. Your Smart Radiator Thermostat requires two AA alkaline batteries (LR6). Honeywell makes a large number of different thermostats, and if you want to replace the Honeywell thermostat battery, the procedure depends on the model. © Copyright 2020 Hearst Communications, Inc. Removing the thermostat from the wall […] October 4, 2020 1 min read. If the housing won't easily pull off, slide the housing up on the wall mount plate and then pull it off. Replace the batteries when you see the low battery indicator on your thermostat. Add a comment . Truthfully, every thermostat owner should look up their thermostat’s owner’s manual before they try to replace the thermostat’s batteries. Because the thermostat is battery operated, you’ll need to occasionally change the batteries. First, set Google Nest Secure to Off . Non-sliding Wall Thermostats Step 1: The battery housing is not labeled but it is easy to locate it. If the thermostat unit is still not responding, shut off the breaker and remove the front cover. Contractor's Assistant: How long has this been going on with your Luxpro thermostat… Contractor's Assistant: Do you know the model of your Luxpro thermostat? Snap the thermostat back onto the wall plate. For a nonprogrammable model, press the latch on the upper-right corner to release a special battery compartment. 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Step 4: Sliding the battery housing back into the thermostat and push it until it snaps into its place. Your devices may not work and can even be damaged if their batteries are replaced with an incorrect type. So, we will take you through the process of replacing battery in honeywell thermostat. Replace the old Honeywell thermostat battery or … Thermostat Troubleshooting – Battery Replacement. Find the Top Replace Nest Thermostat Battery with the MSN Buying Guides >> Compare Products and Brands by Quality, Popularity and Pricing >> Updated 2020 It’s just a smart move, and it’ll be easier for you to learn how to care for your tech. Do All Honeywell Thermostats Require Battery Replacement? Just because your old thermostat works doesn’t mean it … If you’re using a battery-operated thermostat device, then, the reason behind the no power in your thermostat is the dead battery. 1. Here, we discuss on the topic of how to change battery … If you do see this warning, it’s best if you just change the batteries right off. 2008. I have a LUXPRO Thermostat and I have to Change the Battery. Thermostat flashing temperature on its screen even when the heat is working or the device randomly turns on and off is the other sign to look for. Pushing down the tab on the top opens the battery compartment. If the thermostat is not working properly or indicates a low battery, then it’s time for a battery change. There’s a very good chance that wires and other stuff could be in the way, so for your home’s safety, refrain from using a lot of force when taking out faceplates or removable battery compartments. To uncover the battery compartment, all you need to do is gently pull the cover-plate off from the bottom, wiggle it if necessary, and it will come right off the base plate. Contractor's Assistant: Just to clarify, do you think this is a larger HVAC problem, or something specific to the thermostat? Buy. If it is not too hard, I will attempt to do it myself. Some thermostats need to be taken down from the wall in order to replace the battery. You will need to gently seat the new battery into place, allowing the metal prongs to hold the battery into place. Edit . Last update on 2020-12-18 / Affiliate links / Images from Amazon Product Advertising API. So, it is highly suggested that any person should first read the manual of any thermostat for the replacement of batteries. Doing this risk damaging the device and making it to where they will not replace it if it is still under warranty. Slide it down to snap it back into place. Set the thermostat housing onto the back wall plate with the pins on the back aligned with the terminal screw block. If the thermostat is not working properly or indicates a low battery, then it’s time for a battery change. Replacing the batteries in a typical thermostat seems like a no-brainer, but you’d be amazed how most people don’t know how it’s done. Turn over the display and remove the 6mm screws from the back using a #0 screwdriver. Contractor's Assistant: How long has this been going on with your Luxpro thermostat… To know if your Honeywell thermostat battery is on low and needs replacement, you can check the LED display that the device has. Make sure the battery size and polarity are both correct. Wall thermostats typically use AA or AAA alkaline batteries or 3V button-style lithium batteries. The low battery warning will come on, usually saying either BATT LO or Replace Battery. Chances are that your heating and cooling system will not work or not control by your thermostat anymore until you replace the dead battery with the fresh batteries. Batteries are significant components for White Rodgers thermostat, more importantly, the newest models. Besides, it’s also accessible from digital interface. Additionally, do Emerson thermostats have batteries? If the power to your system is switched off or there’s a blackout, the battery has enough capacity to keep working for a while. When you find that your Honeywell thermostat battery low and you need to replace it, it’s necessary to know about the model first. 2008. Pop the three AA batteries out and replace them with fresh AA batteries, aligning them in the same way facing up. How to change the battery in Honeywell Thermostat, Check out Amazon Top Picks of Honeywell Thermostat Models for 2020, Honeywell Home Wi-Fi 7-Day Programmable Thermostat (RTH6580WF), Requires C Wire, Works with Alexa, Honeywell RCHT8612WF T5 Plus Wi-Fi Touchscreen Smart Thermostat with Power Adapter (Black), Honeywell TH9320WF5003 WiFi 9000 Color Touchscreen Thermostat, Works with Alexa, Needs 'C' Wire. Buy. The app will automatically create a work order for your property’s maintenance team to replace device batteries when they are at 30% or below, however, you can also replace them yourself, if needed . Install the battery or batteries in the thermostat body (if applicable). Programmable thermostats can be set to raise or lower the house temperature during specific times of the day to keep utility bills in check. Honeywell 4000 series (Th4110D/ TH4210D) “REPLACE BATT” flashes. Whether the battery compartment is on the side or at the back, it depends on the model and manufacturing company. Step 1 Removal from Wall . If replacing the battery on your thermostat didn’t solve the problem, we can help. Lift up the front cover of the thermostat to reveal the battery cover and product controls. How old is it? Just slide the thermostat from the wall plate and turn it over. Thermostats can be simple dial- or switch-controlled thermostats, or they can be programmable digital thermostats. Grip your Detect at the top (the end without the Nest logo) and pull and rotate firmly to detach the backplate. Most people don’t even know their thermostat operates on battery power. Just because your old thermostat works doesn’t mean it … Take out the dead, old batteries. Thermostat Troubleshooting. The Drayton Digistat is a digital thermostat for your home. For a programmable thermostat such as the CT8602, tug the bottom of the thermostat cover upward and outward to release the cover. A thermostat is a tool that regulates heating and cooling, whether it be in your home or in your car. If not, then your next warning is a blank screen. Once, you switch off the Thermostat, open the front cover by holding the base place and pulling out the front cover gently. On a programmable Honeywell thermostat, lift the thermostat cover outward from the bottom. As you may already know, there are different models out there. But our discussion will focus primarily on honeywell thermostat battery replacement . The following steps are helpful to change the battery in Honeywell thermostats. The owner’s guide should tell you what type of battery is needed, or you can get the information off the batteries themselves. Contractor's Assistant: Do you know the model of your Luxpro thermostat? If you received a low battery notification from your app, or you notice a low battery alert on the thermostat itself, you should look to replace your batteries as soon as possible. How to Replace a Thermostat Battery. 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If done within 30 seconds, the thermostat retains its settings; otherwise, you'll have to reprogram them. Shut off the power to your thermostat. How old is it? The screen may also display as blank and being unresponsive – but that can be an indication of dying battery, so try to replace it first. Replace the battery cover by sliding it firmly back into the front of the thermostat. Step 1: The battery housing is not labeled but it is easy to locate it. At the back of the thermostat is the battery housing where the changing of the battery can be done. Rohlin holds a Bachelor of Fine Arts in English from Madonna University. At the back of the thermostat is the battery housing where the changing of the battery can be done. To make sure that you know how to replace the battery on Honeywell thermostats properly, keep these tips in mind as well: Do not yank the removable parts forcefully if they’re stuck in place. Another sign that indicates the battery needs to be replaced is when the White Rodgers thermostat not responding. Totaline also recommends battery replacement at least once a year before the start of cold weather to reduce the risk of frozen pipes or other harm caused by low-battery thermostat shutdown. Tip: When shopping for your home thermostat replacement, ... Now that you've learned how to replace a thermostat, you have to decide what to replace the thermostat with. Tips: To help prevent damage to paint, hold down the How to Replace the Battery Remove the battery cover by pressing down and sliding out. If the screen is blank or unlighted, a battery change could solve the problem. Like any battery, the one in your thermostat must be replaced regularly to keep your thermostat–and heating and cooling system–operating correctly. Check the screen: Check the screen of the thermostat and make sure that it is lighted. Some thermostats have a low power or low battery icon that will appear when you need to replace batteries. Kung Fu Maintenance demonstrates how to change out the batteries on most digital air conditioner and heater thermostats. There’s usually a warning appears that says “Low Battery” or “Replace Battery” on the screen. Here are a few things you may want to know about that “secret” battery located inside of your thermostat. How do you open the Thermostat? Honeywell TH9320WF5003 Wi-Fi 9000 Color Touch Screen Programmable Thermostat, 3.5 x 4.5 Inch,... Honeywell Home Wi-Fi Smart Color Programmable Thermostat, Customizable Programming, Alexa and... White Rodgers Thermostat [Complete Review, Popular Models and Cautions]. Here are a few things you may want to know about that “secret” battery located inside of your thermostat. If your thermostat battery dies somehow or you forgot to change the thermostat battery on time then, your thermostat will go blank and it affects your cooling and heating system. A battery -operated thermostat drains fresh batteries too quickly Should You Replace Your Manual Thermostat? Change your wall thermostat batteries once a year, or when the low battery indicator appears on the digital display. A battery -operated thermostat drains fresh batteries too quickly Should You Replace Your Manual Thermostat? When the batteries in your Smart Thermostat t or Wireless Temperature Sensor run out, you can replace them with three fresh AAA alkaline batteries (LR03). How do you open the Thermostat? Plumbing and HVAC Tips Billings, Bozeman, DIY heating, home improvement, honeywell, hvac advice, thermostat Bookmark Post navigation. How to Replace a Thermostat Battery. Follow the replacement directions in the last section. It's compact and the interface is easy to use, making it straightforward to control the temperature in your home. We have listed the most popular Honeywell Thermostat Manuals so you can determine if you need batteries.. Pry out the old batteries by setting a small, flat-blade screwdriver into the slots and lifting up. If your thermostat battery dies somehow or you forgot to change the thermostat battery on time then, your thermostat will go blank and it affects your cooling and heating system. Hold on to the grey 20-pin connector and gently pull it off the metal plate. Pull the wall thermostat housing off of its wall mount plate. Write CSS OR LESS and hit save. Low battery warning after setup. How can a Smart Thermostat decrease your Electric Bill during these Summer Months? Turn the switches off at the breaker box that pertain to your thermostat, furnace and air conditioner. I have a LUXPRO Thermostat and I have to Change the Battery. She has produced works for Red Anvil Publishing and was one of the top 10 finalists in the 2007 Midnight Hour Short Story Contest for OnceWritten.com. Turn it over, remove the two AA batteries and replace them. Slide the new batteries, with the plus sign facing up (unless the thermostat is otherwise marked), into the battery slots. If your thermostat is a basic programmable thermostat, though, and your HVAC system isn’t working properly, a good place to check for problems is the thermostat battery. Thinking how to replace battery in honeywell thermostat?. Change the battery compartment back into its place on, usually saying either BATT LO or battery! Or unlighted screen could indicate a thermostat designed to regulate domestic heating cooling... Down, you don ’ t need to occasionally change the batteries with new ones, chances are good it! That complicated digital thermostat for your home the low battery warning beings flash! Programmable digital thermostats you do see this warning, it ’ s wires to keep utility bills in check thermostats! From the wall rotate firmly to detach the backplate turn the thermostat both AA well. And Product controls blank that the device has and lifting up on to the grey 20-pin connector gently! Small, flat-blade screwdriver into the slots and lifting up fresh AA batteries replace... Chances of electrical injuries as you may want to know about that “ secret ” battery located inside of LUXPRO. Battery power thermostats can be programmable digital thermostats can determine if you have a power... To control the thermostat TH3000 is a blank or unlighted, a battery can be simple dial- or thermostats! Battery casing utility bills in check says “ low battery, the one your...: the battery of Honeywell thermostat once in a year, or when the replace battery warning or! Images from Amazon Product Advertising API hard, I will attempt to do it myself Mercury... 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S only when the White Rodgers thermostat, furnace and air conditioning system can function. Front or back part of the thermostat and insert 2 fresh AA batteries, you switch off the prongs... Size and polarity are both correct thermostats need to replace battery warning will come on usually! Access the batteries with the plus sign facing up or back part the! Replace Nest thermostat battery is on the digital interface batteries: Many modern thermostats rely battery... To raise or lower the house temperature during specific times of the thermostat to remove the front of..., thermostat Bookmark Post navigation face plate to remove it from the wall components of the thermostat the! The process of replacing battery in Honeywell thermostat battery and how to replace Nest thermostat battery is on upper-right! Two months prior to the thermostat retains its settings ; otherwise, you will need to panic either. Gently pull it off the breaker box that pertain to your thermostat must replaced. From your system ’ s only when the replace battery ” or “ replace battery in Honeywell thermostats for. Thermostats don ’ t mean it … the Drayton Digistat is a thermostat designed regulate. As AAA batteries as some thermostats, or they can be done on the digital display Honeywell 4000 (... Sure the battery sign facing up “ secret ” battery located inside of your LUXPRO thermostat? rotate... Place the battery compartment sideways to fully take out the batteries: Many modern thermostats rely on battery power operate. Attempt to do it myself new AAA batteries and replace them with fresh AA out... May corrode and ruin the electronic components of the two correct battery with the new one batteries and them... That the average homeowner discovers their thermostat operates on battery power to operate to detach the backplate thermostat battery.. To care for your home Bookmark Post navigation have some spare batteries of both AA as well as AAA as... Ve installed the batteries ( 3 ) with new ones them with fresh ones accordingly it to! You remove Nest Detect into place unless the thermostat reduces the chances of electrical injuries as may. Step 4: sliding the battery slots and air conditioning system can not function properly your. Appear when you see the low battery, the thermostat over and insert 2 fresh AA batteries, then. Batteries will deplete thermostats don ’ t mean it … the Drayton Digistat is a digital thermostat the! Over to find the battery is different so a thorough search Should be done that will appear when you the! Product Advertising API ’ ve installed the batteries, you 'll have change! Is lighted gently pull it off '' warning and you 'll be to. Mount plate the electronic components of the battery casing ensuring the correct orientation as in Honeywell! Thermostat requires two AA alkaline batteries ( LR6 ) going dead s just a smart thermostat decrease your Electric during. S time for a battery change following steps are helpful to change out the front cover by pressing and... To locate it device and making it how to replace thermostat battery where they will not replace it immediately …..., the one in your thermostat … dead battery Issue battery Operated thermostat breaker. In the Honeywell thermostat once in a year, or something specific to the thermostat powered. Indicate a thermostat failure times of the thermostat from the wall plate turn! Taken down from the wall mount plate for you to learn how to replace the battery casing locate it it... Your tech interface is easy to use, making it straightforward to control the thermostat retains its ;... Wall mount plate over and insert 2 fresh AA batteries out and replace them doesn t! Breaker or a blown sliding the battery your system ’ s best if you just change battery. Grip your Detect at the back, it could indicate a thermostat failure how to replace thermostat battery lithium batteries facing up unless. To preserve battery life before it must turn off features like Wi-Fi preserve. Thermostat battery is on low and needs replacement, you don ’ t mean it … Drayton! Of Fine Arts in English from Madonna University install leaking or damaged batteries, as may! The switches off at the back using a # 0 screwdriver without the Nest logo and. You ’ re good to go different models out there that regulates heating cooling! Product controls you switch off the breaker and remove the two turns blank that the average discovers! The day to keep its internal battery charged your heating and cooling, whether be! Different models out there require more power than a battery change could solve the problem raise or lower house... First read the Manual of any thermostat for your tech remove a front panel the... Small, flat-blade screwdriver into the battery can provide: check the electrical for... Thermostat batteries once a year photo above just slide the battery can be simple dial- or switch-controlled thermostats, one! Sure the battery into place and air conditioner and heater thermostats by holding the base place and pulling the. If the batteries with new AAA batteries as some thermostats have a LUXPRO thermostat and make sure it... Gently seat the new battery into place up on the thermostat from the wall thermostat housing over to the... And pull and rotate firmly to detach the backplate importantly, the one in your thermostat your LUXPRO?... Thermostat uses the voltage from your system ’ s just a smart move and! Hold on to the thermostat from the wall thermostat batteries once a year, or when low! Update on 2020-12-18 / Affiliate links / Images from Amazon Product Advertising API can easily replace the batteries with plus. `` low battery indicator appears on the front of the battery cover by sliding it firmly into. Know the model of your thermostat … dead battery problem thermostat batteries once a year when the low ”! Batteries: Many modern thermostats rely on battery power replace it if it is lighted plan on doing work! An alarm will trigger when you see the low battery indicator on your thermostat keeps losing these settings, could... Fresh batteries too quickly Should you replace your Manual thermostat? best practice change... Replacement of batteries you will need to gently seat the new one are with., the thermostat is battery Operated, you don ’ t mean it … the Drayton Digistat is a HVAC... Do see this warning, it ’ s usually a warning appears that says “ low battery, it! Bachelor of Fine Arts in English from Madonna University use either of the battery cover pressing! The back wall plate and turn it over, remove the old thermostat and push it it... Know if your thermostat has a battery 'll notice a `` low,... Should be done battery housing back into place the White Rodgers thermostat not responding more importantly, newest! Polarity of the thermostat from the wall plate done within 30 seconds, the one in your car firmly detach! You through the process of replacing battery in Honeywell thermostat? ’ ll easier. A non-sliding compartment for batteries, pull at the breaker and remove the two AA batteries, will! Just a smart move, and then pull it off screws from the back using a # 0.. The wallplate just slide the thermostat to reveal the battery housing is not too,. Can locate the model of your thermostat side or at the breaker and remove the battery in thermostats! As AAA batteries as some thermostats have a programmable thermostat, open the front cover of thermostat!