5 min read • Updated October 2026 • By the CliQ Team — the team that created Blink
How do you change the batteries in an Emerson or White-Rodgers thermostat? Set the System switch to OFF, pull the thermostat straight off its wall plate (don't pry it), and swap in two fresh AA alkaline batteries at the back, along the top. Snap it back on and set the System switch where it was. Some smaller models have a battery door on the top edge, so they never leave the wall.
That covers most of the Blue line, which was sold as both Emerson and White-Rodgers. Below: the steps, how to tell which kind you have, what the low-battery warnings mean, and what to do if the screen stays blank.
How to Change the Batteries: 5 Steps
You need two AA alkaline batteries. No screwdriver.
- Set the System switch to OFF. Emerson's manuals say to do this before you swap batteries. There's no need to flip a breaker for a battery swap.
- Grip the thermostat on both sides and pull it straight toward you. The body snaps onto a base that stays screwed to the wall. Expect it to feel stiff. Pull evenly. Don't lever it with a screwdriver: the manual warns that forcing or prying the unit will damage it.
- Flip it over and find the batteries. On most models they sit at the back of the thermostat body, along the top edge.
- Swap in two new AA alkaline batteries. Match the + and – marks molded into the holder. Emerson recommends name-brand alkaline batteries.
- Line it up and press it back on until it clicks. Set the System switch back to Heat or Cool, then check that the clock is right.
That's the whole job. The short clip below shows step 2, the part people get stuck on.
Video by Chris Matlashewski via YouTube, January 2019. Not affiliated with CliQ.
In under a minute, a homeowner shows how it works. The unit feels rigid and like it might need a tool. It doesn't. He grips both sides, pulls the body straight off the base, changes the batteries, and presses it back on the same way.
Which Kind Do You Have?
Emerson and White-Rodgers are the same thermostats. White-Rodgers built the Blue line and sold much of it under the Emerson name. In 2023 that business became Copeland, and the White-Rodgers name stayed. So whichever logo is on yours, the steps are the same.
The one real difference is where the batteries are.
| What you see | Where the batteries are | Take it off the wall? |
|---|---|---|
| Small door with an arrow on the top edge (common on 2-inch display models, e.g. 1F82) | Behind that door | No. Pull the door the way the arrow points and lift it open |
| No door on the outside (larger display and touchscreen models, e.g. 1F95) | Back of the thermostat body, along the top | Yes. Pull the body straight off the base |
| Not sure | Check the top edge for a door first | Only if there's no door |
On door models, the polarity marks are printed inside the door. To close it, swing the door down while pulling in the direction of the arrow, then snap it into place.
White-Rodgers model numbers start with "1F," like 1F80, 1F82, or 1F95. Look for a label on the back of the thermostat body. Search that number with "manual" to get the exact instructions for your unit.
What the Low-Battery Warnings Mean
Blue thermostats warn you in stages, so a dead screen rarely comes out of nowhere.
- Half-full battery icon: about half the battery life is left. No rush.
- "Change" next to the battery icon: replace them now.
- Temperature suddenly 10 degrees off: on several Blue models, when less than about two months of battery life remain, the thermostat shifts your setpoint by 10 degrees on purpose (10 cooler in Heat, 10 warmer in Cool). It's a nudge to get your attention. You can set the temperature back by hand, but it shifts again within about two days until you change the batteries.
Leaving for the winter? Emerson's manuals say that if the house will be empty for more than three months and the low-battery icon is showing, replace the batteries before you go. A dead thermostat can't call for heat.
How often to change them: Emerson recommends every two years, whether or not you see a warning. On many Blue models, if you see a battery icon on the screen all the time, your thermostat runs on batteries alone. If it only appears when they're low, your thermostat is wired for power and the batteries are a backup.
Changed the Batteries and It's Still Not Working?
The screen is still blank
Check that each battery faces the right way and is seated firmly against the contacts. On a brand-new unit, make sure the paper battery tag is pulled out. Try a second set of batteries, since a fresh pack can still be dead. If your thermostat is wired for power, check the breaker and the furnace's power switch too. If the furnace itself won't start, here's how to rule out the thermostat.
The schedule runs at the wrong times
The clock is probably wrong. Emerson's manual for its 2-inch Blue models says the program stays in memory without power, but the clock time can be off afterward. Reset the time and day, and check AM and PM. This matters for your bill: the US Department of Energy says setting the thermostat back 7–10°F for 8 hours a day can save up to 10% a year on heating and cooling. A wrong clock moves those setbacks to the wrong hours. If the clock is right and the schedule still misbehaves, see why a programmable thermostat stops following its schedule.
It won't snap back on
Don't force it. Pull it off, check that no wire is bent outward from the base, and line the body up square with the base before you press. It should click on with light, even pressure.
Want to redo your schedule while you're at it? Our guide to programming any thermostat walks through it.
Done with the old batteries? The EPA says that in most communities, alkaline batteries can go in the household trash. Its recommendation is to recycle them or check with your local solid waste authority.
Thinking about replacing your thermostat instead?
See the CliQ Smart Thermostat →Frequently Asked Questions
What batteries does an Emerson or White-Rodgers thermostat take?
Blue models take two AA alkaline batteries. Emerson recommends name-brand alkaline. If you're unsure, check your model's manual to confirm.
How do I get an Emerson thermostat off the wall?
Grip it on both sides and pull it straight toward you. The body snaps off a base that stays screwed to the wall. Don't pry it with a screwdriver: Emerson warns that forcing or prying can damage the unit. Small models with a battery door on the top edge don't need to come off at all.
Why is my Emerson thermostat 10 degrees off?
The batteries are low. On several Blue models, when less than about two months of battery life remain, the setpoint shifts 10 degrees on purpose to get your attention. Change the batteries and set the temperature back.
How often should I change the batteries?
Emerson recommends every two years, or right away when "Change" appears next to the battery icon. If you'll be away for more than three months and the low-battery icon is on, change them before you leave.
Will I lose my schedule when I change the batteries?
Usually not. Emerson's manual for its 2-inch Blue models says the program stays in memory without power, but the clock may be wrong afterward. Check the time, the day, and AM/PM after every battery change.
Are Emerson and White-Rodgers thermostats the same?
Yes. White-Rodgers made the Blue thermostats and sold many under the Emerson name. Since 2023 the business has been part of Copeland, and the White-Rodgers brand continues. Battery steps are the same either way.
Sources
White-Rodgers — Blue Universal Touchscreen Thermostat 1F95-1277, Installation and Operating Instructions — PDF
White-Rodgers — Blue 2" Heat Pump Thermostat 1F82-0261, Installation and Operating Instructions — PDF
White-Rodgers — Blue Easy Set Thermostat 1F89EZ-0251, Installation Instructions and User Guide — copeland.com
Copeland — Copeland aligns its family of brands for the future — copeland.com
US Department of Energy — Programmable Thermostats — energy.gov
US Environmental Protection Agency — Used Household Batteries — epa.gov
Photo by Simon Gough via Pexels
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