DIY Check of Thermostat Settings and Batteries for Minnesota Homes

When Minnesota weather flips from chilly mornings to sunny afternoons, your thermostat is the traffic controller of your home comfort. If it’s set incorrectly—or worse, if the batteries are dead—you could be left with a furnace or AC that won’t kick on. A quick DIY check keeps your system running smoothly and avoids unnecessary service calls.

Step 1: Verify Your Thermostat Settings

• Mode Check: Make sure it’s set to Heat when temps dip, Cool in summer, and Auto for year-round balance.
• Fan Setting: Auto helps efficiency, while On keeps air circulating but can raise bills.
• Temperature: DOE recommends 68°F in winter and 78°F in summer for comfort and savings.

Local Tip: In Minnesota’s unpredictable fall, consider using programmable settings to warm the house in the morning and ease off during the day when the sun does some of the work.

Step 2: Change Thermostat Batteries

• Many thermostats run on AA or AAA batteries.
• Change them once a year—a good reminder is every fall when you check smoke alarms.
• Low or dead batteries can make your HVAC act like it’s broken when it’s just your thermostat.

Pro Tip: Keep a pack of fresh batteries in the same drawer as your furnace filter for easy seasonal maintenance.

Step 3: Reset or Calibrate if Needed

• If your thermostat screen is blank even after new batteries, reset it according to the manufacturer’s instructions.
• If rooms don’t feel as warm or cool as the setting suggests, calibration may be needed—something an HVAC pro can do quickly.

When to Call a ProIf your thermostat checks out but your furnace or AC still won’t run, the issue may be in the furnace, wiring, or blower system. That’s when it’s time to call Air Comfort Heating & Air Conditioning.

📞 Call (763) 753-6623 to schedule a service and keep your Minnesota home comfortable through every season.