6 Reasons Why Your Furnace Keeps Turning Off and How to Resolve It 

Your furnace keeps your house cozy during the frigid winter months, so it’s frustrating when something is off. One common issue is a furnace that continuously turns on and turns off again. This problem is known as short cycling. It stresses equipment and might lead to expensive repairs or even premature failure. 

Short cycling can be the result of for a few reasons. Before you request furnace repair, research the possible causes and how to resolve the issue. 

1. Dirty Air Filter 

The HVAC filter attracts airborne dust, hair and other substances that could wreak havoc on furnace. If you don’t get a new filter regularly, it can become dirty and decrease the airflow. When this takes place, a safety mechanism switches off the furnace to avoid overheating. Inspect the filter, and if it’s dirty, get a new one. Going forward, replace the filter every 30 to 90 days to keep your furnace from short cycling. 

2. Clogged Air Vents 

A dirty filter isn’t the only issue that can lower airflow and overheat your furnace. Walk around your house and look for shut or blocked air vents. For proper system balance and performance, keep all registers open, even in unoccupied rooms. 

3. Dirty Blower Wheel 

The furnace blower has blades that move air through the ductwork. If they are caked with dirt, the air won’t move correctly, leading to overheating and short cycling. Frequently replacing the filter is the simplest approach to avoid a dirty blower wheel. If the blades are already dirty, request furnace maintenance to have them cleaned. 

4. Faulty Thermostat 

Check your thermostat next. This is the core of your HVAC system and gives the furnace instructions on what to do. Double-check the thermostat is on heating mode and auto fan with the desired temperature showing on the screen. Try putting in new batteries. Also, check whether the thermostat is in direct sunlight or near a heat source that could affect the temperature reading. If you use a smart thermostat, go to the manufacturer’s site for troubleshooting guides. 

5. Sooty Flame Sensor 

The flame sensor is responsible for turning off the gas valve when no burner flame going. The sensor can’t find the flame if it’s coated in soot, so the gas switches off prematurely and the furnace shuts off. Leave the work of repairing a dirty flame sensor to an Expert like Teays Valley Service Experts. 

6. Oversized Furnace 

When it involves heating and cooling equipment, larger isn’t always right. An oversized system warms up your residence too fast, leading to unpleasant temperature fluctuations and short cycling. The only way to resolve this issue is to request new furnace installation

If you try the resolutions we mentioned here and nothing has changed, it’s time to contact the professionals at Teays Valley Service Experts. We’ll review the situation, figure out the cause, and provide the necessary repair. Our aim is to bring back indoor comfort, energy efficiency and dependable furnace performance for all season long. And our services are backed by a 100% Satisfaction Guarantee for a year.* For more details about furnace short cycling, or to request HVAC repair, reach us at 304-760-5088 now! 

— 

*Not applicable to the Advantage Program. See your signed Advantage Program Agreement for full details and exclusions. 100% Satisfaction Guarantee is subject to certain restrictions and limitations as set forth in the applicable Terms and Conditions. 

Savings For You

See All Offers Here >
Service Experts Advantage Program logo

Make No Payments for 30 Days!

  • Upgrade to Worry-Free Comfort with the Advantage Program and make NO payments for 30 days!
maintenance icon

$50 OFF HVAC Tune-up Special

There’s no reason to skip your seasonal maintenance that saves energy and helps ensure your air conditioner and heater will work reliably all season long.

  • Regularly $129, now only $79
  • Save up to 30% on energy bills
  • Written Expert Service Guarantee

© 2023 Service Experts, Service Experts Heating & Air Conditioning, and the Service Experts logo and design are registered trademarks of Service Experts LLC and used under license by SE Canada Inc. All Rights Reserved. *Not applicable to the Advantage Program. See your signed Advantage Program Agreement for full details and exclusions. 100% Satisfaction Guarantee is subject to certain restrictions and limitations as set forth in the applicable Terms and Conditions.