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

Your furnace keeps your home warm during the frigid winter months, so it’s annoying when something isn’t quite right. One routine complaint is a furnace that continuously kicks on and switches off all the time. This issue is known as short cycling. It stresses equipment and could result in expensive repairs or even earlier than normal breakdowns. 

Short cycling can happen for several reasons. Before you schedule furnace repair, review the potential causes and how to fix the problem. 

1. Dirty Air Filter 

The HVAC filter traps airborne dust, hair and other pollutants that could wreak havoc on furnace. If you don’t get a new filter often enough, it can become dirty and decrease the airflow. When this takes place, a safety mechanism shuts off the furnace to stop getting too warm. Pull Out the filter, and if it’s dirty, replace it. From here on out, change the filter every 30 to 90 days to prevent your furnace from short cycling. 

2. Blocked Air Vents 

A dirty filter isn’t the only thing that can reduce airflow and overheat your furnace. Walk around your house and check for closed or blocked air vents. For adequate system balance and performance, keep all registers open, even in unused rooms. 

3. Dirty Blower Wheel 

The furnace blower has blades that push air through the ductwork. If they are caked with dirt, the air won’t move properly, creating overheating and short cycling. Routinely putting in a new the filter is the easiest method to prevent a dirty blower wheel. If the blades are already dirty, schedule furnace maintenance to have them cleaned. 

4. Faulty Thermostat 

Inspect your thermostat next. This is the brain of your HVAC system and gives the furnace instructions on what to do. Ensure the thermostat is in heating mode and auto fan with the desired temperature shown on the screen. Try replacing the batteries. Also, check whether the thermostat is in full 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. Soot-Covered Flame Sensor 

The flame sensor switches off the gas valve when no burner flame on. The sensor can’t detect the flame if it’s sooty, so the gas switches off sooner and the furnace shuts off. Leave the adjustment of repairing a dirty flame sensor to a pro like Stevenson Service Experts. 

6. Oversized Furnace 

When it involves heating and cooling equipment, bigger isn’t always better. An oversized system adds warmth to your house too fast, leading to unpleasant temperature swings and short cycling. The only way to resolve this situation is to do new furnace installation

If you attempt the resolutions we went over here and nothing has changed, it’s time to reach the pros at Stevenson Service Experts. We’ll review the situation, figure out the cause, and provide the necessary repair. Our goal is to restore indoor comfort, energy efficiency and dependable furnace performance for the rest of the season. And our services are upheld by a 100% Satisfaction Guarantee for a year.* For more details about furnace short cycling, or to book HVAC repair, reach us at 614-334-3192 now! 

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*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. 

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