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

Your furnace keeps your house warm during the frigid winter months, so it’s disconcerting when something is off. One frequent issue is a furnace that continually turns on and turns off again. This problem is known as short cycling. It stresses your furnace and could 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 getting too warm. Check 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. Obstructed Air Vents 

A dirty filter isn’t the only issue that can reduce airflow and overheat your furnace. Walk around your home and look for unopened or crowded air vents. For adequate system balance and performance, keep all registers open, even in unoccupied rooms. 

3. Dirty Blower Wheel 

The furnace blower has blades that distribute air through the ductwork. If they are dirty, the air won’t flow correctly, causing overheating and short cycling. Regularly replacing the filter is the simplest method 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 instructs the furnace on what to do. Make sure the thermostat is on heating mode and auto fan with the desired temperature showing 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 have a smart thermostat, go to the manufacturer’s site for troubleshooting tips. 

5. Sooty Flame Sensor 

The flame sensor switches off the gas valve when no burner flame going. The sensor can’t detect the flame if it’s coated in soot, so the gas switches off too soon and the furnace shuts off. Leave the work of repairing a dirty flame sensor to a professional like Broad Ripple Service Experts. 

6. Oversized Furnace 

When it involves heating and cooling equipment, larger isn’t always best. An oversized system warms up your house too fast, causing intolerable temperature swings 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 Experts at Broad Ripple Service Experts. We’ll examine the situation, figure out the cause, and provide the necessary service. Our priority is to bring back indoor comfort, energy efficiency and dependable furnace performance for all season long. And our services are supported by a 100% Satisfaction Guarantee for a year.* For more details about furnace short cycling, or to request HVAC repair, reach us at 317-527-0271 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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