6 Reasons Why Your Furnace Keeps Turning Off and How to Take Care of It 

Your furnace keeps your house warm during the chilly winter months, so it’s frustrating when something is off. One routine complaint is a furnace that continually turns on and turns off over and over. This problem is known as short cycling. It stresses your heating system and may result in pricey repairs or even early breakdowns. 

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

1. Dirty Air Filter 

The HVAC filter catches airborne dust, hair and other substances that could wreak havoc on furnace. If you don’t get a new filter often enough, it can get clogged and decrease the airflow. When this occurs, 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 restrict airflow and overheat your furnace. Walk around your home and look for shut or blocked air vents. For recommended system balance and performance, keep all registers open, even in unoccupied rooms. 

3. Dirty Blower Wheel 

The furnace blower has blades that push air through the ductwork. If they are covered in dirt, the air won’t move correctly, causing overheating and short cycling. Frequently putting in a new the filter is the simplest method to avoid a dirty blower wheel. If the blades are already dirty, schedule 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. Double-check the thermostat is in heating mode and auto fan with the desired temperature showing on the screen. Try changing 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. 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 sooner and the furnace shuts off. Leave the work of cleaning a faulty flame sensor to a pro like Neal Harris Service Experts. 

6. Oversized Furnace 

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

If you try the solutions we mentioned here and nothing has changed, it’s time to contact the professionals at Neal Harris Service Experts. We’ll review the situation, diagnose the cause, and provide the necessary service. Our goal 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 schedule HVAC repair, reach us at 816-787-0500 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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