Why Does My Furnace Keep Turning Off?

does your furnace keep shutting off?

At a normal operation, your furnace turns on and off automatically for about 3-6 times in an hour to keep the right heating in your home. If you notice your unit is turning on and off more than this, short-cycling is most likely the reason why. The good news is that it can be fixed with just one call to the experts at Kirk Air Conditioning & Heating. The bad news is- if it’s neglected, it can cause higher utility bill and damage to the components of your furnace.

Why Your Furnace Turns On And Off Repeatedly Dirty Air Filter

After some time, the particles that air filters trap can already block the airflow straining your system and causing it to shut down. This is the most common reason why short cycling happens. Good thing, air filter cleaning or replacement is just an easy and cheap procedure that you can do yourself.

Thermostat Problem

Improper placement of the thermostat can also lead to short cycling. It’s important that thermostats are not placed near a heat source such as direct sunlight and heat registers to prevent the sensors from getting the wrong idea that your home is too warm so the furnace should be turned off. Call the professionals to relocate the thermostat.

Incompatible Furnace

Size matters when purchasing a furnace. It should not be too big or too small for your home. Too big furnace warms your home quickly then turns off, in a repeated manner until your unit completely breaks down. This is probably the worst scenario since it leaves you no choice but purchase a brand new furnace that fits the size of your home.

Blocked Exhaust Vents

Normally called flue pipes, exhaust vents serve as drainage for certain gases that your furnace released. Sometimes, bird’s nest, leaves and other debris block the vents causing those gases to flow back into the furnace and overheat it. It also causes carbon monoxide to get inside your home.

Corroded Flame Sensor

One of the safety features you can find in your furnace is the flame sensor. However, rust can accumulate in this area and hinder the sensor from working properly causing your unit to short cycle. It is highly recommended that you hire a professional technician to solve this issue for it involves high voltage and flammable gas. If these furnace problems are troubling you, call the experts at Kirk Air Conditioning & Heating for help.


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