The furnace in your Corpus Christi, TX, home should run for 10 to 15 minutes each heating cycle. Anything longer indicates there’s a problem with the unit, which can lead to reduced efficiency. Read on for some of the most common reasons for extended heating cycles and what you can do about it.
If you set your thermostat at a higher temperature than your system can handle, your furnace will run longer cycles. Ideally, try to keep your thermostat set no higher than about 72 degrees.
Clogged Air Filter
Your system depends on its ability to cycle air to heat your home properly. A clogged air filter means less air moves through, which extends the heating cycle. Not only does a clogged filter affect your furnace’s efficiency, but it can also impact your home’s indoor air quality.
As a general rule, you should replace your filter every three months if it’s a 1- or 2-inch filter. Check it before then, though. Higher pollution and pollen amounts might mean you need to replace it closer to every month. Larger filters tend to have a longer life, so check your manual to see the recommended replacement schedule.
Blocked Air Ducts
In addition to requiring air filters, your system cannot circulate air with blocked air ducts. Check to make sure they’re open and that each one has at least a 2-inch clearance.
Faulty Fan Limit Switch
One of the functions of the limit switch is to shut down the furnace to prevent overheating. If it isn’t operating correctly, it’ll keep your unit running constantly. This risks overheating the unit and damaging sensitive components like the heat exchanger.
Don’t drain your life savings by letting your thermostat continue running constantly. Call to schedule your furnace repair appointment with one of the NATE-certified service technicians at Bodine-Scott Air Conditioning Co. today.
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