It can be frustrating when your heating system fails in the middle of winter. You can troubleshoot your furnace before calling a service professional. Here are some of the things that you can do to restore your heating system.

Check your Furnace Settings

If your furnace is not heating, you can start by checking that it is on and adjust its setting. The system may have been turned off during the last HVAC service. Locate the wall switch and check your owner’s manual if you’re unsure about which switch it is.

If the switch is on, the next thing to check is that the fan is on “auto.” Some systems do not have blowers designed to run continuously, so the “on” mode may fail to provide adequate heating. Moreover, setting the furnace to run on the “on” mode can speed up the deterioration of your system.

Also, if you choose the “auto” mode and the fan continues running continuously, you may need to contact a professional. It could be a defective fan limit switch. Christian Brothers Air Conditioning, Plumbing & Electrical offers a 24-hour repair service in Glendale, AZ.

Adjust and Troubleshoot the Thermostat

Thermostat configurations or defects could be the reason behind your furnace problems. You can adjust the settings to see if the system will respond. Your thermostat may also have dead batteries, so replace them and test the device.

Programmable thermostats will generate an error code that can give you a clue about how to solve the problem. You may have to call for a repair service if the thermostat is not working. A professional team can troubleshoot your system to pinpoint the fault.

Address Airflow Obstructions

If you have checked the furnace and the thermostat, the other issue could be airflow obstructions. Blockages around the indoor vents on your wall can force your system to shut down. Remove drapes, furniture, or any items that may be causing an obstruction.

Another factor in airflow obstruction is a dirty filter. Debris and dust will accumulate, forcing your furnace to overwork. A dirty filter can also introduce allergens and pollution into the indoor space. That’s why you should replace it once a month, depending on your system.

Since airflow blockages force your system to overwork, the heat exchanger can crack. During the annual maintenance visit, a technician can spot such problems. Skipping fall furnace tune-up will only increase the risk of total system failure.

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