The dreaded blinking red light on your furnace can be stressful to deal with. After all, it could mean different things, some of which require immediate action from a local HVAC technician. Climate Systems Heating and Cooling discusses the common causes of a blinking red light on furnaces.

Faulty Thermostat

A malfunctioning thermostat sensor causes the furnace to change temperatures inaccurately. If you have an older model, it’s worth considering upgrading to one of the newer models available today. Get in touch with your local HVAC contractor to help you find the most compatible one for your system.

Igniter Issues

A faulty igniter can also lead to a blinking red light on your furnace. It means that the heating element cannot start properly. Have your local HVAC technician inspect your unit to find out what’s preventing the igniter to function. Depending on the age and condition of your current unit, they might recommend replacing it with one designed for energy efficiency or longevity.

Gas Pressure Issues

Proper gas pressure is crucial to the overall performance of your furnace. If it is too low, the unit’s efficiency will go down. Inconsistent air-fuel ratios lead to high amounts of condensation, which accumulates in the heat exchanger and causes corrosion. If it is too high, the unit may be at risk of overheating, which may affect the interior components. In both situations, expect a red light to blink — an indication that an urgent furnace inspection is due.

Clogged Filters

Your furnace’s air filters are an important component of your HVAC system. They capture impurities in the air that goes through the unit. They can get filled to capacity, however, which may prevent the system from providing adequate heating to your home. A blinking red light alerts you of the need to clean or replace your air filters.

If you have a furnace issue that requires immediate attention, turn to Climate Systems Heating and Cooling. Our team of certified technicians provides top-notch repair, installation and maintenance services for furnaces of all kinds. Get started by calling (724) 935-3900 or filling out this contact form for an estimate.

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