Your furnace should be able to supply your home in Harrisonburg, VA, with a continual supply of warm air. However, it’s not unusual to get only cold air as a result of a malfunction. Below, we’ll discuss some of the possible reasons why your furnace might be blowing out cold air.

The Wrong Thermostat Setting

Hopefully, it’s only a matter of your thermostat being on the “On” setting rather than the “Auto.” In the “On” mode, the furnace fan will continue to run even after you’ve reached the desired temperature, so the resulting air will naturally be cool.

A Clogged Air Filter

You should replace the filter in your return vent every three months, or the dirt and debris on it will hinder airflow and cause the furnace to overheat. Whenever a furnace overheats, a sensor will shut off the hot air as a safety precaution, leading to the circulation of only cool air.

Burned-Out Pilot Light

Check your pilot light because it may be burned out, or it may be burning red or yellow rather than blue. Without the pilot light, you won’t get warm air. Fluctuating gas levels and a bad thermocouple are just two possible explanations for the burned-out pilot light.

Leak in the Air Ducts

Another possibility is that the furnace is functioning as it should, only the ducts are letting all that warm air escape through cracks and holes. Usually, professional maintenance will alert you to the existence of these issues so that you can get the ducts sealed.

Whether you request maintenance or a heating repair here in Harrisonburg, you can rely on Valley Air Heating, Cooling & Plumbing for quality results; call today to schedule your appointment. Our family-owned and -operated company will 100% guarantee your satisfaction in the end. Our technicians can fix any make or model of oil, gas, or electric furnace.

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