You don't want to discover cold air coming from your furnace on a frigid day. Heat is generated by burning natural gas or oil in a furnace. Unfortunately, it is common for cold air to blow when this process is interrupted. When repairing heating systems, professionals will consider several options. Here are a few reasons you might have cold air blowing from the furnace.

Why Might Your Furnace Blow Cold Air?

1. Faulty Pilot Light

Natural gas is ignited by the pilot light in your furnace, which is a small blue flame. The light is usually located just inside the unit and is always on. If your gas is out, your heater won't work, so it will only blow cold air. If you are comfortable doing so, you can reignite the flame with a match or lighter. If this doesn't work, the gas supply line or connections may be damaged and require repairs.

2. Dirty Filters

Furnace problems are often caused by dirty air filters. Air filters catch dust and other debris in incoming air, so they don't collect in your furnace or enter your ductwork. Clogged filters restrict airflow. Due to this, your furnace may have difficulty drawing in air, leading to overheating. Since the heating element is deactivated, you will only receive cold air from your unit as a safety precaution. Filters should be replaced whenever a dense gray substance accumulates on them.

3. Broken Thermostat

In order to operate properly, your thermostat must communicate programmed temperatures to your unit. In addition to monitoring indoor air, the unit must also be able to determine when to turn on or off based on programmed temperatures. The thermostat's electrical wiring and sensors will be checked by a professional during a heating repair. After replacing any necessary parts, the unit will be restored.

If you’re facing furnace issues and other HVAC problems, contact the heating and cooling specialists at Colburns Heating & Air Conditioning. Serving Frewsburg, NY, and the surrounding communities, this company works with a wide range of heating and air conditioning systems, including boilers, furnaces, and ductless units. They also provide duct cleaning services, so call (716) 569-3695 to schedule an inspection. Visit their website to explore all of their services.