Why Your Furnace is Blowing Cold Air and How to Fix It

Winter nights in Kalispell can be brutal, and there's nothing worse than turning on your furnace only to find that it's blowing cold air.

Not only is it uncomfortable, but it could also signal a more significant problem with your heating system.

In this blog post, we'll explore some common reasons why your furnace is blowing cold air and what you can do to fix it.

Thermostat Settings

The first thing you should check is your thermostat. Make sure it's set to the right temperature and isn’t on "fan only" mode, which will result in circulating cold air throughout your home. If the thermostat is faulty, consider replacing it with a programmable model.

Clogged Air Filter

A clogged air filter can cause your furnace to overheat and trigger the safety mechanism that shuts off the burners. This, in turn, leads to cold air blowing through your air ducts.

Check your air filter and replace it if it's dirty or clogged. Ideally, you should change it every three months. If you have pets or allergies, you should replace the air filter more frequently.

Either way, it never hurts to at least check your air filter every month. A clogged air filter can damage your furnace.

The Pilot Light is Out

Your furnace’s pilot light may have gone out or isn't functioning properly.

Relight the pilot light according to the manufacturer's instructions. Or you can call one of our furnace repairmen to do it for you.

If the pilot light keeps going out, it could be a sign of a faulty thermocouple or gas valve, which will require professional repair or replacement.

Gas Supply Issues

If you have a gas furnace, check that the gas supply is on and not disconnected or running low. If you smell gas, turn off the furnace immediately and call your gas company or fire department. Gas leaks are hazardous and should be taken seriously.

Damaged Ductwork

Damaged ductwork can cause a variety of problems for a furnace system, one of which is blowing cold air. Damaged ducts can cause the warm air to leak before making it into your rooms.

As a result, it is essential to check ductwork frequently and repair any damage to avoid further issues.

Trust Us to Get Your Furnace Blowing Hot Air Again

Cold air blowing from your furnace is a problem that should always be taken seriously. Ignoring it can lead to bigger and more costly repairs down the line, not to mention a chilly home during the winter months.

At Aire Serv of Kalispell, we can help diagnose and repair your furnace that's blowing cold air. We offer 24/7 service, and we don't charge overtime rates for emergency service. We're here to provide prompt, professional furnace repair to keep you warm all winter long.

If you need furnace repair, call us or request your service online today.