Why is My Furnace Blowing Cold Air?

Two people placing their hands in front of a vent.

It’s the middle of winter and most of us are relying heavily on our heating systems to keep us warm and comfortable in our homes. One of the biggest nightmares a homeowner can have is their furnace breaking down in the middle of a cold winter night. Believe us, we’ve all been there. While we all go through problems with our HVAC system at some point, it can be very frustrating when the furnace isn’t working properly, especially if it’s blowing cold air with freezing temperatures outside.

If you’ve been having issues with your furnace this season, specifically with it blowing cold air, Carter Comfort Systems is here to share a few reasons why this might be happening. Keep reading to find out how we can help you!

Check Your Thermostat

You have control over the comfort of your home with the push of a button on your thermostat. So, if you feel cold air coming from your furnace, the first thing you should do is make sure your thermostat is set correctly. It’s quite common to incorrectly set your thermostat and it’s an easy mistake to make, so double check your thermostat is set to “Auto” and not “On.” Also make sure the temperature is set to your preference.

Dirty Filter

It’s no secret that air filters become clogged over time with dust, dirt, and other debris, meaning your filters should be checked and changed regularly. A furnace with an extremely clogged air filter will have trouble distributing heat throughout your home and can also become overheated, causing your furnace to turn off and only be able to blow cold air. Due to the fact that your furnace is blowing cold air instead of warm air, energy is being wasted which will result in a higher utility bill. To avoid a utility bill that could break the bank, turn your furnace off and check the air filter. Filters should be checked every 30 days and changed at least every 60 to 90 days. All you have to do is go to your local home improvement store and buy an inexpensive filter that fits your furnace.

Pilot Light Issue

If your furnace’s pilot light keeps going out, we recommend giving Carter Comfort Systems a call to come take a look. While you can try and fix the pilot light yourself using your furnace’s manual, it can be very dangerous, especially if you have a gas furnace. If you prefer not to handle things on your own, we’re one call away at (208) 739-4181.

No Gas

If you’re dealing with a faulty pilot light, there could also be an issue with your gas supply. The one good thing about a problem with the gas supply is that your furnace will automatically shut off, therefore, if there isn’t enough gas in the tank, your furnace will turn off instead of continuing to run. If you have a problem with your gas supply, call us at (208) 739-4181 as this job requires professional help.

Leaky Ductwork

Leaky ductwork can make your furnace run less efficiently and can often be a tough problem to find unless you’re specifically looking for it. If there are holes or disconnections in your ductwork, then the hot air is escaping before it even reaches your vents. If you think you have a case of leaky ductwork, Carter Comfort Systems will come right out and perform an inspection.

At Carter Comfort Systems, we want you to be comfortable in your home all year long, which is why we offer premier HVAC repair services. If you’ve been shivering the night away due to a furnace that’s blowing cold air, don’t hesitate to contact us. Give us a call at (208) 739-4181 or fill out our online contact form to schedule your service.