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Common Furnace Problems And How To Avoid Them

Winter is right around the corner, and anyone who lives in Greeley knows how critical it is to have a reliable furnace when the snow starts to fall here in Northern Colorado. HVAC systems are one of those “out of sight, out of mind” things that we tend to forget about until something goes wrong — and trust us, the last thing you want is for your heater to give out in the middle of a blizzard. It’s important to make HVAC maintenance a priority in the spring and fall so you don’t end up with an AC unit that blows warm air in the summer or no heat at all in the winter. That being said, here are some common furnace problems and how you can avoid them for a warm and cozy winter.

Furnace Is Blowing Cold Air

If your residential furnace is blowing cold air, this could be because of a dirty air filter. This can result in clogging and prevention of airflow over the heat exchanger in your furnace, which is responsible for heating cool air as it passes over top. A clogged air filter can cause your furnace to overheat, resulting in a broken or cracked heat exchanger and cool air coming from the heater. A cracked heat exchanger is a whole other issue that requires immediate attention by an HVAC contractor if you hope to have warm air in your home anytime soon and want to keep carbon monoxide from seeping into your home. Obviously, the best way to avoid having cold air blow from your furnace in the winter is to arrange for a seasonal HVAC tune-up, which will include an air filter replacement and checks for any cracks in the heat exchanger.

Thermostat Isn’t Working

Another common furnace issue people experience in the winter is an unresponsive thermostat, which can result in cold air blowing into your home. Your thermostat is like the brain of your HVAC system — it tells your heater and air conditioner when to kick on, what temperature to keep the house at, and when to turn off. If your thermostat is low on batteries or needs to be recalibrated, those “messages” might not be sent to the AC unit or furnace, causing your house to be extremely hot or cold. Fortunately, thermostat problems are an easy fix for our HVAC technicians, so if you are noticing that your thermostat is being particularly finicky or unresponsive, just give us a call and we’ll fix the problem for you.

Poor Air Flow

Remember when we mentioned that dirty air filters can cause your furnace to blow cold air into your house? Another sign of a clogged air filter is if you go to adjust the thermostat so your furnace turns on and don’t feel any air coming out of the vents. To avoid this, make sure to have your furnace’s filters changed out every few months and keep an eye on the heat exchanger as well. Also, make sure to open all of your vents when you turn on your furnace, as this helps to keep all the rooms in your house at a comfortable temperature so you aren’t wasting money by keeping the furnace running with some of the vents closed.

Furnace Smells Bad

It is normal for your furnace to give off a slight burning smell the first time you run it in the fall (approximately 30 minutes), as dust has had months to collect in the air ducts during the warm months. However, if your furnace smells bad every time it runs, this could be a cause for concern. This is especially true if you are noticing an egg smell coming from your furnace, which can be indicative of a toxic gas leak. If you get a whiff of rotten eggs when you turn on the heat, get everyone (including pets) out of the house immediately and call your local HVAC contractor to address the problem. On the other hand, if your furnace emits a persistent overheating smell similar to that of burning rubber, this could mean that an internal piece of your furnace is literally burning up and could cause a fire. Oftentimes, this is a risky electrical issue that requires the help of an HVAC professional.


Choose Comfort By Nature For Your Seasonal HVAC Tune-Up

Now that you know some of the most common furnace problems and how to avoid them, it’s time to schedule your seasonal HVAC tune-up with Comfort By Nature. Contact us today to schedule your seasonal HVAC maintenance service in Greeley!