Why is My Furnace Freezing Up?

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Mon, 11/19/2018 - 9:22am / By christina

Why is My Furnace Freezing Up?

The HVAC unit is an essential part of either keeping your home comfortable all year long. The largest system within the unit is your furnace. It is imperative that your furnace is working properly, so it can keep your house warm during the harsh Illinois winters. No matter how old your unit is, you may run into issues such as your HVAC unit freezing up. If you’ve ever wondered why your unit has failed, here are a few common reasons why.

Restricted Air Flow

Air must be flowing throughout the whole system in order for it to work. When the air passages are restricted, which could be caused by sagging ventilation pipes or items in the exhaust vent, your system can stop performing. All of these factors result in ice forming within the vents. It is important to check the vents and pipes to prevent this from happening. A way to resolve the ice forming around the exhaust vent would be to get a vent screen so that nothing can enter the exterior vent.

Coolant Leaks

Coolant is a fluid or gas substance that provides the air temperature within the system. If there is something up with the coolant levels, then the system will not blow air properly. This issue needs to be addressed with a contractor. For a short-term fix, people may put a sealant on wherever the coolant is dripping from. But, this doesn't cover the root of the problem. The contractor would need to see the root of the problem. It is common for this issue to form around the coils, and then they would need to be replaced if that's where it's coming from. So, this is a fixable problem, but it must be addressed for the long term, ensuring it won't happen again.

Dirty Coils

Evaporator coils have the function to help with converting the air into heat. It is important to maintain cleanliness, as dirt can form in these coils which can restrict air flow. Additionally, ice can follow after and freeze up the system. Though you can perform minor clean up on your own, such as removing leaves from the coils, more extreme issues require an HVAC technician.

Taking proper care of your unit can ensure that it is running smoothly. Though there are things that you may be able to handle on your own, you may want professional help so that things can be properly resolved. To get the assistance you need, contact Command Services today.