Can Extreme Cold Cause Furnace Problems?

By its very nature, a furnace is meant to be able to handle cold temperatures. After all, that’s the point of having this unit in your home – to warm up your spaces while it is cold outside. But what if it gets particularly cold? This article will look at what you need to be concerned with if the weather outside dips even lower than normal for a few days.

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It’s About Stress

As a homeowner, you should understand that particularly cold weather is going to put your furnace under a lot of stress. Basically, the conditions outside are demanding the furnace to work harder than usual, and that workload can cause things to break down. Some of the components that may be at risk include the blower motor, the heat exchanger, and the burners.

One way to help reduce the stress on your furnace during extremely cold weather is by ensuring that your home is properly sealed. Check for drafts around windows and doors, as these can allow cold air to enter, forcing your furnace to work harder to maintain a comfortable temperature. Adding weatherstripping or using draft stoppers can help keep the warm air inside and reduce the workload on your heating system. This simple step can make a big difference in your furnace’s efficiency and longevity during a cold snap. Additionally, make sure your furnace filter is clean and clear of debris to ensure optimal airflow and prevent unnecessary strain on the system.

Watch for Airflow Problems

If there is a lot of snow outside, or if some ice has formed around your home, it’s possible that the exterior vents that serve your furnace could be blocked. That will lead to reduced airflow, and again, additional stress on the system. Quickly clearing away these vents to make sure the air can move freely will go a long way toward getting the performance you need without causing the furnace to break down.

Frozen Drain Pipes Are a Concern

Along the same lines as the previous point, you might also find a situation where the condensate drain line that serves your furnace freezes up and can no longer drain water away. This could lead to a problem if the water backs up through the pipe and causes the furnace to shut down. When you know a cold snap is coming, you can install some pipe insulation to keep the line from freezing, or you could just check it periodically during the cold weather and thaw it out to open the line, if necessary.

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