2 Reasons Your Furnace Is Blowing Cold Air (And How to Fix Them)

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2 Reasons Your Furnace Is Blowing Cold Air (And How to Fix Them)

JUNE 29, 2023

No one likes it if their furnace is blowing cold air when it should be producing heat. Most people start to stress at the mention of phrases like “furnace troubleshooting” and “heating repair.” That is normal, but before panicking, here are two common tips to help with furnace repair.

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1. Look at the quality of the furnace’s air filter.

One of the most common issues with furnaces is a dirty air filter. Over time, dust and grime will collect on the air filter and create a barrier to the steady airflow from the furnace’s heat exchanger.

Naturally, this will cause the heat exchanger to overheat, which may eventually cause the furnace burners to turn off reactively to protect the heat exchanger from damage.

To solve this problem, turn off the furnace at the thermostat and check the filter for filth. If there is a clear build-up of debris, then change the filter. Hopefully, the furnace will stop blowing cold air, and everything will work. Some filters may need professional help to change, but most are straightforward.

2. Examine the furnace’s condensate line.

Although this step might sound scary, it is not as bad as it sounds. For high-efficiency furnaces, the condensate line can often experience blockage because of excess dust, mold, and other debris. The condensate line of a furnace is generally just a PVC pipe, and the backup may be easy to spot if it causes water puddles at the base of the furnace.

Condensate is just a technical term for water. When these high-efficiency furnaces are turned on, they are supposed to make condensate that will flow from away in a line. If dust, mold, or anything else blocks that line, water will overflow.

The good news is that most of these blockages can be fixed easily. However, in some cases of blockage due to ice or a broken condensate pump, it is often best to seek help from a professional HVAC company for issues like gas furnace repair.

A quality professional HVAC company will save time and money by fixing issues that could worsen and permanently damage a furnace. Please get professional furnace repair services if these simple solutions do not work.


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