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5 Reasons Why Your Home’s Furnace Is Producing Cold Air

One of the common issues that may result in your heating system blowing cold air in your house is a dirty or clogged filter. Inside your unit is a filter that entraps air pollutants such as dirt, dust, pollen, pet dander, and other debris. With time the furnace filter may become overly dirty and clogged, causing your heating unit to malfunction.
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