4 Reasons Your Furnace Is Making a Banging Sound
Like other mechanical systems, furnaces make some noise while running. The noise is often low and isn’t very disruptive. If your unit produces weird banging sounds, however, it may be a telltale that it has an issue. Here are the common causes of banging sounds when a furnace is on. 1. Clogged Air Filter The leading cause of banging sounds in a furnace is clogged air filters. The accumulation of dust, dirt and other debris may block your unit, leading to increased air pressure. The pressure may result in the expansion and contraction of the metal ducts, causing loud bangs...
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