Common Causes of a Rattling Furnace
Furnaces were once one of the noisiest methods to heat a home: the sound of a furnace coming on was like a roaring dragon in a basement. But those days are far in the past, and modern furnaces operate mostly unobtrusively, a slight background sound for everyday life. Until, that is, something starts to go wrong. Unusual furnace noises are early warning signs of repair needs.
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