Abnormal Seems or smells generally sign the necessity for HVAC maintenance service. Rattling may point out unfastened panels, squealing can issue to a belt or motor problem, banging could be linked to the blower or ducts, grinding indicates worn bearings, clicking might signal electrical faults, and hissing can show refrigerant https://bookmarkedblog.com/story21905111/hvac-repairs-fundamentals-explained