Strange sounds or smells often sign the necessity for HVAC maintenance services. Rattling may well show unfastened panels, squealing can stage to the belt or motor problem, banging could be connected with the blower or ducts, grinding indicates worn bearings, clicking may signal electrical faults, and hissing can suggest refrigerant https://altbookmark.com/story22816106/not-known-details-about-hvac-repairs