Air conditioner making 'buzzing' sound. Hvac Makes Loud Noise When Starting
Possible causes include damaged belts, faulty fan blades, worn bearings, or a failing fan motor. Turn off the unit and call an HVAC technician Trying to figure out if this is normal due to scroll compressor or if it's a bad compressor assembly. Still under warranty & technician Furnace blower noisy or loud? This video provides information on how to troubleshoot a furnace that's too loud and the most likely ...