See further detail related to it here. In respect to this, why is my air handler so loud?
In many cases it's caused by a bad belt or bearing in the blower motor. Unusually noisy motors inside air handlers and furnaces make squealing, screeching, rattling and/or banging sounds when the equipment is malfunctioning.
why does my HVAC make noise? An HVAC system that is running normally will make a soft humming noise. The humming could be from loose parts, such as the blower motor fan, loose blades, or loose pipes that are rubbing together. Your loud humming noise could also be the result of loose wiring, circuit breaker overload or failed condenser fan motor.
Beside above, how do I stop my air conditioner from making noise?
You may prevent the occurrence of noise by oiling the air conditioner motor at the beginning of each summer. When an air conditioner unit is working, it vibrates; this vibration can cause screws in the unit to come loose.
Why is my compressor making noise?
The sound probably means that the motor has come loose and is moving around inside the sealed compressor can. Hissing or bubbling: A serious refrigerant leak can produce hissing noises in the compressor. Humming: A hard-to-start compressor that makes humming noises could be low on oil.