content in, tricking the system into considering it is hotter indoors than it truly is. Consequently, the air conditioner turns on a lot more frequently without correctly cooling the house.if there’s damage to the refrigerant line, a hissing sound can come about as the gases within the refrigerant make contact with the exterior air.At the time the cause of short cycling is identified, correct troubleshooting measures may be taken to address the issue:Look into the earlier mentioned stated objects, click site starting up Together with the filters. Then, Speak to an experienced HVAC technician to diagnose and repair the air conditioner.Is that this common HVAC noise coming from your AC unit? If so, it could be some type of compressor malfunction. In addition, it is likely to be a refrigerant leak that causes the unit to freeze. Or it would be just a free section vibrating. You should have it checked out while.