informative post up to those ghastly warnings. An AC hissing sound might sound similar to a snake, but The truth is, it suggests a serious problem with your air conditioner’s refrigerant system. Refrigerant leaks make a hissing audio mainly because of the significant-stress launch of fuel escaping by way of a really smaller opening.if there’s damage to the refrigerant line, a hissing noise can arise given that the gases inside the refrigerant make connection with the exterior air.No, it's not important Except if the evaporator coils are frozen, during which case, turn off your air conditioner to Enable the coils thaw.Check out learn this here now the compressor: A failing compressor can show signs and symptoms of short cycling. It’s a good idea to have your HVAC Experienced check your AC compressor and, if essential, substitute it that has a new just one.If your AC is over the more mature aspect so you’re hearing a squeaking sound, contact an AC technician for an inspection.