Signs your AC needs repair be a problem of just eliminating the hive and evaluating In case the sound has solved Subsequently. Having said that, these noises could also issue to a far more critical situation that requires an HVAC specialist.As a extremely toxic material, refrigerant leak considerations need to only be managed by properly trained professionals. If your AC is making a hissing sound therefore you suspect This can be the bring about, connect with an HVAC qualified right away.A squealing sound could possibly be as a result of a nasty bearing, nonetheless it might also consequence from the supporter blade rubbing from the supporter housing or One more Component of the HVAC Signs your AC needs repair unit.