Heat was 'on' on the thermostat...went to breaker in garage and killed the 'heat' breaker. All loud noise stopped (outside unit died). Flipped everything back on and noise is back (took about 5-10 mins for heat to come back on). There was a very faint "airy" sound at the outside unit when it was off...
Last edited by theguyonthecouch; 02/18/15 05:04 PM.
