AC blows sporadically
My AC unit runs outside, but at times it will not blow in certian parts of the house. We already had the board replaced for the air handler. Sometimes sounds like a hurricane blowing out the vent upstairs in one area, sometimes nothing blows at all and the AC is running. We have 3 zones (2 upstairs, 1 downstairs). I am at a loss of what to do next. One company came and disconnected one of the zones and nearly froze up the air handler. We have a home warranty, but not sure how to get this fixed - pick wrong thing and they send the wrong people. HELP!