HVAC Repair From Cair Heating and Cooling. Cair HVAC is one of the best heating and air conditioning contractors in the Louisville, KY region. At Cair, we offer new installations of HVAC equipement, emergency HVAC service, and emergency HVAC repair for a wide diversity of residential and commercial HVAC systems from leading manufacturers. Included are Bryant, Trane, Carrier, Goodman, Amana, York, Rheem, Ruud, Lennox, Heil, Honeywell and Aprilaire. We also work on Bosch, ClimateMaster and Water Furnace for Geothermal heating installations.