Classification Information
Air conditioning contractor services; Heating contractor services; HVAC contractor services; Installation, maintenance and repair of heating, cooling, HVAC systems and equipment; Installation, maintenance and repair of cooling towers, roof top units, chillers, boilers, packaged and split systems, air purifiers, air ducts, gas furnaces, electric furnaces, oil furnaces, thermostats, humidifiers and dehumidifiers, HVAC building management systems
Building Construction and Repair