[Class : 37] Installation Maintenance And Repair Services For Heating, Cooling, Ventilating, Air Conditioning And Refrigeration Equipment, Aerosol Based Sealing And Duct Diagnostic Services For Air Conditioning And Heating Duct Systems In Residential And Commercial Buildings[Class : 11] Air Conditioners And Air Conditioning Condensing Units; Heating, Refrigerating, Ventilating, And Air Conditioning Units, Namely, Residential Furnaces And Heat Pumps, Residential And Commercial Ventilating Fans, And Residential And Commercial Heating And Cooling Systems; And Component Parts Thereof, Including Thermostats, Controls, Air Cleaners, Air Purifiers, Media Filters, Humidifiers, Fan Coils, Carbon Monoxide Detectors, Heat Recovery Ventilators, Energy Recovery Ventilators, Automatic Standby Generators, Ultraviolet Germicidal Lights, Boilers, Oil Furnaces, Evaporator Coils, Duct Free Split Systems, Gas Furnaces, Dehumidifiers, Window Room Air Conditioners; Commercial Air Handlers; Namely, Transport Refrigeration Units Such As For Trucks, Trailers And Shipping Containers.[Class : 36] Providing Extended Warranties On Heating And Ac Installation And Maintenance Services