This industry comprises establishments primarily engaged in the merchant wholesale distribution of warm air heating and air-conditioning equipment and supplies. Illustrative Examples: Air pollution control equipment and supplies merchant wholesalers Nonportable electric baseboard heaters merchant wholesalers Air-conditioning equipment (except room units) merchant wholesalers Warm air central heating equipment merchant wholesalers Automotive air-conditioners merchant wholesalers Ductless heating and air-conditioning system equipment merchant wholesalers Establishments primarily engaged in--

Including:

• Air pollution control equipment and supplies merchant wholesalers
• Air-conditioning equipment (except room units) merchant wholesalers
• Automotive air-conditioners merchant wholesalers
• Baseboard heaters, electric, nonportable, merchant wholesalers
• Central heating equipment, warm air, merchant wholesalers
• Compressors, air-conditioning, merchant wholesalers
• Condensing units, air-conditioning, merchant wholesalers
• Cooling equipment and supplies merchant wholesalers
• Ductless heating and air-conditioning system equipment merchant wholesalers
• Dust collection equipment merchant wholesalers
• Furnaces, warm air (i.e., forced air), merchant wholesalers
• Heat pumps merchant wholesalers
• Heating equipment, warm air (i.e. forced air), merchant wholesalers
• Humidifiers and dehumidifiers (except portable) merchant wholesalers
• HVAC equipment merchant wholesalers
• Pollution control equipment, air, merchant wholesalers
• Sheet metal duct work (heating and air-conditioning) merchant wholesalers
• Ventilating equipment and supplies (except household-type fans) merchant wholesalers
• Warm air heating equipment merchant wholesalers