List of Specific Industries
To the right, click on the [+] or [-] graphics beside an industry category to expand or collapse that list.
North American Industry Classification System (NAICS) codes for this industry
[238220 ] = Plumbing, heating, and air-conditioning contractors — Heating, ventilation and air-conditioning (HVAC) contractors
In the future, Heating, Venting, and Air Conditioning (HVAC) systems may require factory-trained specialists capable of handling basic problems as well as home network components. System checks, problem diagnosis, and repairs for zone controls and digital controls for furnace, heat pump, and air conditioning systems may also be done.