Leave Feedback/Report a Problem
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 – Drain waste and vent system installation
Industry Description
A residential drain waste and vent (DWV) system is all of the pipes that carry waste out of the home along with other pipes that vent the system to the atmosphere and ensure that everything drains correctly. Home network systems may be able to monitor methane, oxygen, and other gas sensors to verify correct functioning of the DWV system.
(11-29-2013)
What People are Saying.