NAICS Code 238220

NAICS 238220

NAICS Code 238220 – Plumbing, Heating, and Air-Conditioning Contractors

Definition of NAICS Code 238220: This industry comprises establishments primarily engaged in installing and servicing plumbing, heating, and air-conditioning equipment. Contractors in this industry may provide both parts and labor when performing work. The work performed may include new work, additions, alterations, maintenance, and repairs.

  • You can also download your own copy of the complete 2017 NAICS Classification Manual. The NAICS Manual is updated every five years. The 2017 copy will be applicable until a new edition is produced in 2022.

Illustrative Examples of NAICS 238220

What are some examples of this code? The bulleted items below are illustrative examples of this classification.

  • Cooling tower installation
  • Heating, ventilation, and air-conditioning (HVAC) contractors
  • Duct work (e.g., cooling, dust collection, exhaust, heating, ventilation) installation
  • Lawn sprinkler system installation
  • Fire sprinkler system installation
  • Mechanical contractors
  • Fireplace, natural gas, installation
  • Refrigeration system (e.g., commercial, industrial, scientific) installation
  • Furnace installation
  • Sewer hook-up and connection, building

Cross Reference Guide for Code 238220

What codes are similar to this classification that might be a more applicable code? The cross-reference guide below displays the codes for other similar industries. Please review to find the most applicable classification.

  • Installing electrical controls for HVAC systems–are classified in Industry NAICS 238210, Electrical Contractors and Other Wiring Installation Contractors;
  • Duct cleaning–are classified in Industry NAICS 561790, Other Services to Buildings and Dwellings; and
  • Installing septic tanks–are classified in Industry NAICS 238910, Site Preparation Contractors.

Other Index Entries for NAICS 238220

The North American Industry Classification System contains multiple index entries that are each descriptive of the same code. The bulleted list below shows all applicable index entries (Current and former) that are associated with this classification. These index entries further elaborate on the scope of applicable industries that have already been defined at the top of this page.

  • Air system balancing and testing
  • Air vent installation
  • Air-conditioning system (except window) installation
  • Bathroom plumbing fixture and sanitary ware installation
  • Blower or fan, cooling and dry heating, installation
  • Boiler chipping, cleaning and scaling
  • Boiler, heating, installation
  • Central air-conditioning equipment installation
  • Central cooling equipment and piping installation
  • Central heating equipment and piping installation
  • Chilled water system installation
  • Chimney liner installation
  • Commercial freezer installation
  • Commercial refrigeration system installation
  • Cooling tower installation
  • Drain, waste and vent system installation
  • Drinking fountain installation
  • Dry heating equipment installation
  • Duct work (e.g., cooling, dust collection, exhaust, heating, ventilation) installation
  • Dust collecting and bag house equipment installation
  • Exhaust system (e.g., kitchens, industrial work areas) installation
  • Fire sprinkler system installation
  • Fireplace, natural gas, installation
  • Fuel oil burner installation
  • Furnace conversion (i.e., from one fuel to another)
  • Furnace humidifier installation
  • Furnace installation
  • Furnace, forced air, installation
  • Gas fitting contractor
  • Gas line installation, individual hookup, contractors
  • Heat pump installation
  • Heating and cooling duct work installation
  • Heating and ventilation system component (e.g., air registers, diffusers, filters, grilles, sound attenuators) installation
  • Heating boiler installation
  • Heating contractors
  • Heating equipment installation
  • Heating, ventilation and air-conditioning (HVAC) contractors
  • Hot water heating system installation
  • Hot water tank installation
  • Household oil storage tank installation
  • HVAC (heating, ventilation and air-conditioning) contractors
  • Hydronic heating system installation
  • Industrial process piping installation
  • Kitchen sink and hardware installation
  • Lawn sprinkler system installation
  • Mechanical contractors
  • Natural gas piping installation
  • Oil burner installation
  • Pipe fitting contractors
  • Plumbers
  • Plumbing and heating contractors
  • Plumbing contractors
  • Plumbing fixture installation
  • Process piping installation
  • Pumping system, water, installation
  • Radiant floor heating equipment installation
  • Refrigeration system (e.g., commercial, industrial, scientific) installation
  • Sanitary ware installation
  • Scrubber, air purification, installation
  • Sewer hook-up and connection, building
  • Sheet metal duct work installation
  • Snow melting system (e.g., hot water, glycol) installation
  • Solar heating equipment installation
  • Sprinkler system, building, installation
  • Steam fitting contractors
  • Sump pump installation
  • Ventilating contractors
  • Warehouse refrigeration system installation
  • Warm air heating system installation
  • Water heater installation
  • Water meter installation
  • Water softener installation
  • Water system balancing and testing contractors
Insurance Conversion Table for NAICS Code 238220

Looking for an insurance classification other than the North American Industry Classification System? If a company falls within the industry defined on this page, then the class codes mentioned below may be applicable. Please note that the bulleted cross-reference guide below is not authoritative. Users should have an insurance professional review to ensure proper insurance classification.

  • NCCI WC (Varies by state): 6229, 3724, 5183, 5188, 5537, 5183, 5537NAICS 238220
  • CA WC: 6364, 3724, 5184, 5183, 5185, 5538
  • DE WC: 609, 663, 664
  • PA WC: 609, 663, 664
  • MI WC: 6229, 3724, 5183, 5188, 5550
  • NJ WC: 6229, 3724, 5183, 5188, 5538, 5538
  • NY WC: 6229, 3724, 5183, 5184, 5193, 5188, 5536
  • WY WC: 238220
  • GL: 98806, 95648, 99165, 95648, 98483, 95647, 99948, 94381, 99080, 98482, 98483, 91111
  • SIC: 1711

Resources: Praxiom, AceGroupTDICalifornia Division of Workers Compensation, Delaware Workers Compensation Manual, Pennsylvania Workers Compensation Manual, Michigan Workers’ Compensation Placement Facility: Classification Definitions, New Jersey Workers Compensation and Employers Liability Insurance Manual, New York Workers Compensation and Employers Liability, North American Industry Classification System, Florida Underwriting Guide: Commercial General Liability Classifications,  Standard Industrial Classifications.

The suggested cross reference guide for NAICS code 238220 is based on our research using the resources cited above.

Correlating Code Breakdown for North American Industry Classification System

NAICS codes are broken down by digit. The broadest description starts with the 2 digit sector codes. The 3 digit subsector codes are more specific, then the 4 digit industry group, 5 digit industry, and the most specific is the 6 digit NAICS code (Where you are now). If the code on this page does not describe the industry of the business in question, then select the largest applicable code below. From there, follow through the progression of smaller digits to the larger digits in order to obtain the most specific 6 digit classification.

Other helpful NAICS Downloads

View the download page for the material below.

NAICS Code 238220