NAICS Code 238220: Plumbing, Heating, and Air-Conditioning Contractors
National industry
SBA small business size standard: $19 million in average annual receipts
Definition
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.
Code facts
- Part of
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23
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238
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2382
- 23822
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2382
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238
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23
- Contract awards
- 2,610 In the last 12 months
- Contract obligations
- $1,007,817,225 In FY2025
NAICS codes and definitions come from the U.S. Census Bureau, size standards from the SBA and contract spending from SAM.gov/FPDS.
Business activities under NAICS 238220
- 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
Show all 73
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Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $32,952,994 |
| FY2026 | $1,023,965,214 |
| FY2025 | $1,007,817,225 |
| FY2024 | $1,131,595,262 |
| FY2023 | $1,015,592,431 |
Top contractors by obligations
| Rank | Contractor | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Chenega Enterprise Systems & Solutions, LLC | $37,385,496 | |
| 2 | North State Mechanical Inc. | $25,046,481 | |
| 3 | Mill Creek Firelake JV LLC | $25,037,437 | |
| 4 | Pipe Line Utility Contractors, LLC | $20,304,946 | |
| 5 | Within Interior Design, Inc. | $19,129,373 | |
| 6 | Copper Construction Company, Inc. | $16,778,000 | |
| 7 | Recon Construction Specialties LLC | $14,542,776 | |
| 8 | Aktarius LLC | $14,227,107 | |
| 9 | R & W Construction Company | $12,960,349 | |
| 10 | Mechworks Mechanical Contractors, Inc. | $12,543,304 |
See the full FY2025 ranking of NAICS 238220 contractors, by parent company.
Top funding agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of Veterans Affairs | $353,348,189 | |
| 2 | Department of the Navy | $185,916,299 | |
| 3 | Air Force | $85,039,764 | |
| 4 | Department of the Army | $84,819,781 | |
| 5 | Department of Agriculture | $80,126,659 | |
| 6 | Department of Justice | $52,507,470 | |
| 7 | Department of Health and Human Services | $46,275,871 | |
| 8 | Department of Homeland Security | $29,642,673 | |
| 9 | Department of the Interior | $28,920,622 | |
| 10 | Department of State | $21,813,166 |
Top PSC codes by obligations
| Rank | PSC code | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | J041 Maintenance, Repair and Rebuilding of Equipment: Refrigeration, Air Conditioning, and Air Circulating Equipment | $156,667,607 | |
| 2 | Z1DA Maintenance of Hospitals and Infirmaries | $108,981,699 | |
| 3 | Z2JZ Repair or Alteration of Miscellaneous Buildings | $108,292,282 | |
| 4 | J045 Maintenance, Repair and Rebuilding of Equipment: Plumbing, Heating, and Waste Disposal Equipment | $86,002,696 | |
| 5 | Z2DA Repair or Alteration of Hospitals and Infirmaries | $47,417,127 | |
| 6 | Z2FF Repair or Alteration of Penal Facilities | $42,812,389 | |
| 7 | Y1AA Construction of Office Buildings | $37,822,823 | |
| 8 | N041 Installation of Equipment: Refrigeration, Air Conditioning, and Air Circulating Equipment | $37,134,767 | |
| 9 | Z1AA Maintenance of Office Buildings | $34,711,200 | |
| 10 | Y1DA Construction of Hospitals and Infirmaries | $31,803,605 |
Contract obligations by state
| Rank | Place of performance | Obligated, last 12 months | Share |
|---|---|---|---|
| 1 | California | $118,718,352 | |
| 2 | Georgia | $90,024,434 | |
| 3 | Virginia | $74,614,765 | |
| 4 | North Carolina | $71,009,709 | |
| 5 | Texas | $61,246,575 | |
| 6 | Tennessee | $50,758,022 | |
| 7 | Illinois | $46,942,218 | |
| 8 | Florida | $40,710,656 | |
| 9 | Maryland | $37,087,821 | |
| 10 | Ohio | $35,058,466 | |
| 11 | New York | $29,219,603 | |
| 12 | Washington | $24,820,799 | |
| 13 | Hawaii | $20,978,262 | |
| 14 | District of Columbia | $20,853,147 | |
| 15 | Kansas | $20,820,500 | |
| 16 | Missouri | $20,362,341 | |
| 17 | South Dakota | $18,237,019 | |
| 18 | Connecticut | $13,962,337 | |
| 19 | New Mexico | $13,127,385 | |
| 20 | Nebraska | $12,749,833 | |
| 21 | Arizona | $11,734,978 | |
| 22 | Oregon | $11,692,387 | |
| 23 | Kentucky | $11,548,697 | |
| 24 | New Jersey | $10,985,127 | |
| 25 | Oklahoma | $9,612,795 | |
| 26 | Michigan | $8,759,769 | |
| 27 | South Carolina | $8,611,445 | |
| 28 | Pennsylvania | $8,588,319 | |
| 29 | Rhode Island | $8,418,627 | |
| 30 | Alaska | $7,395,074 | |
| 31 | Arkansas | $7,138,494 | |
| 32 | Colorado | $7,115,327 | |
| 33 | North Dakota | $7,061,090 | |
| 34 | Massachusetts | $6,890,037 | |
| 35 | Montana | $5,564,406 | |
| 36 | Mississippi | $5,272,631 | |
| 37 | Maine | $5,263,780 | |
| 38 | West Virginia | $5,063,060 | |
| 39 | Idaho | $4,875,328 | |
| 40 | Minnesota | $4,043,902 | |
| 41 | Indiana | $3,599,751 | |
| 42 | Louisiana | $3,547,685 | |
| 43 | Puerto Rico | $2,990,757 | |
| 44 | Iowa | $2,683,960 | |
| 45 | Wisconsin | $2,556,123 | |
| 46 | Alabama | $2,443,902 | |
| 47 | Utah | $1,941,011 | |
| 48 | Nevada | $1,538,158 | |
| 49 | Delaware | $1,243,219 | |
| 50 | New Hampshire | $974,810 | |
| 51 | Wyoming | $632,199 | |
| 52 | Vermont | $582,926 | |
| 53 | U.S. Virgin Islands | $500,254 | |
| 54 | American Samoa | $248,717 | |
| 55 | Guam | $130,935 | |
| 56 | Northern Mariana Islands | $32,139 |
Show all 56
Shares are of everything obligated under NAICS 238220 in the last 12 months before deobligations, including work performed abroad or with no place of performance on record.
Contract opportunities
Show 39 more
Latest 49 of 31,658 listed here. See the rest on GovTribe.
Size standard history
Federal Register rules that named this code
From the NAICS codes each rule's amendments to 13 CFR 121.201 name. Rules that print their size standard tables as images aren't listed.
Quick answers
What is NAICS 238220?
NAICS 238220 is Plumbing, Heating, and Air-Conditioning Contractors, a national industry in NAICS 23, Construction.
What is the NAICS code for plumbers?
The NAICS code for plumbers is 238220, Plumbing, Heating, and Air-Conditioning Contractors.
What is the NAICS code for heating contractors?
The NAICS code for heating contractors is 238220, Plumbing, Heating, and Air-Conditioning Contractors.
What is the NAICS code for furnace installation?
The NAICS code for furnace installation is 238220, Plumbing, Heating, and Air-Conditioning Contractors.
When did the size standard for NAICS 238220 last change?
The most recent Federal Register rule on record that names NAICS 238220 in the SBA's size standards is "Small Business Size Standards: Adjustment of Monetary-Based Size Standards, Disadvantage Thresholds, and 8(a) Eligibility Thresholds for Inflation" (87 FR 69118), published Nov 17, 2022 and effective Dec 19, 2022.
How much do federal agencies spend under NAICS 238220?
Federal contracts under NAICS 238220 obligated $1,007,817,225 in fiscal year 2025 and $4,211,923,127 in fiscal years 2023 through 2027.
Who are the largest contractors under NAICS 238220?
The contractors with the most obligated under NAICS 238220 in fiscal years 2026 and 2027 are Chenega Enterprise Systems & Solutions, LLC ($37,385,496); North State Mechanical Inc. ($25,046,481); and Mill Creek Firelake JV LLC ($25,037,437).
Which agencies buy the most under NAICS 238220?
The agencies that obligated the most under NAICS 238220 in fiscal years 2026 and 2027 are Department of Veterans Affairs ($353,348,189), Department of the Navy ($185,916,299) and Air Force ($85,039,764).
Which PSC codes are used with NAICS 238220?
The PSC codes with the most obligated under NAICS 238220 in fiscal years 2026 and 2027 are J041 Maintenance, Repair and Rebuilding of Equipment: Refrigeration, Air Conditioning, and Air Circulating Equipment; Z1DA Maintenance of Hospitals and Infirmaries; and Z2JZ Repair or Alteration of Miscellaneous Buildings.
Where is the work under NAICS 238220 performed?
By place of performance, the states with the most contract obligations under NAICS 238220 over the last 12 months are California ($118,718,352), Georgia ($90,024,434) and Virginia ($74,614,765).
What is the latest contract opportunity under NAICS 238220?
The latest contract opportunity under NAICS 238220 is J045--Install Chill Water System Filtration & Steam Condensate Polisher, award notice from Veterans Integrated Service Network 17 (VHA), posted November 6, 2026.
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