> Enrich.chat gives AI agents verified work emails and mobiles. To use it from an agent, read https://enrich.chat/agents.md . This is the Markdown version of https://enrich.chat/naics/238220/ # NAICS code 238220: Plumbing, Heating, and Air-Conditioning Contractors The companies classified under NAICS 238220, where they are based, how big they are and how the code maps to SIC. By Enrich.chat Editorial. Updated October 22, 2026. **Short answer:** NAICS 238220 is the code for Plumbing, Heating, and Air-Conditioning Contractors, in sector 23: Construction. The companies counted under it are mostly very small: 66% have 50 or fewer employees, and 83% are headquartered in the United States. ## What is NAICS 238220? NAICS 238220 is the code for Plumbing, Heating, and Air-Conditioning Contractors. It belongs to sector 23: Construction. NAICS, the North American Industry Classification System, is the standard U.S. government agencies use to sort businesses by what they mainly do, and each digit narrows the category. Most of the companies counted also carry SIC 1711, Plumbing, heating and air conditioning contractor, in the older SIC system (85%). NAICS is a North American system, so companies outside the US, Canada and Mexico are placed in it by classification. - 66% of the companies counted have 50 or fewer employees, and the middle one is in the 11 to 50 range. - The largest group is headquartered in the United States (83%). Within the US, California is the biggest state (13%). - Most were founded in the 2000s (23%), then the 2010s (20%). **Figure: How NAICS 238220 is built.** The code 238220 split into its parts: sector 23, then subsector, industry group, NAICS industry and U.S. industry. *The six digits of NAICS 238220. Each digit narrows the category.* ## Which companies are classified under NAICS 238220? The biggest by headcount range include Johnson Controls International, Trinasolar, Galfar Engineering & Contracting SAOG, Comfort Systems Usa and Vaillant Deutschland. Names link to a company profile where we have one. | Company | Headquarters | Employees | | --- | --- | --- | | [Johnson Controls International](https://enrich.chat/company/johnson-controls-international/) | Cork, Ireland | 10,001+ | | [Galfar Engineering & Contracting SAOG](https://enrich.chat/company/galfar-engineering-and-contracting-saog/) | Muscat Oman Muscat, Oman | 10,001+ | | Comfort Systems Usa | Houston, TX | 10,001+ | | Vaillant Deutschland | Remscheid, Germany | 10,001+ | | Monadelphous | Perth, Australia | 5,001 to 10,000 | | Black & Mcdonald | Toronto, Canada | 5,001 to 10,000 | | Southland Industries | Garden Grove, CA | 5,001 to 10,000 | | Acco Engineered Systems | Pasadena, CA | 5,001 to 10,000 | | Monomark Engineering | Chittorgarh, India | 5,001 to 10,000 | | Wrench Group | Marietta, GA | 5,001 to 10,000 | | Alishar Contracting | Mecca, Saudi Arabia | 5,001 to 10,000 | | Armstrong Fluid Technology | Toronto, Canada | 1,001 to 5,000 | | Al Ali Construction And Development | Ras Al Khaimah, United Arab Emirates | 1,001 to 5,000 | | Plan Group | Vaughan, Canada | 1,001 to 5,000 | | Ainsworth | Toronto, Canada | 1,001 to 5,000 | | Black Cat Engineering & Construction W.L.L | Doha Al Dawha, Qatar | 1,001 to 5,000 | | Macdonald-Miller Facility Solutions | Seatac, WA | 1,001 to 5,000 | | Bidvest Facilities Management | Centurion, South Africa | 1,001 to 5,000 | | Stulz | Hamburg, Germany | 1,001 to 5,000 | | Reliance Home Comfort | Toronto, Canada | 1,001 to 5,000 | | Service Experts | Richardson, TX | 1,001 to 5,000 | | Blue Raven Solar | Orem, UT | 1,001 to 5,000 | | Shar | Riyadh, Saudi Arabia | 1,001 to 5,000 | | Harder Mechanical Contractors | Portland, OR | 1,001 to 5,000 | | Mckenney's | Atlanta, GA | 1,001 to 5,000 | The table shows the 25 biggest by headcount range, with ties broken by audience size. The charts and percentages below cover every company counted for this page, not just these 25, and companies with fewer than 11 employees are not counted. Headquarters is the location on each company's public profile. ## Where are NAICS 238220 companies based? The largest groups are headquartered in the United States (83%), Italy (4%) and the United Kingdom (3%). **Figure: Where companies in NAICS 238220 are based.** Bars for the share of counted companies in NAICS 238220 headquartered in each country: United States 83%, Italy 4%, United Kingdom 3%, Canada 2%, Germany 2%, Australia 1%. *Share of counted companies in NAICS 238220 by headquarters country.* Within the United States, California (13%), Texas (10%) and Florida (9%) lead. **Figure: US headquarters of companies in NAICS 238220, by state.** A tile map of the United States shaded by the share of counted US companies in NAICS 238220 headquartered in each state. The largest are California 13%, Texas 10%, Florida 9%. *Share of counted US companies in NAICS 238220 by headquarters state. The three largest states are outlined.* ## How big are the companies counted for NAICS 238220? 66% of them have 50 or fewer employees, and the middle one is in the 11 to 50 range. Companies with fewer than 11 employees are not counted. **Figure: Size of companies in NAICS 238220.** Seven columns for the share of counted companies in NAICS 238220 in each employee range: 11 to 50 66%, 51 to 200 25%, 201 to 500 5%, 501 to 1,000 1%, 1,001 to 5,000 1%, 5,001 to 10,000 0%, 10,001+ 0%. *Share of counted companies in NAICS 238220 in each employee range.* ## How old are NAICS 238220 companies? Most were founded in the 2000s (23%), then the 2010s (20%). **Figure: When companies in NAICS 238220 were founded.** Eight columns for the share of counted companies in NAICS 238220 founded in each era: Before 1960 12%, 1960s 5%, 1970s 9%, 1980s 14%, 1990s 16%, 2000s 23%, 2010s 20%, 2020s 2%. *Share of counted companies in NAICS 238220 by the era they were founded in, for the ones that list a founding year.* ## How do NAICS 238220 companies describe themselves? A code is assigned by classification, and a company does not choose its own, so the label a company uses for itself can differ. The most common labels here are Construction (51%), Individual and Family Services (19%) and Consumer Services (8%). **Figure: How companies in NAICS 238220 describe themselves.** Bars for the share of counted companies in NAICS 238220 that give each industry on their public profile: Construction 51%, Individual and Family Services 19%, Consumer Services 8%, Renewable Energy Semiconductor Manufacturing 7%, Facilities Services 7%, Industrial Machinery Manufacturing 5%. *Share of counted companies in NAICS 238220 by the industry they list on their public profile.* ## NAICS 238220 and the SIC system NAICS replaced SIC in 1997, but the two do not line up one to one: companies filed under one NAICS code can carry several SIC codes. These are the ones seen most. | Code | Title | Share of counted | | --- | --- | --- | | SIC 1711 | Plumbing, heating and air conditioning contractor | 85% | | [SIC 1731](https://enrich.chat/naics/238210/) | Electrical contractor | 3% | ## Where NAICS codes come from NAICS is maintained by the U.S. Census Bureau with Canada and Mexico and revised every five years; the current edition is NAICS 2022. To check exactly what a code includes, search the [official NAICS index](https://www.census.gov/naics/) or read the Census Bureau's [guide to understanding NAICS](https://www.census.gov/programs-surveys/economic-census/year/2022/guidance/understanding-naics.html). Pick a code by what a company mostly does, not by who it sells to. ## How do you reach the people at NAICS 238220 companies? The people to talk to are usually owners, operations and procurement leaders. You can build the list from this code in three prompts to your AI agent. ### 1. Count them (free) Counting who matches never uses credits. ```text Use www.enrich.chat to count the companies with NAICS code 238220 (Plumbing, Heating, and Air-Conditioning Contractors) ``` ### 2. Find the people (5 credits per person) Name the roles you sell to. Each person returned is 5 credits, and name, title and company are included. ```text Use www.enrich.chat to find the owners, operations and procurement leaders at companies with NAICS code 238220, with their titles ``` ### 3. Get their work emails (10 credits each) An email is 10 credits only when one is found. Every email comes with a status: verified, catch-all or unknown. ```text Use www.enrich.chat to find the work emails for these people and tell me which ones are verified ``` ## More to explore Codes next to it: [NAICS 238210: Electrical Contractors and Other Wiring](https://enrich.chat/naics/238210/) Others in sector 23: [NAICS 236220: Commercial and Institutional Building](https://enrich.chat/naics/236220/)[NAICS 238990: All Other Specialty Trade Contractors](https://enrich.chat/naics/238990/)[NAICS 236115: New Single-Family Housing Construction](https://enrich.chat/naics/236115/)[NAICS 238160: Roofing Contractors](https://enrich.chat/naics/238160/)[NAICS 237310: Highway, Street, and Bridge Construction](https://enrich.chat/naics/237310/)[NAICS 237210: Land Subdivision](https://enrich.chat/naics/237210/)[NAICS 236118: Residential Remodelers](https://enrich.chat/naics/236118/)[NAICS 238320: Painting and Wall Covering Contractors](https://enrich.chat/naics/238320/) NAICS 238220 by state: [California](https://enrich.chat/naics/238220/california/)[Texas](https://enrich.chat/naics/238220/texas/)[Florida](https://enrich.chat/naics/238220/florida/)[Ohio](https://enrich.chat/naics/238220/ohio/)[North Carolina](https://enrich.chat/naics/238220/north-carolina/)[Georgia](https://enrich.chat/naics/238220/georgia/)[Pennsylvania](https://enrich.chat/naics/238220/pennsylvania/)[Illinois](https://enrich.chat/naics/238220/illinois/)[Arizona](https://enrich.chat/naics/238220/arizona/)[Virginia](https://enrich.chat/naics/238220/virginia/)[Tennessee](https://enrich.chat/naics/238220/tennessee/) ## Frequently asked questions ### What is NAICS code 238220? NAICS 238220 is the code for Plumbing, Heating, and Air-Conditioning Contractors, in sector 23: Construction. ### What is the SIC code for NAICS 238220 (Plumbing, Heating, and Air-Conditioning Contractors)? 85% of the companies counted carry SIC 1711 (Plumbing, heating and air conditioning contractor), but the two systems do not map one to one. ### Which companies are classified under NAICS 238220? The biggest by headcount range include Johnson Controls International, Trinasolar, Galfar Engineering & Contracting SAOG, Comfort Systems Usa and Vaillant Deutschland. The page lists 25 with links to their profiles where we have them. ### Where are NAICS 238220 companies based? The largest groups are headquartered in the United States (83%), Italy (4%) and the United Kingdom (3%). ### How big are the companies in NAICS 238220? 66% have 50 or fewer employees, and the middle one is in the 11 to 50 range. Companies with fewer than 11 employees are not counted. ### Is NAICS 238220 the same as a SIC code? No. NAICS replaced SIC as the U.S. federal standard in 1997, and the two do not map one to one. The SIC code seen most among these companies is 1711. ## Try this prompt Find the people at NAICS 238220 companies ```text Use www.enrich.chat to find the owners, operations and procurement leaders at companies with NAICS code 238220, with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [NAICS 238210](https://enrich.chat/naics/238210/) - [NAICS 238220 in California](https://enrich.chat/naics/238220/california/) - [NAICS 238220 in Texas](https://enrich.chat/naics/238220/texas/) - [NAICS 238220 in Florida](https://enrich.chat/naics/238220/florida/) - [NAICS 238220 in Ohio](https://enrich.chat/naics/238220/ohio/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)