NAICS Code for HVAC Company
The NAICS code for an HVAC company is 238220, Plumbing, Heating, and Air-Conditioning Contractors. It covers installing, servicing and repairing heating, cooling, ventilation and refrigeration systems in buildings. Plumbers share the same code, so HVAC and plumbing companies compete under one code on SAM.gov. Duct cleaning alone is 561790, and commercial refrigeration repair without installation is 811310.
Related codes to add
Most businesses list several NAICS codes. Use 238220 as your primary if it covers most of your revenue, and add these when they describe work you also do:
| Code | Use it when | Size standard |
|---|---|---|
| 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance | You repair commercial refrigeration or other equipment without installing building systems. | $12.5 million or less in receipts |
| 561790 Other Services to Buildings and Dwellings | You only clean ducts and ventilation systems. | $9 million or less in receipts |
| 541330 Engineering Services | You design mechanical systems as an engineering firm and don't install them. | $25.5 million or less in receipts |
Government contracts for this work
- Open federal contracts, top buyers and winners for this kind of work
- NAICS code for a plumbing business (also 238220)
- NAICS code for a fire protection company (also 238220)
How to choose
Your primary NAICS code should match the work that brings in most of your revenue, and it sets which size standard applies to you for most set-aside contracts. Read each code's Census definition before you register. Our guide on how to choose NAICS codes covers the trade-offs. To see whether you count as small under these codes, try the size standard checker.
Frequently asked questions
What is the NAICS code for an HVAC company?
The NAICS code for an HVAC company is 238220, Plumbing, Heating, and Air-Conditioning Contractors. It covers installing, servicing and repairing heating, cooling, ventilation and refrigeration systems in buildings. Plumbers share the same code, so HVAC and plumbing companies compete under one code on SAM.gov. Duct cleaning alone is 561790, and commercial refrigeration repair without installation is 811310.
What is the SBA size standard for NAICS 238220?
A business counts as small under NAICS 238220 with $19 million or less in average annual receipts, under the SBA's table of size standards. Federal contracts set aside for small businesses under this code are limited to firms that meet it.
Can I list more than one NAICS code?
Yes. In your SAM.gov registration you pick one primary NAICS code and can add as many others as describe work you can actually do. Add every code below that fits, because agencies search and set aside contracts by code.