PSC 4120: Air Conditioning Equipment
4120 is the product and service code (PSC) federal agencies use for air conditioning equipment, in the refrig, air condit/circulat eqpt group. Here are the contracts open under it now, the NAICS codes it pairs with, and who buys and wins this work.
- Open contracts now
- 9
- Spending, FY2026
- $113.8 million
- Share to small businesses
- 56%
Open contracts with PSC 4120, due soonest
- Modular Integrated Terminals (MIT)
Due in 3 daysOct 13, 2026
- Environmental Control System (ECS)
✦ The Army (Letterkenny Army Depot, Pennsylvania) is doing market research to find sources for Environmental Control Systems (part number 13645428-1) for the AN/TPY-2 radar's…
Due in 4 daysOct 13, 2026
- Compressor Units and Spares
✦ NSWC Indian Head Division (Navy) is running a sources sought survey for Trane OEM compressor units and spare parts to directly replace parts in its existing HVAC systems.
Due in 5 daysOct 14, 2026
- SPECIAL Duplex Strainer - MPLS
Due in 6 daysOct 15, 2026
- CHILLER
✦ DLA Weapons Support Mechanicsburg is asking for quotes on a CHILLER (an air-conditioning/refrigeration unit) built to a Navy drawing, under emergency acquisition authority.
Due in 24 daysNov 2, 2026
- BPA - Air Conditioning and Warm Air Heating PSC 4120, 4130
✦ Naval Surface Warfare Center Indian Head Division (Maryland) wants to set up Master Blanket Purchase Agreements (standing agreements for repeat orders) with small businesses…
Due in 763 daysNov 11, 2028
Where 4120 sits in the PSC Manual
- Category: Product
- Group 41: Refrig, Air Condit/Circulat Eqpt
- Code 4120: Air Conditioning Equipment
NAICS codes used with PSC 4120
The NAICS code on a contract sets the size standard for who counts as small. These are the codes agencies pair with 4120 most often:
| NAICS | Industry | Spent, last 3 years |
|---|---|---|
| 333415 | Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing | $219.1 million |
| 336413 | Other Aircraft Parts and Auxiliary Equipment Manufacturing | $56 million |
| 238220 | Plumbing, Heating, and Air-Conditioning Contractors | $50.4 million |
| 339999 | All Other Miscellaneous Manufacturing | $8.6 million |
| 334290 | Other Communications Equipment Manufacturing | $7.1 million |
| 561210 | Facilities Support Services | $5.7 million |
Who buys under PSC 4120
Agencies with the most contract dollars under 4120 over the last three fiscal years, per USAspending.gov:
| Agency | Obligated |
|---|---|
| Department of the Navy | $107.8 million |
| Department of the Air Force | $99.1 million |
| Defense Logistics Agency | $64.3 million |
| Department of the Army | $30.1 million |
| Department of Veterans Affairs | $15 million |
| Federal Prison System / Bureau of Prisons | $10.9 million |
| National Aeronautics and Space Administration | $8.7 million |
| National Institutes of Health | $8.2 million |
On open notices right now, the most 4120 work comes from Dept of Defense, Department of State and Department of Veterans Affairs.
Federal spending under PSC 4120 by year
| Fiscal year | Contract obligations |
|---|---|
| FY2024 | $118.8 million |
| FY2025 | $146.8 million |
| FY2026 | $113.8 million |
| FY2027 (so far) | $28,045 |
Who wins PSC 4120 contracts
| Company | Obligated, last 3 years |
|---|---|
| Johnson Controls Navy Systems, LLC | $93.1 million |
| Kuog Corp | $28.9 million |
| Simulation Technologies, Inc | $24.8 million |
| HDT Expeditionary Systems Inc | $23.2 million |
| Atap Inc | $17.3 million |
| Cam Management and Services, LLC | $16.6 million |
| Snowbird Technologies Inc. | $11.7 million |
| Trane U.S. Inc. | $10.4 million |
| Advanced Cooling Technologies Inc | $8.5 million |
| Amerind BG JV, LLC | $6.9 million |
Related PSC codes
- 4110 Refrigeration Equipment
- 4130 Refrigeration and Air Conditioning Components
- 4140 Fans, Air Circulators, and Blower Equipment
- 4150 Vortex Tubes and Other Related Cooling Tubes
Frequently asked questions
What is PSC 4120?
4120 is the product code in the federal Product and Service Code (PSC) Manual for air conditioning equipment, under 41 (Refrig, Air Condit/Circulat Eqpt). Agencies put a PSC on every contract to record what they bought.
What is the difference between a PSC and a NAICS code?
A PSC describes what the government is buying. A NAICS code describes the industry of the business doing the work, and it sets the SBA size standard for small business set-asides. Every contract notice has both.
Which NAICS code goes with PSC 4120?
Most federal contract dollars under PSC 4120 go with NAICS 333415 (Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing), according to USAspending.gov. The contracting officer picks the NAICS code for each solicitation, so check the notice.
How do I find contracts that use PSC 4120?
Contract opportunities are posted on SAM.gov with their PSC and NAICS codes. 9 open notices use PSC 4120 right now. FedReady can match new ones to your business and email you, free.