PSC Y1NB: Construction of Heating and Cooling Plants
Y1NB is the product and service code (PSC) federal agencies use for “Construction of Heating and Cooling Plants”, in the “Construction of Buildings” 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
- 2
- Federal contract spending, FY2025
- $249.6 million
- Share of contract dollars to small businesses, since FY2024
- 89%
Open count as of Oct 28, 2026, 5:43 PM ET. The search counts live, so its total can differ by a notice or two.
Open PSC Y1NB contracts with 2+ days to respond
Showing 1 of 2: the soonest due with 2+ days left to respond. The other one is due later, closes within 2 days, is sole-source or has no deadline.
- Construction of Chilled Water Plant and Site Utility Upgrades at VA Medical Center in West Haven, CT
✦ Solicitation W912WJ26RA008 is a phased buy: only Volume I (past performance) is due by the response due date, November 20, 2026, 1:00 PM Eastern.
Due in 23 daysNov 20, 2026, 1:00 PM ESTThe AI summary flags this date. Check SAM.gov.
Where Y1NB sits in the PSC Manual
- Category: Service
- Group Y: Construct of Structures/Facilities
- Group Y1: Construction of Buildings
- Code Y1NB: Construction of Heating and Cooling Plants
NAICS codes used with PSC Y1NB
The NAICS code on a contract sets the size standard for who counts as small. These are the codes agencies pair with Y1NB most often:
| NAICS | Industry | Spent, last 3 years | Open with PSC Y1NB |
|---|---|---|---|
| 236220 | Commercial and Institutional Building Construction | $328.8 million | 1 |
| 238220 | Plumbing, Heating, and Air-Conditioning Contractors | $61.9 million | 1 |
| 237130 | Power and Communication Line and Related Structures Construction | $47.8 million | — |
| 236210 | Industrial Building Construction | $1.2 million | — |
| 221330 | Steam and Air-Conditioning Supply | $149,843 | — |
Open contracts under each code, with any PSC: NAICS 236220 · NAICS 238220 · NAICS 237130 · NAICS 236210 · NAICS 221330
On open notices right now, the most Y1NB work comes from Department of Defense (1) and Department of the Interior (1).
Who buys under PSC Y1NB
Agencies with the most contract dollars under Y1NB over the last three fiscal years, per USAspending.gov. Each name links to that agency's open contracts and buying history:
| Agency | Obligated |
|---|---|
| Department of Veterans Affairs | $333.9 million |
| Department of State | $35.3 million |
| Department of the Army | $25 million |
| Department of the Air Force | $15.1 million |
| Department of the Navy | $11.9 million |
| Federal Bureau of Investigation | $10.6 million |
| Food and Drug Administration | $3.1 million |
| Agricultural Research Service | $2.5 million |
Federal spending under PSC Y1NB by year
| Fiscal year | Contract obligations |
|---|---|
| FY2024 | $103.7 million |
| FY2025 | $249.6 million |
| FY2026 (incomplete) | $86.6 million |
Headline figures use FY2025, the last complete year. FY2026 is still incomplete and will rise until about early January 2027 as Defense data arrives: USAspending.gov publishes Defense contracts 90 days after they're signed.
Who wins PSC Y1NB contracts
| Company | Obligated, last 3 years |
|---|---|
| SGJV2, LLC | $79.7 million |
| Saw Greenland, LLC | $70.6 million |
| Veterans Contracting Group, Inc. | $54.2 million |
| Energy Services Group Inc | $46.2 million |
| Vetspace Construction Services, LLC | $29.1 million |
| Calvary Contracting Inc | $26.2 million |
| Meptek Muhendislik Taahhut Ticaret Limited Sirketi | $19.3 million |
| Winspear Construction LLC. | $16.7 million |
| Mik Construction Inc | $16 million |
| Esa South, Inc. | $9.9 million |
Linked names have a FedReady profile, which shows the NAICS codes a business is registered as small under. Most large companies have none.
Large prime contractors (companies that hold the contract with the agency) subcontract part of their work to small businesses. See which primes subcontract, by NAICS code.
Research PSC Y1NB work
By the NAICS codes this work goes with, the one with the most spending first: who won recently, contracts ending soon, agencies' planned buys and the large primes that subcontract it, nationwide. Each code shows only the pages that exist for it:
- 236220 Commercial and Institutional Building Construction: who won recently · contracts ending in the next 12 months · planned buys · large primes that subcontract
- 238220 Plumbing, Heating, and Air-Conditioning Contractors: who won recently · contracts ending in the next 12 months · planned buys · large primes that subcontract
- 237130 Power and Communication Line and Related Structures Construction: who won recently · planned buys · large primes that subcontract
Related PSC codes
- Y111 Construction of Office Buildings
- Y112 Construct/Conf Space & Fac
- Y119 Construct/Other Admin & SVCS BLDGS
- Y121 Construct/Air Traffic Cont Towers
- Y122 Construct/Air Traffic Training Fac
- Y123 Construct/Radar & Navigational Fac
- Y124 Construction of Airport Runways
- Y125 Construction of Airport Terminals
- Y126 Construct/Missile System Facilities
- Y127 Construct/Elct & Comm System Fac
Frequently asked questions
What is PSC Y1NB?
Y1NB is the service code in the federal Product and Service Code (PSC) Manual named “Construction of Heating and Cooling Plants”, under Y (Construct of Structures/Facilities) and Y1 (Construction of Buildings). 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 Y1NB?
Most federal contract dollars under PSC Y1NB go with NAICS 236220 (Commercial and Institutional Building Construction), 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 Y1NB?
Contract opportunities are posted on SAM.gov with their PSC and NAICS codes. 2 open notices use PSC Y1NB right now. FedReady can match new ones to your business and email you, free.
Keep going
Sources: SAM.gov Contract Opportunities, USAspending.gov and the PSC Manual. How we count.