By Outrider Editorial Team · Updated August 20, 2026
Official definition
This industry comprises establishments primarily engaged in manufacturing power boilers and heat exchangers. Establishments in this industry may perform installation in addition to manufacturing power boilers and heat exchangers.
FY2025 obligations
$2.2B
Contract actions
470
IDVs
5
Top buying agencies
- Department of Defense$2.2B
- Department of Justice$1.3M
- Department of Homeland Security$878.9K
- Department of Veterans Affairs$766.1K
- Department of the Interior$555.4K
FY2025 federal contract obligations, USAspending.gov
NAICS 332410 obligated $2.2 billion in FY2025 across 470 contract actions, an average of $4.7 million each. DoD is essentially the entire code. DOJ, DHS, VA, and Interior each obligated about a million dollars. What makes this code unusual is not the concentration, it is that only 5 IDVs exist across $2.2 billion. Almost nothing here is ordered off a vehicle.
What belongs here
Power boilers and heat exchangers, including installation performed by the manufacturer. Federal demand is dominated by naval propulsion and auxiliary steam plant equipment and by heat transfer equipment for shipboard and shore power systems.
- Air conditioning, warm air heating, and commercial refrigeration equipment is 333415.
- Valves for those systems are 332911.
- Installation contracted separately from the equipment purchase is construction work, not manufacturing.
Competing in this code
5 IDVs and 470 actions at nearly $5 million apiece describes a small qualified supplier base winning individually competed and sole-source awards. Entry is gated on code stamps and nuclear-grade quality programs, not on capacity or size. ASME Section I and Section VIII certification is the minimum, and naval nuclear component work adds a quality program that is expensive to stand up and slow to audit. Because the buyer cannot easily substitute, a supplier who clears those gates holds a defensible position for a very long time. The 750-employee standard is not what limits competition in this code.
Frequently Asked
NAICS 332410 questions, answered.
What is the SBA size standard for NAICS 332410?
SBA sets it at 750 employees, counted as a 24-month average headcount across your company and every affiliate, not revenue. At or under that number you are small on NAICS 332410 solicitations and eligible for the set-asides in this code.
Which agencies buy boilers and heat exchangers under NAICS 332410?
FY2025 obligations: DoD ($2.2 billion), DOJ ($1 million). DoD is effectively the whole market, concentrated in naval propulsion and auxiliary steam plant equipment.
Why does NAICS 332410 have only 5 IDVs?
Because the supplier base is small and qualified, and the equipment is bought individually rather than ordered from a catalog. 470 actions carried $2.2 billion in FY2025, an average of $4.7 million each. There is no reason to build a multiple-award vehicle around a market with few qualified sources and large, discrete requirements.
What certifications gate entry into NAICS 332410?
ASME Section I and Section VIII code stamps at minimum, plus a quality program acceptable to the buying activity. Naval nuclear component work requires an additional quality program that is expensive to establish and slow to audit. Those gates, not the 750-employee size standard, are what limit competition in this code.
Register Under NAICS 332410
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