332410

Analysis

NAICS 332410 is the 2022 national industry for power boiler and heat exchanger manufacturing, part of 33241 (Power Boiler and Heat Exchanger Manufacturing). Census lists 19 example activities under it in the official index.

Between 2018 and 2023 the number of establishments fell 24% and employment rose 5%. The 2018 count used NAICS 2017, so part of a large move can come from codes being redefined rather than from businesses opening or closing.

County Business Patterns counts 237 US establishments in this code in 2023, employing 23,734 people at an average annual payroll of $81,690 per employee (70th percentile of national industries). 9% of the establishments have fewer than five employees, which points to larger operations.

Its index entries, the activities Census uses to assign businesses to this code, include aftercoolers (i.e., heat exchangers) manufacturing, barometric condensers manufacturing, boiler casings manufacturing and boilers, power, manufacturing, among 19 in all.

Its goods appear in 17 statistical lines of the US tariff schedule, mostly under headings 8402 (steam or other vapor generating boilers (other than central…), 8404 (auxiliary plant for use with boilers of heading 8402 or…) and 8401 (nuclear reactors; fuel elements (cartridges)…). That link is how import data is matched to domestic producers, for example in trade-remedy cases.

Census lists 3 related activities that belong elsewhere, most often in 332420, 333414 and 238220. Businesses that do several things are classified by their primary activity, the one that generates the most value, so check those boundaries before settling on this code.