221330

Analysis

NAICS 221330 is the 2022 national industry for steam and air-conditioning supply, part of 22133 (Steam and Air-Conditioning Supply). Census lists 13 example activities under it in the official index.

County Business Patterns counts 118 US establishments in this code in 2023, employing 1,957 people at an average annual payroll of $117,526 per employee (90th percentile of national industries). 37% of the establishments have fewer than five employees, which is close to the national mix.

Its index entries, the activities Census uses to assign businesses to this code, include air-conditioning supply, cooled air distribution, distribution of cooled air and distribution of heated air, among 13 in all.

Between 2018 and 2023 the number of establishments fell 8% and employment fell 15%. 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.

For example, selling and installing warm air heating and air-conditioning equipment are classified in 238220 (Plumbing, Heating, and Air-Conditioning Contractors) instead.

Census lists 2 related activities that belong elsewhere, most often in 238220 and 423730. 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.