NAICS UNIVERSITY · Free research for insurance agents
Steam and Air-Conditioning Supply
NAICS 221330 · United States · 2022 edition
This industry comprises establishments primarily engaged in providing steam, heated air, or cooled air. The steam distribution may be through mains.
Start the review with boiler and pressure vessel.
For Steam and Air-Conditioning Supply, the saved research highlights boiler and pressure vessel, underground infrastructure, environmental liability. Confirm how these arise in the actual operation, what controls are used and whether additional services change the proposed coverage.
Questions to ask
- What is the age and inspection status of the boiler and pressure vessel inventory?
- How extensive is the underground distribution network, and when was the last condition assessment?
- What fuels or heat transfer fluids are used, and are there any on-site storage tanks?
- Do customer contracts include service-level guarantees or consequential damage provisions?
- Any prior boiler, main rupture, or environmental incidents in the past five years?
- For Steam and Air-Conditioning Supply, what should the underwriter know about aging boiler or pressure vessel inventory with deferred maintenance or lapsed inspection certifications?
- For Steam and Air-Conditioning Supply, what should the underwriter know about legacy underground mains with known corrosion, prior ruptures, or limited condition assessments?
- For Steam and Air-Conditioning Supply, what should the underwriter know about prior boiler explosion, steam main failure, or environmental contamination losses?
Activities described by this code
Other activities to examine
- Selling and installing warm air heating and air-conditioning equipment: 238220 — Plumbing, Heating, and Air-Conditioning Contractors;
- Merchant wholesale distribution of warm air heating and air-conditioning equipment: 423730 — Warm Air Heating and Air-Conditioning Equipment and Supplies Merchant Wholesalers
Census classification reference
For educational purposes only. AI-generated insurance research and automated logic can contain errors. Independently verify classification and coverage decisions.
Compare another operationInsurance operations research — draft
These establishments generate and distribute steam, heated air, or chilled water through a network of distribution mains and piping to commercial, industrial, or institutional customers. Operations typically involve boilers, heat exchangers, chillers, and pressure vessels at a central plant, with underground or above-grade piping networks delivering the product to end users under long-term service contracts.
Questions to investigate
- What is the age and inspection status of the boiler and pressure vessel inventory?
- How extensive is the underground distribution network, and when was the last condition assessment?
- What fuels or heat transfer fluids are used, and are there any on-site storage tanks?
- Do customer contracts include service-level guarantees or consequential damage provisions?
This insurance research was generated in April 2026. It has not received a complete human review. The October 12, 2026 audit checked codes and titles only, not descriptions or coverage assertions.