NAICS UNIVERSITY · Free research for insurance agents
Plumbing and Heating Equipment and Supplies (Hydronics) Merchant Wholesalers
NAICS 423720 · United States · 2022 edition
This industry comprises establishments primarily engaged in the merchant wholesale distribution of plumbing equipment, hydronic heating equipment, household-type water heaters, and/or supplies.
Activities described by this code
Other activities to examine
- Selling and installing plumbing, heating, and air-conditioning equipment: 238220 — Plumbing, Heating, and Air-Conditioning Contractors
- Merchant wholesale distribution of household-type gas and electric appliances (except water heaters and heating stoves (i.e., noncooking)), room air-conditioners, clothes dryers, and/or household-type audio or video equipment: 423620 — Household Appliances, Electric Housewares, and Consumer Electronics 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 purchase plumbing equipment, hydronic heating systems, household water heaters, and related supplies from manufacturers and resell them to plumbing and mechanical contractors, retailers, and commercial buyers. Day-to-day activity typically includes warehouse receiving, inventory management, counter or inside sales, and delivery to job sites or trade customers. Some locations maintain showroom-style displays for contractor selection.
Questions to investigate
- What product categories make up the bulk of sales — standard plumbing supplies, water heaters, or specialty hydronic and radiant heating systems?
- Does the operation distribute any private-label or proprietary-branded products?
- What is the approximate total inventory value on hand at peak, and is the warehouse sprinklered?
- Does the business operate owned delivery vehicles, and if so, how many and what types?
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.