# NAICS 423730: Warm Air Heating and Air-Conditioning Equipment and Supplies Merchant Wholesalers

Breadcrumb: [NAICS codes](https://bidrover.com/naics) › [423730 Warm Air Heating and Air-Conditioning Equipment and Supplies Merchant Wholesalers](https://bidrover.com/naics/423730)

This industry comprises establishments primarily engaged in the merchant wholesale distribution of warm air heating and air-conditioning equipment and supplies.

- NAICS code: 423730
- Title: Warm Air Heating and Air-Conditioning Equipment and Supplies Merchant Wholesalers
- Sector: 42 Wholesale Trade
- Subsector: 423 Merchant Wholesalers, Durable Goods
- Industry group: 4237 Hardware, and Plumbing and Heating Equipment and Supplies Merchant Wholesalers
- SBA size standard: 175 employees
- Open bids on BidRover: 0

## Open bids (0)

No open bids cite this code right now.

## Frequently asked questions

### What is NAICS code 423730?

NAICS 423730 is "Warm Air Heating and Air-Conditioning Equipment and Supplies Merchant Wholesalers" in the 2022 North American Industry Classification System, in sector 42 (Wholesale Trade). This industry comprises establishments primarily engaged in the merchant wholesale distribution of warm air heating and air-conditioning equipment and supplies.

### What is the SBA size standard for NAICS 423730?

A business is small under NAICS 423730 at or below 175 employees, including affiliates (13 CFR 121.201). Confirm the standard named in each solicitation.

### How many government bids are open under NAICS 423730?

No open bid in BidRover cites NAICS 423730 right now. Many state and local notices do not list a NAICS code, so a keyword alert for this work catches more of them.

### How do I get alerts for NAICS 423730 bids?

Save an alert on this page. A free account gets new matching bids by weekly email; the Team plan ($19/mo) sends daily alerts with match scores, the buyer, source link and documents.

## Related NAICS codes

- [423620 Household Appliances, Electric Housewares, and Consumer Electronics Merchant Wholesalers](https://bidrover.com/naics/423620)
- [423720 Plumbing and Heating Equipment and Supplies (Hydronics) Merchant Wholesalers](https://bidrover.com/naics/423720)
- [423740 Refrigeration Equipment and Supplies Merchant Wholesalers](https://bidrover.com/naics/423740)
- [424690 Other Chemical and Allied Products Merchant Wholesalers](https://bidrover.com/naics/424690)
- [238220 Plumbing, Heating, and Air-Conditioning Contractors](https://bidrover.com/naics/238220)
- [423710 Hardware Merchant Wholesalers](https://bidrover.com/naics/423710)

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Code titles and definitions: U.S. Census Bureau, North American Industry Classification System (NAICS), 2022 (https://www.census.gov/naics/). Size standards: U.S. Small Business Administration, Small Business Size Standards, 13 CFR 121.201, eCFR text current as of 2026-10-21 (https://www.ecfr.gov/current/title-13/section-121.201).

BidRover lists bids from official public sources. It is not an issuing authority; confirm the NAICS code and size standard named in each solicitation.