423730 — Warm Air Heating and Air-Conditioning Equipment and Supplies Merchant Wholesalers
Description
This industry comprises establishments primarily engaged in the merchant wholesale distribution of warm air heating and air-conditioning equipment and supplies.
Illustrative Examples
- Air pollution control equipment and supplies merchant wholesalers
- Nonportable electric baseboard heaters merchant wholesalers
- Air-conditioning equipment (except room units) merchant wholesalers
- Warm air central heating equipment merchant wholesalers
- Automotive air-conditioners merchant wholesalers
- Ductless heating and air-conditioning system equipment merchant wholesalers
Overview Facts
| NAICS Code | 423730 |
|---|---|
| Industry Title | Warm Air Heating and Air-Conditioning Equipment and Supplies Merchant Wholesalers |
| SBA Size Standard | 175 employees |
| IRS PBA Code | 423700 (rolled-up match) |
| Sectors Hierarchy | Sector 42 → 423 → 4237 |
| Source / Verified | US Census 2022 NAICS Manual / 2026-06-28 |
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 5075 - Warm Air Heating and Air-Conditioning Equipment and Supplies (via SIC1987:5075→NAICS1997:42173→2002:423730→2007:423730→2012:423730→2017:423730→2022:423730)
Related Resources & Compliance Guides
Further regulatory reference links for NAICS code 423730:
- Sector 42 Directory Hub — List of related industries in the Wholesale Trade sector.
- SIC ↔ NAICS Crosswalk Tool — Look up mappings between legacy SIC codes and modern classifications.
- SBA Size Standards Guide — Complete rules and averaging periods for small business classifications.
- Calculating Annual Receipts Guide — Detailed worked example of revenue calculation rules.
- IRS Principal Business Activity Guide — How NAICS codes map to corporate and entity tax filings.
Related Industries in 4237
Frequently Asked Questions (FAQ)
Is 423730 a valid 2022 NAICS code?
NAICS 423730 is 'Warm Air Heating and Air-Conditioning Equipment and Supplies Merchant Wholesalers', a 2022 U.S. national industry under Sector 42 (Wholesale Trade); the SBA small-business size standard is 175 employees.
What is the SBA size standard for NAICS 423730?
The SBA small business size standard for NAICS 423730 is 175 employees (based on employees).
What is the legacy SIC code mapping for 423730?
NAICS code 423730 maps to the legacy 1987 SIC codes: 5075 - Warm Air Heating and Air-Conditioning Equipment and Supplies.