North American Industry Classification System
U.S. imports of Air-Conditioning, Warm Air Heating & Commercial Refrigeration Equipment (NAICS 333415) totaled $2.1B in August 2026, imported from 83 countries.
Importers of Air-Conditioning, Warm Air Heating & Commercial Refrigeration Equipment paid $218.4M in duties in August 2026, an average duty rate of 10.63% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataSplit-system air conditioners, packaged rooftop units, warm-air furnaces, and commercial refrigeration cases all converge in this NAICS category, making it one of the most trade-remedy-exposed segments of the HVAC sector. Finished air-conditioning equipment and compressors sourced from China are subject to Section 301 tariffs, and certain refrigerant-containing systems also require EPA compliance under the Clean Air Act's refrigerant management provisions. Commercial refrigeration equipment — including display cases and reach-in coolers used in grocery and foodservice — is a high-volume import segment with complex HTS classification driven by refrigerant type, capacity, and configuration.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
82.3K import shipments a month
Equipment pre-charged with refrigerants is subject to EPA regulations under Section 608 of the Clean Air Act, which governs refrigerant handling and venting prohibitions. Importers of systems containing hydrofluorocarbons (HFCs) should also monitor EPA's AIM Act rulemaking, which is phasing down HFC production and consumption and may affect the admissibility or marketability of certain refrigerant blends.
Combination units — such as heat pumps that provide both heating and cooling — are classified based on their principal function or, where that is ambiguous, under the HTS heading that appears last in numerical order among equally applicable headings. Because the classification outcome affects both duty rates and Section 301 exposure, importers of multi-function systems should obtain a binding ruling from CBP or consult a licensed customs broker before the first shipment.
National industry 1 of 3 in naics industry 33341
National industry 333415 · $2.1B of $2.6B
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ImportsExports
Imports
$2.1BYoY · free account
Exports
$556.6MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $21.6B of Air-Conditioning, Warm Air Heating & Commercial Refrigeration Equipment and exported $5.6B.
Through August 2026. Source: U.S. Census Bureau.
Imports · August 2026
origin
Mexico and China together supply 62% of it. China pays 25.4% duty; Italy 2.6%.
customs district
Census does not publish district detail for this classification system.
destination
Census publishes state breakdowns for NAICS to the 4-digit level only. See NAICS 3334 for those.
entry
Census does not publish port detail for this classification system.