U.S. imports of Parts of Air Conditioning Machines (NESOI) (HS 841590) totaled $838.4M in August 2026, imported from 64 countries.
Importers of Parts of Air Conditioning Machines (NESOI) paid $120.1M in duties in August 2026, an average duty rate of 14.46% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataChina-origin parts under this heading are subject to Section 301 tariffs, making supplier diversification a live concern for HVAC importers. The US tariff schedule breaks this heading into highly specific lines covering chassis and outer cabinets (8415904000), copper and non-copper evaporator coils (8415908010, 8415908020, 8415908025), automotive AC parts (8415908045), heat pump parts by material (8415908050, 8415908065, 8415908070), and residual AC parts (8415908085, 8415909000). Mexico leads supply, followed by China and Thailand, reflecting deep North American HVAC manufacturing integration alongside Asian sourcing. Correct classification hinges on whether the part is dedicated to a heat pump, an automotive system, or a conventional AC unit, as each has its own tariff line.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
40.2K import shipments a month
Classification turns on the equipment the coil is designed for. Coils dedicated to conventional air conditioning units fall under the evaporator coil lines (8415908010–8415908025), while coils designed for heat pumps are directed to the heat pump parts lines (8415908050–8415908070). Dual-function components may require a binding ruling from CBP. Consult a licensed customs broker for guidance on specific components.
Yes. Parts of air conditioning machines originating in China are generally subject to Section 301 tariffs. Importers sourcing from Mexico or Thailand may avoid this exposure, which partly explains Mexico's position as the leading supplier under this heading.
Subheading 1 of 6 in heading 8415
Subheading 841590 · $838.4M of $1.1B
ImportsExports
Imports
$838.4MYoY · free account
Exports
$124.5MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $9.0B of Parts of Air Conditioning Machines (NESOI) and exported $1.3B.
Through August 2026. Source: U.S. Census Bureau.
Trade Directory
List your company under HS 841590 — Parts of Air Conditioning Machines (NESOI), so the companies trading it can find you. Be the first supplier listed.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 8415908085 | Parts of Air Conditioning Machines, NESOI | $335.8M | 15.13% | 94.76% | $50.8M |
| 8415908070 | Parts of Heat Pumps, NESOI | $245.4M | 16.02% | 94.86% | $39.3M |
| 8415908045 | Parts of Automotive Air Conditioners | $160.0M | 9.38% | 56.89% | $15.0M |
| 8415908020 | Air Conditioning Evaporator Coils, NESOI | $38.4M | 14.45% | 93.60% | $5.6M |
| 8415908050 | Parts of Heat Pumps, of Copper or Copper Alloys | $26.7M | 18.59% | 97.56% | $5.0M |
| 8415904000 | Chassis, Chassis Bases & Outer Cabinet, Prt of A/Con | $15.0M | 20.08% | 98.29% | $3.0M |
| 8415908010 | Air Cnditioning Evprtr Coils, of Copper/Cpper Allys | $9.1M | 15.80% | 97.37% | $1.4M |
| 8415908025 | Air Conditioning Evaporator Coils | — | -- | -- | -- |
| 8415908065 | Parts of Heat Pumps | — | -- | -- | -- |
Chassis, Chassis Bases & Outer Cabinet, Prt of A/Con
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8415909000 | Parts, NESOI, of Air Conditioning Machines | $121.0M |
| 8415908025 | Air Conditioning Evaporator Coils | $3.5M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Imports · August 2026
origin
Mexico and China together supply 76% of it. China pays 21.9% duty; Canada 6.2%.
customs district
destination
entry
rate provision · imports
11.8% enters free of duty; duty collected equals 14.46% of imports for consumption.