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HSChapter 38
U.S. imports of refrigerant mixtures containing 30% or more hfc-134a (1,1,1,2-tetrafluoroethane), excluding hfos (HS 382764) totaled $254K in July 2026, traded with 3 countries.
Importers of Refrigerant Mixtures Containing 30% or More HFC-134a (1,1,1,2-Tetrafluoroethane), Excluding HFOs paid $33K in duties in July 2026 — an effective duty rate of 14% on $243K in dutiable value, based on actual customs collections rather than the published tariff schedule. Refrigerant Mixtures Containing 30% or More HFC-134a (1,1,1,2-Tetrafluoroethane), Excluding HFOs imports of $254K in July 2026 ran 322% above the year-to-date monthly average of $60K.
Last updated: July 2026 dataHFC-134a-dominant blends at 30% or more by mass — without HFO content — are classified here, covering formulations used in automotive air conditioning, medium-temperature refrigeration, and certain industrial cooling systems. India and China are the leading US suppliers, together accounting for the bulk of import volume, with Mexico and Taiwan also contributing meaningfully to supply. The explicit HFO exclusion mirrors the structure of adjacent subheadings and is critical for distinguishing these blends from newer low-GWP alternatives that incorporate HFO-1234yf or similar compounds. EPA AIM Act allowance compliance is mandatory, and Chinese-origin goods are subject to Section 301 measures.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
4 shipments/mo
Several newer refrigerant blends marketed as drop-in replacements for R-134a incorporate small percentages of HFOs to reduce global warming potential. Even if HFC-134a remains the dominant component at 30% or more, the presence of any HFO content disqualifies the blend from this subheading and redirects it to the HFO-containing mixture subheadings. Importers must scrutinize the full composition to avoid misclassification.
India has developed substantial fluorochemical manufacturing capacity and has become a major exporter of HFC blends to the US market. Because India is not a US free-trade-agreement partner, standard MFN duty rates apply, and importers should monitor any trade-remedy proceedings or AIM Act enforcement actions that could affect sourcing economics from that origin.
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Subheading 3 of 19 in heading 3827
Subheading 382764 · $254K of $6.7M
ImportsExports
Imports
$254KYoY · Pro
Exports
$100KYoY · Pro
12-mo low · imports
YoY · ProFewer than 6 of the last 12 months reported trade above $500K; the trend chart is not shown for thin series.
Through July 2026. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 3827640000 | Mix Cont Gt=30% Hfc-134a But not Cont Hfos, NESOI | $254K | 13.11% | 95.72% | $33K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3827640000 | Mix Cont Gt=30% Hfc-134a But not Cont Hfos, NESOI | $100K |
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 · July 2026
origin
India and Mexico together supply 100% of it.
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destination
entry
rate provision · imports
4.3% enters free of duty; the effective duty rate is 13.11%.