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HSChapter 29
U.S. imports of 1,1,1,2-tetrafluoroethane (hfc-134a) and hfc-134 (HS 290345) totaled $8.4M in April 2026, traded with 7 countries.
Importers of 1,1,1,2-Tetrafluoroethane (HFC-134a) and HFC-134 paid $574K in duties in April 2026 — an effective duty rate of 7.4% on $7.8M in dutiable value, based on actual customs collections rather than the published tariff schedule. 1,1,1,2-Tetrafluoroethane (HFC-134a) and HFC-134 imports of $8.4M in April 2026 ran 27% above the year-to-date monthly average of $6.6M.
Last updated: April 2026 dataHFC-134a is the dominant automotive and stationary air conditioning refrigerant of the past three decades, though it faces phasedown pressure under the EPA AIM Act due to its global warming potential. The US HTS schedule covers this heading under two 10-digit lines: 2903451000 for HFC-134a alone and 2903451100 for the combined HFC-134a and HFC-134 grouping. India leads US imports, with the United Kingdom and Mexico also among the top suppliers — a geographically diverse source base that reflects the global scale of HFC-134a production. Chinese-origin HFC-134a is subject to Section 301 tariffs, which has influenced sourcing patterns toward non-Chinese suppliers.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Section 301 tariffs on Chinese-origin HFC-134a have made Chinese supply less cost-competitive, accelerating a shift toward Indian, European, and Mexican producers. This has contributed to India's emergence as the leading US supplier and has increased the importance of supply-chain diversification for importers managing cost and availability risk.
Line 2903451000 covers pure 1,1,1,2-tetrafluoroethane (HFC-134a), while line 2903451100 covers the combined HFC-134a and HFC-134 grouping. HFC-134 (1,1,2,2-tetrafluoroethane) is a structural isomer with different properties and limited commercial use. Importers should confirm the exact compound or mixture composition to select the correct line and avoid classification disputes.
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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| INDIA | $7.0M | -- | -$7.0M |
| UNITED KINGDOM | $784K | $4.5M | +$3.7M |
| MEXICO | $637K | $2.6M | +$2.0M |
| BRAZIL | -- | $2.2M | +$2.2M |
| CANADA | $12K | $963K | +$951K |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 2903451000 | 1,1,1,2-TETRAFLUOROETHANE (HFC-134A) | $8.4M | 7.40% | $574K |
1,1,1,2-TETRAFLUOROETHANE (HFC-134A)
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2903451100 | 1,1,1,2-TETRAFLUOROETHANE (HFC-134A) AND HFC-134 | $11.5M |
1,1,1,2-TETRAFLUOROETHANE (HFC-134A) AND HFC-134
1.6M kg
NUCLEIC ACIDS & SALTS; OTHER HETEROCYCLIC CMP, NES
HS 293499
HETEROCYCLIC COMP W NITROGEN HETERO-ATM ONLY NESOI
HS 293399
POLYPEPTIDE PROTEIN& GLYCOPROTEIN HORMONES &DERIV
HS 293719
CMPDS CONT AN UNFUSED PYRIDINE RING ETC NESOI
HS 293339
COMP WITH PYRIMIDINE OR PIPERAZINE RING, NESOI
HS 293359
ANTIBIOTICS, NESOI
HS 294190
| Port | Imports | Exports | Balance |
|---|---|---|---|
| NEW ORLEANS, LA | $12K | $5.7M | +$5.7M |
| HOUSTON, TX | $3.0M | $2.1M | -$942K |
| LAREDO, TX | $637K | $2.6M | +$2.0M |