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HSChapter 29
U.S. imports of pentafluoroethane (hfc-125), hfc-143a, and hfc-143 (HS 290344) totaled $8.0M in April 2026, traded with 3 countries.
Importers of Pentafluoroethane (HFC-125), HFC-143a, and HFC-143 paid $1.1M in duties in April 2026 — an effective duty rate of 14% on $8.0M in dutiable value, based on actual customs collections rather than the published tariff schedule. Pentafluoroethane (HFC-125), HFC-143a, and HFC-143 imports of $8.0M in April 2026 ran 215% above the year-to-date monthly average of $2.6M.
Last updated: April 2026 dataHFC-125 (pentafluoroethane) and HFC-143a (1,1,1-trifluoroethane) are key components of widely used refrigerant blends such as R-410A and R-404A, making this heading central to the commercial HVAC and refrigeration supply chain. The US HTS schedule provides individual 10-digit lines for HFC-125 (2903441010), HFC-143a (2903441020), and HFC-143 (2903441030), in addition to a combined line (2903441000). The United Arab Emirates and India lead US imports, with China as a third source — a supplier concentration that creates exposure to AIM Act allowance constraints and Section 301 tariff considerations for Chinese-origin material.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
The individual 10-digit lines (2903441010, 2903441020, 2903441030) allow CBP and EPA to track each substance separately for AIM Act allowance accounting and statistical purposes. The combined line (2903441000) may apply in transitional or legacy contexts. Importers should classify at the most specific applicable line to ensure accurate regulatory reporting.
EPA's AIM Act phasedown reduces the total allowable HFC consumption in the US on a scheduled basis. Importers must hold sufficient EPA allowances to cover each shipment, and allowance availability tightens as the phasedown progresses. Procurement teams should factor allowance lead times and potential secondary-market allowance costs into supply planning.
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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| UNITED ARAB EMIRATES | $4.5M | -- | -$4.5M |
| INDIA | $2.7M | -- | -$2.7M |
| CHINA | $894K | -- | -$894K |
| NETHERLANDS | -- | $455K | +$455K |
| MEXICO | -- | $103K | +$103K |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 2903441010 | 1,1,1,2,2-PENTAFLUORETHANE (HFC-125) | $7.1M | 13.70% | $978K |
| 2903441020 | 1,1,1-TRIFLUOROETHANE (HFC-143A) | $776K | 13.70% | $106K |
| 2903441030 | 1,1,2-TRIFLUOROETHANE (HFC-143) | $118K | 13.70% | $16K |
1,1,1,2,2-PENTAFLUORETHANE (HFC-125)
1,1,1-TRIFLUOROETHANE (HFC-143A)
1,1,2-TRIFLUOROETHANE (HFC-143)
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2903441000 | PENTAFLUOROETHANE (HFC-125), HFC-143A AND HFC-143 | $576K |
PENTAFLUOROETHANE (HFC-125), HFC-143A AND HFC-143
60.2K 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
| State | Imports | Exports | Balance |
|---|---|---|---|
| Illinois | $3.1M | -- | -$3.1M |
| New Jersey | $2.9M | -- | -$2.9M |
| Florida | $1.5M | -- | -$1.5M |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| SAVANNAH, GA | $4.5M | -- | -$4.5M |
| NEWARK, NJ | $2.7M | -- | -$2.7M |
| NORFOLK-NEWPORT NEWS, VA | $518K | -- | -$518K |