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HSChapter 29
U.S. imports of difluoromethane (hfc-32) (HS 290342) totaled $2.2M in April 2026, traded with 2 countries.
Importers of Difluoromethane (HFC-32) paid $305K in duties in April 2026 — an effective duty rate of 14% on $2.2M in dutiable value, based on actual customs collections rather than the published tariff schedule. Difluoromethane (HFC-32) imports of $2.2M in April 2026 ran 110% above the year-to-date monthly average of $1.1M.
Last updated: April 2026 dataHFC-32 is a low-global-warming-potential refrigerant increasingly adopted as a replacement for higher-GWP blends in residential and commercial air conditioning systems, classified under 10-digit line 2903421000. India leads US imports under this heading, followed by the United Arab Emirates and Thailand, reflecting the shift of HFC production capacity toward South and Southeast Asia. Like other HFCs, HFC-32 is subject to EPA AIM Act consumption allowance requirements, and importers must ensure their allocations are in order before shipment.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Indian chemical manufacturers have invested significantly in HFC production capacity as global demand for lower-GWP refrigerants has grown. Competitive production costs and proximity to raw material supply chains have positioned Indian producers as major exporters, particularly as the HVAC industry transitions away from higher-GWP blends.
Pure HFC-32 (difluoromethane) classifies under HTS heading 290342. When HFC-32 is blended with other refrigerants to form a mixture (such as R-410A), the blend classifies under a different HTS chapter covering refrigerant mixtures. Importers must confirm whether the shipment is a pure substance or a pre-mixed blend to ensure correct classification.
| Country | Imports | Exports | Balance |
|---|---|---|---|
| INDIA | $2.2M | -- | -$2.2M |
| TAIWAN | -- | $301K | +$301K |
| KOREA, SOUTH | -- | $211K | +$211K |
| CHINA | -- | $105K | +$105K |
| CANADA | -- | $97K | +$97K |
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 2903421000 | DIFLUOROMETHANE (HFC-32) | $2.2M | 13.70% | $305K |
DIFLUOROMETHANE (HFC-32)
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2903421000 | DIFLUOROMETHANE (HFC-32) | $780K |
DIFLUOROMETHANE (HFC-32)
18.6K 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 |
|---|---|---|---|
| Kentucky | $2.2M | -- | -$2.2M |
| California | -- | $510K | +$510K |
| Texas | -- | $200K | +$200K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| CHARLESTON, SC | $2.2M | -- | -$2.2M |
| OAKLAND, CA | -- | $586K | +$586K |
| PORT HURON, MI | -- | $75K | +$75K |