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HSChapter 29
U.S. imports of chlorodifluoromethane (hcfc-22) (HS 290371) totaled $122K in April 2026, traded with 1 country.
Chlorodifluoromethane (HCFC-22) imports of $122K in April 2026 ran 60% above the year-to-date monthly average of $76K.
Last updated: April 2026 dataHCFC-22 remains one of the most widely used refrigerants in residential and light-commercial air conditioning equipment, but its import is subject to EPA consumption allowances under the Montreal Protocol phaseout schedule for hydrochlorofluorocarbons. Tariff line 2903710100 covers this compound exclusively. Mexico and South Korea are the leading US import sources — a supply pattern shaped partly by the USMCA relationship with Mexico and by South Korean chemical producers' established position in the global refrigerant market. Importers must hold valid EPA HCFC allowances and are prohibited from importing HCFC-22 for use in new equipment manufactured after January 1, 2010.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Under the Clean Air Act's ozone-protection provisions, importers must hold EPA-issued HCFC consumption allowances equal to the quantity being imported. Allowances are allocated annually and are declining under the phaseout schedule. Imports without valid allowances are prohibited, and EPA enforces this through Customs entry documentation requirements.
Yes — HCFC-22 may still be imported and used to service existing equipment that was manufactured before the January 1, 2010 prohibition on new equipment. It cannot be used as a refrigerant in newly manufactured equipment. This servicing exemption sustains ongoing import demand, though volumes are expected to decline as older equipment is retired or retrofitted.
Monthly import values over time
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HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % |
|---|---|---|---|
| 2903710100 | CHLORODIFLUOROMETHANE (HCFC-22) | $122K | -- |
CHLORODIFLUOROMETHANE (HCFC-22)
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2903710100 | CHLORODIFLUOROMETHANE (HCFC-22) | $0 |
CHLORODIFLUOROMETHANE (HCFC-22)
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 |
|---|---|---|---|
| Puerto Rico | $64K | -- | -$64K |
| Georgia | $58K | -- | -$58K |
| Kentucky | -- | -- | -- |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| SAN JUAN, PR | $64K | -- | -$64K |
| LAREDO, TX | $58K | -- | -$58K |
| DETROIT, MI | -- | -- | -- |