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U.S. exports of chlorodifluoromethane (hcfc-22) (HS 290371) totaled $396K in July 2026.
Chlorodifluoromethane (HCFC-22) imports of $173K in July 2026 ran 61% above the year-to-date monthly average of $107K.
Last updated: July 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.
3 shipments/mo
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.
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Subheading 24 of 41 in heading 2903
Subheading 290371 · $173K of $60.3M
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 |
|---|---|---|---|---|
| 2903710100 | Chlorodifluoromethane (Hcfc-22) | $173K | 0.00% | 0.00% |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2903710100 | Chlorodifluoromethane (Hcfc-22) | $396K |
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.
ImportsExports
Imports
$173KYoY · Pro
Exports
$396KYoY · 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.
Exports · July 2026
destination
Saudi Arabia and Canada together take 100% of it.
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origin
entry
rate provision · imports
100.0% enters free of duty; the effective duty rate is 0.00%.