HCFC (HCFC)

HCFC stands for hydrochlorofluorocarbon, the transitional refrigerant family introduced in the mid-1990s to replace ozone-destroying CFCs. The dominant Indian variant is R-22 (chlorodifluoromethane), used in virtually every split air-conditioner and window AC manufactured between 1995 and 2015, and in many small commercial chillers. R-22 has an ozone-depletion potential of 0.055 — about 5% of R-12 — but a global-warming potential of 1,810, still a significant climate forcer.

India's phase-out schedule: Under the Montreal Protocol's accelerated HCFC phase-out, India banned new R-22 imports for fresh installations in 2020 and is committed to a complete production phase-out by 2030. Service and maintenance imports continue, but supply tightens every year. This means R-22-charged ACs at end-of-life can no longer be simply re-gassed; the refrigerant has economic value when reclaimed, typically Rs 800-1,500 per kg at the recycler gate.

Why recovery is mandatory: A 1.5-ton split AC contains approximately 1.0-1.2 kg of R-22 in the sealed circuit. Venting this charge releases the climate equivalent of about 2.0 tonnes of CO2 — roughly the annual emissions of a small Indian car. The E-Waste (Management) Rules, 2022, classify refrigerant gases as hazardous components requiring recovery before any dismantling, shredding, or copper recovery from coils.

Recovery and downstream handling: Trained technicians use refrigerant-specific recovery machines with vacuum capability below 25 inches of mercury. Recovered R-22 is filtered, dried, and either resold for legacy service or sent to authorised destruction. The chlorine atom in R-22 makes any uncontrolled thermal disposal a dioxin risk, so destruction must occur in approved high-temperature incinerators with hydrogen chloride scrubbing. Common failure modes at small Indian dismantlers include puncturing condenser coils with a hammer to access copper, releasing the full charge in seconds — a violation traceable through the producer's EPR chain.