Tomorrow’s Tech Treepowered by Astra

Heating, Cooling & Refrigeration · Recorded milestone

Montreal Protocol

Recorded year1987

Nations agree to phase out CFC refrigerants and other ozone-destroying gases, the most successful environmental treaty so far.

Explore this milestone on the interactive map

Built on

CFC refrigerantsRecorded · 1928enables
Ozone hole detectedRecorded · 1985enables

Led to

Ozone-safe HFC refrigerantsRecorded · 1992enables
Hydrocarbon fridgesRecorded · 1993enables
Kigali HFC phase-downRecorded · 2016enables
Ozone layer fully healedForecast · ~2066enables

Sources & evidence

Additional source

Dataset updated 2026-10-18. This individual record has not been separately re-reviewed.