HCs Lead The Way
The Lead-Up to a CFC Replacement page 2

In general, HFC refrigerants were found to be a poor substitue for CFC refrigerants as it became apparent that extensive modifications to existing systems would be necessary. This costly exercise was called retro-fitting. Furthermore, HFC's were found to be poor performers under extreme conditions.

The importance of hydrocarbon refrigerants had been extolled by Greenpeace under the name "Greenfreeze technology" for at least ten years.

As a result, in 1991, Foron, a minor German manufacturer of refrigerators, announced that they would develop a refrigerator using hydrocarbon-based refrigerants and foam expansion.

This development was actively promoted by Greenpeace.