Half the article wasn't about a/c efficiency it was that HFC is more of a greenhouse gas than CO2, and was agreed to be phased out.
Is there really an HFC replacement - what is it? I wasnt aware.
Is there really an HFC replacement - what is it? I wasnt aware.
https://en.wikipedia.org/wiki/Montreal_Protocol
> It was agreed on 16 September 1987, and entered into force on 1 January 1989... As a result of the international agreement, the ozone hole in Antarctica is slowly recovering.[3] Climate projections indicate that the ozone layer will return to 1980 levels between 2050 and 2070.[4][5] Due to its widespread adoption and implementation it has been hailed as an example of exceptional international co-operation, with Kofi Annan quoted as saying that "perhaps the single most successful international agreement to date has been the Montreal Protocol".
There are new refrigerants called HFOs that are chemically-similar to HFCs, but do not exhibit the greenhouse effect. Ammonia and propane also work, and are commonly used in commercial refrigeration today.
This is not the same as actually replacing the refrigerant with propane (or a propane/isobutane blend). Still seems less risky then a gas dryer.