The US Senate just approved an HFC ban. So which refrigerant should be used in the heat pumps? Can we get HFC-free heat pumps today? See https://www.danby.com

The US Senate just approved an HFC ban. So which refrigerant should be used in the heat pumps? Can we get HFC-free heat pumps today? See https://www.danby.com/blog/danbys-commitment-to-remain-100-hfc-free/ https://www.danby.com/blog/danbys-commitment-to-remain-100-h... http://hvacrfundamentals.blogspot.com/2019/06/appliances-with-flammable-refrigerant.html?m=1 http://hvacrfundamentals.blogspot.com/2019/06/appliances-wit... Looks like r600a, iso-butane is already in use.