| It’s evident the average commenter on this subject hasn’t run the numbers on a full cost benefit of the various options. Strong words. | heat pumps sometime

| It’s evident the average commenter on this subject hasn’t run the numbers on a full cost benefit of the various options. Strong words. | heat pumps sometimes fail in ways that the ozone depleting refrigerant to escape. R-290(propane) and R-744 (carbon dioxide) both have a Ozone depletion potential(ODP) of 0. What are you talking about?