It's not a case of opinion. One is better or worse for each relevant attribute, like thermal efficiency, cost, dangers, enviornmental concern, lifespan, etc I

It's not a case of opinion. One is better or worse for each relevant attribute, like thermal efficiency, cost, dangers, enviornmental concern, lifespan, etc I often hear that r12 cools better but that's not true at all according to thus Perdue study. There may be other factors though. https://docs.lib.purdue.edu/cgi/viewcontent.cgi%3Farticle%3D1154%26context%3Diracc&ved=2ahUKEwi98ZiRjdj4AhUmkYkEHWMuD0YQFnoECAcQAQ&usg=AOvVaw1dlBEaAodwCnMzUOhVI6Hx https://docs.lib.purdue.edu/cgi/viewcontent.cgi%3Farticle%3D...