So freon is heavier than air how could it get to the atmosphere. Trees absorb carbon dioxide. I think global warning is a conspiracy and it is costing people money they don't have. I wondered why the manufacturers of refrigerant didn't say didn't say anything about global worming well HELLO they are going to make a lot of money the patents ran out. EPA should not be getting into this unless they are part of the conspiracy. Now I under stand that furnace manufactures have to increase efficiency on the furnaces which is OK but it puts a burden on an already stressed economy. Global worming is also why the coal burning electrical plants are having to clean up there emissions but it also raises cost of electricity.