If your unit is old enough to use dichlorodifluoromethane as opposed to Chlorodifluoromethane (or a blend of difluoromethane + pentafluoroethane) then it should have been scrapped 20+ years ago.
Originally Posted by Senior Tech
General public's attitude towards our energy predicament: "I reject the reality of finite resource depletion and substitute it with my own; energy is infinite, we just need an alternative storage medium to run the cars on. The economy can grow indefinitely - we just need to "green" everything! Technology is energy! Peak what?"