TG, where have you been? A/C's no longer omit CFCs into the atmosphere. We learned that in 4th or 5th grade on Earth Day. There's a law that says A/C systems can no longer omit those, and while there may be old systems that do, a new system (which you're receiving) will not. I believe it was actaully a group of kids that got the law passed. So your West Hanovarian atmosphere is safe. ( :