Puron? refrigerant is environmentally sound
  and wont deplete the ozone layer. Carrier
  introduced Puron? refrigerant a full six
  years ahead of the competition,
  paving the way for the future.
  The Clean Air Act of 1990
  prohibits the production of
  HCFC-based air conditioners
  and heat pumps by 2010, and bans
  Freon?22* production by 2020. As Freon?
  production reduces, its cost is predicted to
  increase. Freon?12 in the automotive
  industry increased by a whopping 800% in
  a short seven years! Ensure your cooling
  costs by investing in systems with
  Puron? refrigerant the environmentally
  sound, efficient and
  dependable refrigerant
  designed for the future. Carrier's
  Infinity 21 air conditioner with
  Puron? refrigerant and two-stage
  technology delivers excellent efficiency,
  reliability and proven performance.
  Puron? Refrigerant
  Carrier specializes in creating a customized home comfort system tailored to your needs
  with our broad selection of residential heating and cooling products. Your Carrier dealer
  can help you choose the best system for your home, including the Infinity 21 air conditioner
  with Puron? refrigerant and Carrier-exclusive features that further enhance your