Saving money on your energy bill is easier than you might think. You'll see that conserving energy is not only good for your wallet. It's also good for the environment.

The year 2010 marks an important U.S. milestone for ozone protection with the phase out of R-22, an ozone depleting refrigerant used in some new air-conditioning systems for more than four decades. To meet this environmental challenge, Carrier Corp., a unit of United Technologies Corp. (NYSE:UTX), introduced non-ozone depleting alternative cooling solutions with Puron refrigerant, approved in 1997 by the U.S. Environmental Protection Agency.