Only Carrier® systems possess Greenspeed™ intelligence, providing homeowners with consistent comfort, precisely matching to the heating or cooling demands of the home. This translates into miserly energy use and the near-elimination of temperature swings throughout a home.
In fact, the Carrier Infinity® 20 heat pump with Greenspeed intelligence is so efficient it has 29-69% greater heating efficiency than other air source heat pumps available today (As of 8/1/11).