The FS4BI iQ Drive air conditioner is the most efficient air
conditioner homeowners can buy. Currently, it leads the heating and cooling
market in terms of SEER ratings – it reaches an unprecedented 25.5 SEER! In
fact, this model has been rated a Best Buy by Consumers Digest magazine and has been awarded the ENERGY STAR Most
Efficient designation two years running – once in 2012 and then again in 2013.