Saving energy and money on your utility bills has never been so easy. The Whirlpool WRT571SMYM 21.1 cu. ft. Top Freezer Refrigerator is CEE Tier 3 rated (the most energy-efficient tier available) and even uses less energy each year than a 40-watt light bulb. This model also features pur 6-month ice filtration and a factory-installed icemaker so you don't have to worry about the hassle of ice trays. A fresh flow air filter also reduces common food odors and keeps your energy-saving refrigerator smelling fresh. Plus, fresh flow produce preserver extends the freshness of produce up to 4 days, based on commonly purchased produce.