DESC: Ultra Quiet Operation and Energy Star Qualified. Friedrich air conditioners are crafted from superior components like high efficiency compressors, totally enclosed fan motors, sound-isolating extra thick rubber grommets, pure copper coils, heavy duty side curtains and durable galvanized steel. Our units also receive an automobile quality paint job. And, air filters receive a special antimicrobial treatment for greater air purity. All of these extra considerations help ensure that you are purchasing an air conditioner that will deliver years of quiet, dependable, energy efficient operation.