FRIEDRICH®'S CHILL® PREMIER INVERTER ROOM AIR CONDITIONERS ARE EQUIPPED WITH PRECISION INVERTER® COMPRESSORS WHICH PROVIDES VARIABLE COMFORT LIBRARY QUIET OPERATION AND ULTIMATE EFFICIENCY. FRIEDRICH®'S PRECISION INVERTER® VARIABLE SPEED COMPRESSOR ADJUSTS UP OR DOWN BASED ON NEED PROVIDING THE USER PRECISE TEMPERATURE CONTROL AS WELL AS A WIDER RANGE OF BTU CAPACITIES. THESE UNITS ALSO OPERATE UP TO 35% MORE EFFICIENTLY THAN TRADITIONAL WINDOW AC'S AND ARE ENERGY STAR® CERTIFIED. FRIEDRICH®'S CHILL® PREMIER INVERTER COMES WITH R32 REFRIGERANT WHICH IS A GREENER MORE SUSTAINABLE REFRIGERANT WITH A LOWER GLOBAL WARMING POTENTIAL. THE CHILL® PREMIER INVERTER LINE HAS CORROSION PROTECTION ON BOTH THE INTERNAL AND EXTERNAL COILS TO PROTECT AND EXTEND THE LIFE OF THE UNIT. THESE MODELS HAVE A SLIDE OUT CHASSIS FOR INSTALLATION IN A WINDOW OR THROUGH THE WALL. THIS LINE COMES WITH A 1-YEAR PARTS WARRANTY AND A 5-YEAR WARRANTY ON THE SEALED SYSTEM. SMART DESIGN TRADITIONAL WINDOW UNITS DON'T ALLOW THE HOMEOWNER TO OPEN THE WINDOWS ONCE INSTALLED LIMITING THE AMOUNT OF FRESH AIR BUT THE FRIEDRICH® CHILL® PREMIER INVERTER FEATURES A FLEXIBLE DESIGN THAT INCLUDES UL STYLE""MARGIN-TOP0PX; PADDING-TOP 5PX; PADDING-BOTTOM 5PX;"" SIMPLESILL TECHNOLOGY - ALLOWS THE WINDOW TO BE OPENED AND CLOSED AFTER INSTALLATION THREE-STEP INSTALLATION SIMPLIFIES THE PROCESS WITH A ONE-PIECE FRAME INCLUDED HARDWARE AND EXPANDABLE SIDE CURTAIN LIBRARY QUIET OPERATION SOFT-START TECHNOLOGY ELIMINATES HARD STOP-AND STARTS AND RUN AT LOWER SOUND LEVELS THAN OTHER COMPRESSOR TYPES. QUIETMASTER TECHNOLOGY COMBINES HEAVY DUTY INSULATION STIFFENED SHEET METAL OPTIMIZED AIR FLOW AND COUNTERWEIGHTS TO DAMPEN VIBRATION.UL STYLE""MARGIN-TOP0PX; PADDING-TOP 5PX; PADDING-BOTTOM 5PX;"" QUIET MODE OPERATES AT ULTRA-LOW FAN SPEED FOR THE QUIETEST COOLING AVAILABLE DOWN TO 32DB ON FAN ONLY AND 42 DB IN COOLING VARI