Description GREE DC Inverter Heat Pumps / Air Conditioners provide cooling and heating with considerable energy savings. Equipped with variable speed DC Inverter compressors GREE units offer a compact, quiet, stylish wall-mounted design which perfectly blends into any environment. These units have optimized air duct design for a range of noise reduction measures resulting in ultra-low noise performance. Airlux Inverter Air Conditioner 18000BTU Provides Cooling And Heating And Compact, Quiet, Stylish Wall-Mounted Design Which Perfectly Blends Into Any Environment. These Units Have Optimized Air Duct Design For A Range Of Noise Reduction Measures Resulting In Ultra-Low Noise Performance. Low Outside Operating Temperature -15C. GAS R22 Insulated Copper Pipes For Installation – 3 Meters Auto Restart Defrosting System & Multi-Fold Evaporator Washable Corrugated Filter To Trap Very Fine Particles In The Air Remote Control, ON/OFF Timer, Sleep Mode, And Memories Quick Cooling & Heating. High Energy Efficiency & Quiet Operation Outdoor ASZ18O Power supply Ph-V-Hz 208-230V~60Hz ,1Ph Cooling Capacity Btu/h 18000 EER Btu/w 13 SEER Btu/w 20.8 Heating Capacity Btu/h 18000 HSPF4 Btu/w 10 MAX.FUSE A 20 Indoor unit Dimension(W*D*H) mm 1080x226x335 Dimension(W*D*H) inch 42.52×8.90×13.19 Net/Gross weight lbs. 29.1/37.0 Outdoor noise level min/max dB(A) 30/61 Outdoor unit Dimension(W*D*H) mm 845x363x702 Dimension(W*D*H) inch 33.27×14.29×27.64 Net/Gross weight lbs. 101.0/108.2 Refrigerant type g R410A/1950g Refrigerant precharge ft 25 Additional charge for each ft oz 0.161 Operation temperature Indoor(cooling/ heating) ℃ 17~32/0~30 Indoor(cooling/ heating) ℉ 62~90/32~86 Outdoor(cooling/heating) ℃ -25~50/-25~30 Outdoor(cooling/heating) ℉ -13~122/-13~86