1) ultra-remote air supply \n\n2) major-diameter large-vane centrifugal impeller with stronger and farther blow \n\n3) brand-new optimized air conduit to enable smooth air intake and outtake \n\n4) super heating and express thermoregulation \n\n5) compressor of world-famous brand with powerful running \n\n6) electric heating, winter high-performance heating \n\n7) trapezium internal-thread copper tube to enhance heating \n\n8) hydrophilic aluminum foil to enable faster defrosting and more adequate heat fully optimized system with super power to enable express thermoregulation 30db ultra mute \n\n9) low-noise motor, which enables calm running \n\n10) non-equidistance inclined-vane crosses impeller, which can decrease the interior machine running noise \n\n11) humanized sleep mode, which facilitates your sound sleep, performance: cooling only, cooling & heating optional, capacity: 8000btu, 9000btu, 10000btu, 12000btu, 18000btu, 22000btu, 24000btu optional. power supply: 1ph, 220 /240v, 50hz /60hz optional, gas: r22, r407c, r410a optional.