Fast Cool - Quickly cool down your home, office, or apartment for maximum comfort during hot days and nights. Energy Saver Mode:This function cycles the fan on for two minutes at 10 minute intervals and will turn the compressor back on if the the room temperature exceeds the set temperatureThe unit can be made more environmentally friendly and cost effective with the energy saver function, which causes the compressor to only run long enough for the unit to reach the set temperature 3-In-1 Functionality - 3-in-1 technology combines air conditioning, dehumidification, and fan-only modes that work together to increase the comfort of your home Innovative Features – A clear LED display on the front panel (as well as the included remote control) provides access to the following modes: timer mode, energy saver mode, and sleep mode Easy Installation - This window unit installs easily without significant modification to the existing window frame. All mounting accessories are included. A screwdriver is required for installation.