DESC: Carrier ZQA123RB 9.9 EER, 230 Volt Heat And Cool 12,900 Cool BTU Air Conditioner With 9,800 BTU Heat Pump And Electric Heat Backup Is One Of Carriers Finest Heat Pumps. This quiet, reliable unit features three-speed control with a remote for easier use. This unit can either be installed thru-the-wall or in a window with expandable wing panels. It's "Weather Armor"(tm) cabinet offers triple protection against ordinary salt corrosion. The ZQ Heat Pumps use 1/2 to 1/3 less electricity than an electric heater. This model will make a fine addition to your home, office or facility.