AHK Series designed for installation in a furred down area or dropped ceiling area. Cooling only, cooling and electric heating, or heat pump with electric back up. Optional factory installed electric heat of either 3, 5, 6, 8, or 10 kW. Cooling capacities of 1, 1.5, 2.0, 2.5, or 3.0 nominal tons. Capillary flowrater refrigerant metering is standard with thermal expansion valves optional. Standard internal filter rack.