Profile: DPAC UK Ltd. is a water chiller, heat pump, and air conditioning sales agency. Our products include air cooled water chillers, water cooled water chiller, fan coil units, and air handling units. Air source heat pumps are an extremely energy efficient way of heating a building or domestic dwelling. The units extract heat from the outside air and concentrate it into a usable form to heat the hot water that circulates in the heating system. Our ground source heat pumps circulate a mixture of water and anti-freeze around a loop of pipe. The liquid travels around the loop. It absorbs heat from the ground, which is used to heat radiators, under floor heating systems, fan coils, and hot water.