The Q-TON Commercial Heat Pump uses a coil of cold refrigerant that absorbs ‘free’ heat from the outside air and a 2-stage compressor that puts the refrigerant under high pressure in order to raise its temperature swiftly and efficiently. An on-board heat exchanger uses heat from the refrigerant to generate hot water up to 90°C, without the requirement for an additional electric immersion heater.

Hot water can be produced during off peak tariff electricity, which is then stored in a tank for daytime use. Q-TON efficiently produces high volume hot water using just ambient air heat and a small amount of electricity. It is usually used for direct boiler replacement, as it controls the water supply and storage temperature, as well as the output capacity.

The Q-TON Commercial Heat Pump is designed to provide energy, cost and carbon savings. It is most efficient when cold water is used to supply the heat pump. For that reason, the cold feed water is provided to the heat pump via the base of the storage stratified vessel. Each storage vessel has 5 pockets into which temperature sensors can be fitted to detect the volume (in % terms) of hot water held in the vessel at any particular time. The programming of the control system to hold specific volumes of hot water at different times of day is based on a balance of hot water demand and electricity tariffs, to ensure security of supply at minimum cost.