Air Source Heat Pumps     An air source heat pump system is normally designed to deliver 100% of the heating and hot water demand, with the heat pump itself typically sized to provide at least 95% of the heating requirement. To minimise investment costs, it is normal to provide the remaining energy demand from a supplementary heat source, most commonly an electricimmersion heater, however in retro-fit applications it is also possible to combine the heat pump with an existing boiler.           Integrated air source heat pumps   Heat pumps are the ideal solution for swimming pool heating, providing an economic and energy efficient means of delivering a constant pool water temperature throughout the year. Air source heat pumps are particularly suitable due to their low installation cost and high efficiencyat high ambient temperatures during the summer – the most frequent time of swimming pool use!     Indoor air source heat pumps can be installed in a utility room, garage or basement and are designed with low noise emissions in mind. Single phase models are available in outputs of 8-11kW, with outputs up to 28kW available for 3 phase connection, providing solutions for both domestic and light commercial applications alike.