These heat pumps will be promoted alongside solar thermal systems – including collectors and storage cylinders – whole house ventilation systems and heat recovery systems. The LWD 70A/SX is an air source heat pump offering an independently verified COP of 4.35, and which will attract an RHI payment of 7.3p per kW hour. Significantly, it will produce hot water at temperatures of up to 70° centigrade, making it suitable as a direct replacement for conventional gas boilers. Qualifying for the higher 18.8p per kW hour rate of payment, the SWC 120S and SWC 140S ground source heat pumps incorporate components such as the brine expansion tank, circulator and safety devices, while manifolds and ground arrays are also available.
