The Keston Qudos 28 offers todays domestic market the ultimate in tomorrows technology. A range of fully modulating gas condensing boilers with advanced yet simple integral controls that provide a suite of options for the user/installer to select to ensure optimum performance is delivered at all times. For ultimate performance optimising, the Qudos 28s also features an integral speed-controlled pump to ensure water flow rate and burner rate are perfectly matched.