The latest condensing boilers achieve efficiencies greater than 90%, whereas older boilers may only reach up to 55% and become unreliable as well as inefficient and costly to maintain. Cosaf provide the design, selection and installation of the latest high efficiency boilers. Applications are designed using the latest highly efficient condensing boilers and energy saving controls and, where possible, equipment is included within the government ECA scheme. Following installation, Cosaf provide a ...