This high efficiency range of free standing indoor condensing oil boilers, designed for utility and kitchen installation is one of the most efficient oil boilers on the market today. With SEAI HARP ‘A’ rating, the range features the award winning unique Grant Vortex stainless steel condensing heat exchanger and turbulator baffle system. The 50-70 utility model has been designed to fit within a kitchen unit and, due to its reduced width, can be used as a direct replacement for most older oil fired boilers.