HRM achieves SEDBUK A for oil-fired boilers
HRM Boilers has increased the efficiency of its Wallstar through-the-wall oil-fired boilers and X-ternal boiler range . Wallstar condensing 12/12, 15/19 20/24 and X-ternal 12/14 and 15/19 models are now all rated SEDBUK Band A. Independent tests show a net efficiency of 96% across both ranges.
The improvements have been achieved without any change to external dimensions, enabling the new models to be used as direct replacements for models dating back to 1990.