45kW Boilers

The Worcester Bosch Greenstar 8000 Style 45kW Combi Gas Boiler is a condensing combi boiler for very large homes with up to 20 radiators and multiple bathrooms. It delivers a hot water flow rate of 18.4 l/min at 35°C and a 94% efficiency rating (ErP A-rated). Measuring 780x440x365mm and weighing 47kg, it’s wall-mounted with a high-end finish. It features a 1:10 modulation ratio, a stainless steel heat exchanger, EasyControl, and a full-colour display. It supports natural gas and offers an 8-year warranty, extendable to 12 years with a filter and Excelerate installer. Perfect for expansive homes.

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