| The Worcester Greenstar Si Combi range includes the 25Si and 30Si models with features including; compact dimensions - siting flexibility WB3 series heatcell - robust cast aluminium/silicon construction Heatronic III control system - sophisticated boiler management compact hydraulic - efficient and reliable wall mounting frame with pipes behind - no exposed pipework low NOx and CO2 emissions - environmentally friendly keep hot facility - instantly available hot water DHW and CH temperature control - consumer comfort flexibility
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