The Greenstar Heatslave II is the UK's most popular external oil combi boiler with flow rates up to 22l/min.
Suitable for small, medium and large sized properties, this boiler features a robust weatherproof cabinet and a one piece stainless steel primary baffle and cross firing burner.
The next generation Heatronic 4i digital control unit provides accurate control and diagnostic information.
Worcester Greenstar Heatslave II External 18/25 Combi Oil ErP+ Boiler (boiler only).
