Worcester Greenstar Heatslave II External 18/25 2022+ Combi Boiler

Worcester Greenstar Heatslave II External 18/25 2022+ Combi Boiler The Worcester Bosch Greenstar Heatslave II External 18/25 is a high-performance oil combi boiler designed for outdoor installation. Providing central heating and instant hot water from a single appliance, it is an excellent choice for small to medium-sized properties located off the mains gas network. With a maximum central heating output of 25kW and a domestic hot-water flow rate of up to 18 litres per minute, this boiler delivers dependable heating and strong hot-water performance without requiring a separate cylinder. Its durable, weather-resistant external cabinet frees up valuable space inside the property. Integrated frost protection supports reliable operation during cold weather, while the cross-firing burner and one-piece primary baffle provide convenient access for servicing and maintenance. Key Features Maximum 25kW central heating output Hot-water flow rate of up to 18 L/min Provides heating and instant domestic hot water External installation saves valuable indoor space Durable, weather-resistant green cabinet Integrated frost protection Quiet operation Digital control interface for accurate operation Cross-firing burner design One-piece primary baffle for easier servicing Convenient front access to internal components Easy-access oil and hydraulic connections Compatible with selected Worcester Bosch controls Solar-compatible ErP A-rated for central heating ErP B-rated for water heating Up to 7-year Worcester Bosch guarantee, subject to eligibility and manufacturer terms Technical Specification Specification Details Brand Worcester Bosch Range Greenstar Heatslave II External Model 18/25 2022+ Manufacturer Part Number 7731600264 EAN 4062321624545 Boiler Type Combi boiler Fuel Type Oil Installation Type External Mounting Floor standing Maximum Central Heating Output 25kW Domestic Hot-Water Flow Rate 18 L/min Heating ErP Rating A Hot-Water ErP Rating B Height 950mm Width 640mm Depth 770mm Cabinet Colour Green Magnetic Filter Included No Guarantee Up to 7 years, subject to terms Why Choose the Heatslave II External 18/25? The external design makes this boiler particularly suitable for properties where indoor installation space is limited. Its 25kW output provides a balanced combination of heating capacity and hot-water performance, while Worcester Bosch’s service-friendly design helps simplify routine maintenance. Important Information Installation must be completed by a suitably qualified OFTEC-registered heating engineer. A magnetic system filter is not included. The appropriate flue, controls and installation accessories should be purchased separately unless expressly stated otherwise. Worcester Bosch’s extended guarantee is subject to installation, registration and eligibility requirements. Boiler suitability should be confirmed by a qualified heating professional before purchase. Delivery is 6-11 Days