Worcester Bosch Greenstar 8000+ 36kW Gas Combi Boiler - 7736702579

Worcester Bosch Greenstar 8000+ 36kW Gas Combi Boiler - 7736702579 The Worcester Bosch Greenstar 8000+ 36kW Gas Combi Boiler - 7736702579 is a premium Natural Gas combination boiler designed for larger and busier homes requiring powerful central heating and strong instantaneous domestic hot water performance. Part of Worcester Bosch's flagship Greenstar 8000+ range, the GR8701iW 36 C NG combines high performance with a modern white casing, full-colour display, backlit touch controls and installer-friendly features designed to simplify fitting, servicing and everyday operation. With a maximum domestic hot water input of 36kW, central heating output of up to 33.7kW and a hot water flow rate of up to 15.2 litres per minute at a 35°C rise, this model is particularly well suited to medium to larger homes with higher hot water demands, subject to correct system sizing and adequate mains water pressure. Key Features Premium Worcester Bosch Greenstar 8000+ combination boiler Manufacturer part number: 7736702579 Model: GR8701iW 36 C NG Natural Gas condensing combi boiler 36kW maximum domestic hot water input Maximum central heating output: 33.7kW DHW flow rate: 15.2L/min at a 35°C rise DHW flow rate: 13.5L/min at a 40°C rise ErP A-rated space heating performance ErP A-rated water heating performance 94% seasonal space-heating efficiency 87% water-heating efficiency Full-colour display with backlit touch controls Pre-plumbing jig supplied for easier installation Rear piping capability Large condensate siphon Optional Worcester Intelligent Filling System compatibility Compatible with Bosch EasyControl and selected Worcester controls Solar compatible Compact 5mm side clearances Wall-mounted internal installation Low NOx emissions Up to 12-year guarantee available subject to Worcester Bosch terms and qualifying installation Boiler Specification Brand: Worcester Bosch Range: Greenstar 8000+ Model: GR8701iW 36 C NG Product Type: Gas Combination Boiler Manufacturer Part Number: 7736702579 EAN / GTIN: 4069143014240 Gas Council Number: 47-800-45 Fuel Type: Natural Gas Boiler Type: Condensing Combination Boiler Maximum DHW Input: 36kW Maximum CH Output: 33.7kW Central Heating Output Range: 5.1-33.7kW DHW Flow Rate at 35°C Rise: 15.2L/min DHW Flow Rate at 40°C Rise: 13.5L/min Minimum DHW Activation Flow: 1.9L/min DHW Temperature Range: 35°C-60°C Declared Load Profile: XL ErP Space Heating Class: A ErP Water Heating Class: A Seasonal Space Heating Efficiency: 94% Water Heating Efficiency: 87% Sound Power Level: 53dB NOx Emissions: 25mg/kWh Maximum Horizontal 60/100 Flue Length: 10m, subject to approved flue configuration Maximum Vertical 60/100 Flue Length: 14m, subject to approved flue configuration Expansion Vessel Capacity: 10 litres Expansion Vessel Pre-Charge: 0.75 bar Maximum Heating System Pressure: 2.5 bar Protection Rating: IPX4D Mounting: Wall Mounted Installation Location: Internal Colour: White Dimensions: 780mm H x 440mm W x 365mm D Height: 780mm Width: 440mm Depth: 365mm Appliance Weight: 47kg Lift Weight: 41kg with front and side panels removed Total Packaged Weight: 55kg Powerful Hot Water Performance The Greenstar 8000+ 36kW has been designed for homes with higher domestic hot water requirements. With a flow rate of up to 15.2 litres per minute at a 35°C temperature rise, it offers stronger hot water delivery than lower-output combi models when adequate mains water pressure and flow are available. Premium Controls & Connectivity A full-colour display with backlit touch controls provides intuitive access to boiler settings and diagnostics. The Greenstar 8000+ is also compatible with Bosch EasyControl and selected Worcester Bosch controls, helping installers create a more responsive and efficient heating system. Installer-Friendly Design Pre-plumbing jig supplied as standard Rear piping capability Accessible electrical connections Drop-down control fascia for servicing Front-access pressure relief valve Large condensate siphon designed to help reduce freezing risk Optional Intelligent Filling System compatibility Digital system pressure display Only 5mm side clearance required Ideal For Medium to larger homes Busy family properties Properties with higher instantaneous hot water requirements Homes with one main bathroom and demanding shower use Replacement combi boiler installations Modern central heating upgrades Properties requiring a premium Natural Gas combi boiler Guarantee Information The Greenstar 8000+ is supplied with a standard 8-year guarantee. Worcester Bosch offers extended guarantee options when the boiler is installed with qualifying Worcester Bosch accessories and registered in accordance with current terms. Up to 12 years may be available through qualifying Worcester Bosch installer or loyalty arrangements. Always check the latest Worcester Bosch guarantee terms at the time of installation. Important Product Note This listing is for the Worcester Bosch Greenstar 8000+ 36kW Natural Gas Combi Boiler - 7736702579. Flue kit, system filter, heating controls, chemicals, pipework, fittings and installation accessories are not included unless specifically stated elsewhere in the product listing. Always confirm the required flue arrangement, heating load, domestic hot water demand, mains water pressure and system design before ordering. Published maximum hot water flow rates require adequate dynamic mains water pressure and incoming flow. Professional Installation Required This gas boiler must be installed, commissioned and registered by a suitably qualified Gas Safe registered engineer. Installation must comply with current UK gas safety requirements, Building Regulations and Worcester Bosch installation instructions.