{"product_id":"worcester-greenstar-4000-18kw-system","title":"Worcester Greenstar 4000 18kW System","description":"\u003ch3\u003eWorcester Greenstar 4000 18kW System Boiler\u003c\/h3\u003e\n\nThe Worcester Greenstar 4000 18kW System Boiler is the direct upgrade of the Greenstar 18Ri, designed for small to medium-sized homes with one bathroom. Compact, wall-mounted, and modern in design, this system boiler is highly efficient, quiet, and packed with user-friendly features to make heating and hot water management simple and effective.\n\n\u003ch3\u003eEfficient Heating and Hot Water\u003c\/h3\u003e\n\nWith a wide power range and ErP A-rating, the Greenstar 4000 18kW ensures efficient heating while helping to reduce gas consumption and lower energy bills. The boiler is suitable for homes with a hot water storage cylinder, making it ideal for properties with one bathroom where instant hot water from a combi boiler may not be sufficient.\n\n\u003ch3\u003eModern Features for Easy Operation\u003c\/h3\u003e\n\nThis boiler features a full-colour text display for straightforward operation, while its quiet design ensures minimal disruption. For modern smart home integration, the Greenstar 4000 18kW supports wireless connectivity with the Bosch EasyControl, giving you full control of your heating system from anywhere. Additionally, it is compatible with Greenskies solar panels, helping to further reduce energy costs and environmental impact.\n\n\u003ch3\u003eKey Features \u0026amp; Benefits\u003c\/h3\u003e\n\nHeat output: 18kW – ideal for small to medium-sized homes\n\nErP A-rated efficiency – reduces fuel costs and carbon footprint\n\nQuiet operation – one of Worcester’s quietest system boilers\n\nWireless connectivity – compatible with Bosch EasyControl\n\nEasy-to-use full-colour display – intuitive interface for all settings\n\nCompatible with hot water storage cylinders – ideal for homes with one bathroom\n\nGreenskies solar panel compatible – supports sustainable energy use\n\nCompact wall-mounted design – dimensions: 724 x 400 x 310mm (HxWxD)\n\n7-year manufacturer guarantee – for peace of mind\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\nBrand: Worcester Bosch\n\nModel: Greenstar 4000 18kW System (7733600381)\n\nBoiler Type: System Boiler\n\nFuel Type: Natural Gas\n\nHeat Output: 18kW\n\nMounting: Wall\n\nDimensions (HxWxD): 724 x 400 x 310mm\n\nColour: White\n\nWeight: 30.6kg\n\nErP Rating: A\n\nEAN: 4057749856708\n\nProduct Code: PN183938\n\n\u003ch3\u003eFAQs\u003c\/h3\u003e \u003ch4\u003eIs this boiler suitable for small homes?\u003c\/h4\u003e Yes – with an 18kW output, it is ideal for **small to medium-sized homes** with a single bathroom. \u003ch4\u003eCan it be used with solar panels?\u003c\/h4\u003e Yes – the Greenstar 4000 18kW is compatible with **Greenskies solar panels** to help reduce energy costs. \u003ch4\u003eHow long is the warranty?\u003c\/h4\u003e The boiler comes with a **7-year manufacturer’s guarantee** for complete peace of mind.\u003cbr\u003e\u003cp\u003eCheck out our full range of \u003ca href=\"https:\/\/jjbuildingmaterials.co.uk\/collections\/plumbing-supplies\"\u003eplumbing supplies\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eBrowse more \u003ca href=\"https:\/\/jjbuildingmaterials.co.uk\/collections\/boilers\"\u003eboilers\u003c\/a\u003e available online.\u003c\/p\u003e","brand":"Worcester","offers":[{"title":"Default Title","offer_id":51771450229078,"sku":"146798","price":1290.6,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0905\/4509\/4998\/files\/worcester-greenstar-4000-18kw-system-5548868.jpg?v=1772639414","url":"https:\/\/jjbuildingmaterials.co.uk\/products\/worcester-greenstar-4000-18kw-system","provider":"JJ Building Materials","version":"1.0","type":"link"}