{"product_id":"worcester-greenstar-4000-12kw-lpg-system-boiler","title":"Worcester Greenstar 4000 12KW LPG System Boiler","description":"\u003ch3\u003eWorcester Greenstar 4000 12kW LPG System Boiler\u003c\/h3\u003e\n\nThe Worcester Greenstar 4000 12kW LPG System Boiler is a reliable, efficient heating solution designed for homes that use a stored hot water cylinder. It’s ideal for medium-sized properties and for households that need consistent hot water performance throughout the day.\n\nCompact, lightweight, and thoughtfully engineered, this boiler is easy to install in a wide range of locations. Its built-in pump and expansion vessel help streamline installation, while optional plug-in controls allow homeowners to customise how their heating system operates for added comfort and reduced energy use.\n\nAs an LPG model, it's a great choice for properties not connected to mains gas, including rural homes or holiday lodges. Optional diverter valves and smart controls make it flexible enough to match different heating setups and user preferences.\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\nLPG model ideal for off-grid properties\n\nCompact, space-saving design for easy installation\n\nBuilt-in pump and expansion vessel\n\nOptional diverter valve for flexible system layouts\n\nWide choice of heating controls for improved comfort and efficiency\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\nManufacturer: Worcester Bosch\nModel: 4000\nMPN: 7733600378\nSKU: 79141\nGTIN: 4057749856678\n\nPerformance:\n\nCH Output: 12kW\n\nCH Output (BTU): 40,000\n\nHeating Efficiency: A-Rated\n\nDimensions:\n\nHeight: 724mm\n\nWidth: 400mm\n\nDepth: 310mm\n\nWeight:\n\nGross (with packaging): 33.2kg\n\nWarranty:\n\n7 Years (subject to manufacturer T\u0026amp;Cs)\n\n\u003ch3\u003eFAQs\u003c\/h3\u003e \u003ch4\u003eIs the 12kW model suitable for larger homes?\u003c\/h4\u003e The 12kW output is best for **small to medium-sized homes** with moderate heating requirements. Larger homes may need a higher-output model. \u003ch4\u003eDo I need a hot water cylinder with this boiler?\u003c\/h4\u003e Yes. As a **system boiler**, it works alongside a stored hot water cylinder to supply hot water efficiently. \u003ch4\u003eCan this boiler be paired with smart heating controls?\u003c\/h4\u003e Absolutely. The Greenstar 4000 range works with a variety of **optional Worcester controls and smart thermostats** to optimise comfort and energy savings.\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":51955277562198,"sku":"146795","price":1246.02,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0905\/4509\/4998\/files\/worcester-greenstar-4000-12kw-lpg-system-boiler-8224754.jpg?v=1772638814","url":"https:\/\/jjbuildingmaterials.co.uk\/products\/worcester-greenstar-4000-12kw-lpg-system-boiler","provider":"JJ Building Materials","version":"1.0","type":"link"}