{"product_id":"worcester-greenstar-4000-21kw-lpg-system","title":"Worcester Greenstar 4000 21kW LPG System","description":"\u003ch3\u003eWorcester Greenstar 4000 21kW LPG System Boiler\u003c\/h3\u003e\n\nThe Worcester Greenstar 4000 21kW LPG System Boiler is the ideal choice for medium-sized homes with one or two bathrooms. Designed as the direct upgrade to the Greenstar 21Ri, this modern boiler combines outstanding energy efficiency with a sleek new look, a full-colour text display, and whisper-quiet operation.\n\nEngineered for reliability and performance, the Greenstar 4000 ensures your home stays warm and comfortable all year round while keeping your energy bills low.\n\n\u003ch3\u003eEfficient, Quiet and Smart\u003c\/h3\u003e\n\nWith an ErP A rating for efficiency, the Greenstar 4000 21kW LPG System Boiler helps reduce gas consumption and energy costs without compromising performance. It features a wide modulation range, intelligently adjusting its output to meet your heating and hot water demands efficiently.\n\nAs Worcester Bosch’s quietest system boiler, it operates discreetly, making it a great fit for homes where space and comfort are priorities.\n\n\u003ch3\u003eModern Design and User-Friendly Controls\u003c\/h3\u003e\n\nThe Greenstar 4000 range introduces a contemporary new design with a clean, white finish and an intuitive full-colour text display, making it easy to set, monitor, and adjust your heating.\n\nIt’s also wirelessly compatible with the Bosch EasyControl system, giving homeowners complete control over their heating from anywhere, via smartphone or tablet.\n\n\u003ch3\u003eVersatile and Future-Ready\u003c\/h3\u003e\n\nPerfect for homes with a hot water storage cylinder, the Greenstar 4000 21kW LPG System Boiler provides efficient central heating while ensuring your stored water is always ready when needed.\n\nIt’s also compatible with Worcester Bosch Greenskies solar panels, allowing you to integrate renewable energy for even greater energy and cost savings.\n\n\u003ch3\u003eBuilt for Efficiency and Convenience\u003c\/h3\u003e\n\nWorcester Bosch has designed the Greenstar 4000 range with both homeowners and installers in mind. The boiler’s compact 724 x 400 x 310mm (HxWxD) dimensions make it easy to fit into a variety of locations, while its lightweight 30.6kg build simplifies installation.\n\nIts internal components are also easily accessible for straightforward servicing and maintenance.\n\n\u003ch3\u003eKey Features \u0026amp; Benefits\u003c\/h3\u003e\n\nA-rated efficiency (ErP) for heating performance\n\n21kW output, perfect for medium-sized homes\n\nWide power range for reduced gas consumption and improved efficiency\n\nExceptionally quiet operation for enhanced comfort\n\nModern new design with a full-colour text display\n\nBosch EasyControl compatible for smart wireless control\n\nCompatible with Greenskies solar panels for renewable energy integration\n\nCompact wall-mounted design for flexible installation\n\n7-year manufacturer’s guarantee for peace of mind\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\nManufacturer: Worcester Bosch\n\nModel: Greenstar 4000 21kW LPG System\n\nBoiler Type: System Boiler\n\nSub Type: Gas System\n\nFuel Type: LPG (Liquefied Petroleum Gas)\n\nMounting: Wall Mounted\n\nHeat Output: 21 kW\n\nErP Rating: A\n\nColour: White\n\nWeight: 30.6 kg\n\nDimensions (HxWxD): 724 x 400 x 310 mm\n\nNoise Level: Exceptionally quiet operation\n\nFitting Location: Internal\n\nEAN: 4057749856722\n\nMPN: 7733600383\n\nProduct Code: PN183939\n\nGuarantee: 7 Years\n\n\u003ch3\u003eReliable Heating for Medium Homes\u003c\/h3\u003e\n\nIf you’re looking for a modern, efficient, and quiet system boiler that delivers dependable heating and hot water, the Worcester Greenstar 4000 21kW LPG System is an excellent choice. Combining award-winning Worcester Bosch engineering with smart technology and energy efficiency, it’s designed to keep your home warm, comfortable, and cost-efficient for years to come.\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":51771449639254,"sku":"146801","price":1455.72,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0905\/4509\/4998\/files\/worcester-greenstar-4000-21kw-lpg-system-2240698.jpg?v=1772639418","url":"https:\/\/jjbuildingmaterials.co.uk\/products\/worcester-greenstar-4000-21kw-lpg-system","provider":"JJ Building Materials","version":"1.0","type":"link"}