{"product_id":"worcester-bosch-greenstar-4000-18kw-system-boiler-including-flue-15mm-scale-reducer","title":"Worcester Bosch Greenstar 4000 18kW System Boiler Including Flue \u0026 15mm Scale Reducer","description":"\u003cdiv class=\"product__description\"\u003e\n\u003cdiv class=\"product-description-extended\"\u003e\n\u003cdiv class=\"product__description\"\u003e\n\u003cdiv class=\"product-description-extended\"\u003e\n\u003cdiv class=\"product__description\"\u003e\n\u003cdiv class=\"product-description-extended\"\u003e\n\u003cp data-start=\"93\" data-end=\"726\" class=\"PDq2pG_selectionAnchorContainer\"\u003eThe \u003cstrong data-start=\"97\" data-end=\"186\"\u003eWorcester Bosch Greenstar 4000 18kW System Boiler Including Flue \u0026amp; 15mm Scale Reducer\u003c\/strong\u003e is a premium heating package designed for homes with a sealed heating system and a separate hot water cylinder. Supplied with a \u003cstrong data-start=\"315\" data-end=\"338\"\u003ehorizontal flue kit\u003c\/strong\u003e and a \u003cstrong data-start=\"345\" data-end=\"367\"\u003e15mm Scale Reducer\u003c\/strong\u003e, this complete solution provides reliable, energy-efficient central heating while helping to minimise limescale build-up in hard water areas. Built with Worcester Bosch's renowned engineering, quiet operation, and smart heating compatibility, the Greenstar 4000 offers dependable performance and long-lasting efficiency. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"728\" data-end=\"1159\"\u003eDesigned for \u003cstrong data-start=\"741\" data-end=\"772\"\u003esmall to medium-sized homes\u003c\/strong\u003e, the \u003cstrong data-start=\"778\" data-end=\"815\"\u003eGreenstar 4000 18kW System Boiler\u003c\/strong\u003e features a sleek contemporary design, an intuitive full-colour display, and compatibility with Worcester Bosch EasyControl. Its compact dimensions and installer-friendly layout make it an excellent replacement for older system boilers while delivering efficient and consistent heating throughout the home. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"1161\" data-end=\"1164\"\u003e\n\u003ch2 data-section-id=\"1ma7m6t\" data-start=\"1166\" data-end=\"1181\"\u003eKey Features\u003c\/h2\u003e\n\u003cul data-start=\"1183\" data-end=\"1823\"\u003e\n\u003cli data-section-id=\"18t1zlz\" data-start=\"1183\" data-end=\"1203\"\u003e18kW System Boiler\u003c\/li\u003e\n\u003cli data-section-id=\"mxek2d\" data-start=\"1204\" data-end=\"1238\"\u003eIncludes \u003cstrong data-start=\"1215\" data-end=\"1238\"\u003eHorizontal Flue Kit\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1sqr91l\" data-start=\"1239\" data-end=\"1272\"\u003eIncludes \u003cstrong data-start=\"1250\" data-end=\"1272\"\u003e15mm Scale Reducer\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"778pqs\" data-start=\"1273\" data-end=\"1301\"\u003e\n\u003cstrong data-start=\"1275\" data-end=\"1289\"\u003eFuel Type:\u003c\/strong\u003e Natural Gas\u003c\/li\u003e\n\u003cli data-section-id=\"zlkba\" data-start=\"1302\" data-end=\"1374\"\u003eDesigned for sealed heating systems with a separate hot water cylinder\u003c\/li\u003e\n\u003cli data-section-id=\"ufviff\" data-start=\"1375\" data-end=\"1404\"\u003eErP \u003cstrong data-start=\"1381\" data-end=\"1392\"\u003eA Rated\u003c\/strong\u003e for heating\u003c\/li\u003e\n\u003cli data-section-id=\"17y6d5e\" data-start=\"1405\" data-end=\"1447\"\u003eUp to \u003cstrong data-start=\"1413\" data-end=\"1447\"\u003e94% central heating efficiency\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1kwci12\" data-start=\"1448\" data-end=\"1470\"\u003eQuiet Mark certified\u003c\/li\u003e\n\u003cli data-section-id=\"1udaan\" data-start=\"1471\" data-end=\"1500\"\u003ePremium full-colour display\u003c\/li\u003e\n\u003cli data-section-id=\"1p0shaf\" data-start=\"1501\" data-end=\"1529\"\u003e\n\u003cstrong data-start=\"1503\" data-end=\"1518\"\u003eEasyControl\u003c\/strong\u003e compatible\u003c\/li\u003e\n\u003cli data-section-id=\"gb5uwd\" data-start=\"1530\" data-end=\"1548\"\u003eSolar compatible\u003c\/li\u003e\n\u003cli data-section-id=\"6kzyd4\" data-start=\"1549\" data-end=\"1596\"\u003eWide modulation range for improved efficiency\u003c\/li\u003e\n\u003cli data-section-id=\"fxzaq2\" data-start=\"1597\" data-end=\"1626\"\u003eCompact wall-mounted design\u003c\/li\u003e\n\u003cli data-section-id=\"krkg7y\" data-start=\"1627\" data-end=\"1823\"\u003e\n\u003cstrong data-start=\"1629\" data-end=\"1670\"\u003eUp to 10-Year manufacturer's warranty\u003c\/strong\u003e (subject to installation, registration, use of a Worcester Bosch System Filter, and manufacturer's warranty terms) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1825\" data-end=\"1828\"\u003e\n\u003ch2 data-section-id=\"jqrqi2\" data-start=\"1830\" data-end=\"1865\"\u003eIdeal for Modern Heating Systems\u003c\/h2\u003e\n\u003cp data-start=\"1867\" data-end=\"2169\"\u003eThe \u003cstrong data-start=\"1871\" data-end=\"1924\"\u003eWorcester Bosch Greenstar 4000 18kW System Boiler\u003c\/strong\u003e is ideal for \u003cstrong data-start=\"1938\" data-end=\"1969\"\u003esmall to medium-sized homes\u003c\/strong\u003e with a sealed heating system and a separate hot water cylinder. It provides dependable central heating while delivering stored domestic hot water efficiently through the property's existing cylinder.\u003c\/p\u003e\n\u003cp data-start=\"2171\" data-end=\"2388\"\u003eThe included \u003cstrong data-start=\"2184\" data-end=\"2206\"\u003e15mm Scale Reducer\u003c\/strong\u003e helps reduce limescale formation, protecting the boiler's heat exchanger and supporting long-term efficiency, particularly in hard water areas. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"2390\" data-end=\"2393\"\u003e\n\u003ch2 data-section-id=\"rpdj3a\" data-start=\"2395\" data-end=\"2434\"\u003ePowerful Central Heating Performance\u003c\/h2\u003e\n\u003cp data-start=\"2436\" data-end=\"2838\"\u003eDelivering an \u003cstrong data-start=\"2450\" data-end=\"2481\"\u003e18kW central heating output\u003c\/strong\u003e, the Greenstar 4000 System Boiler provides efficient and consistent heating throughout the home. Advanced condensing technology and a wide modulation range automatically adjust the boiler's output to match demand, helping reduce gas consumption while maintaining comfortable indoor temperatures and lower energy bills. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"2840\" data-end=\"2843\"\u003e\n\u003ch2 data-section-id=\"1henl9l\" data-start=\"2845\" data-end=\"2875\"\u003eCompact Contemporary Design\u003c\/h2\u003e\n\u003cp data-start=\"2877\" data-end=\"3035\"\u003eDesigned to fit neatly into kitchens, utility rooms, or airing cupboards, the Greenstar 4000 combines premium styling with excellent installation flexibility.\u003c\/p\u003e\n\u003ch3 data-section-id=\"bpec4l\" data-start=\"3037\" data-end=\"3051\"\u003eDimensions\u003c\/h3\u003e\n\u003cul data-start=\"3053\" data-end=\"3110\"\u003e\n\u003cli data-section-id=\"1qr0f6k\" data-start=\"3053\" data-end=\"3072\"\u003e\n\u003cstrong data-start=\"3055\" data-end=\"3066\"\u003eHeight:\u003c\/strong\u003e 724mm\u003c\/li\u003e\n\u003cli data-section-id=\"1ferdmo\" data-start=\"3073\" data-end=\"3091\"\u003e\n\u003cstrong data-start=\"3075\" data-end=\"3085\"\u003eWidth:\u003c\/strong\u003e 400mm\u003c\/li\u003e\n\u003cli data-section-id=\"p2e4lp\" data-start=\"3092\" data-end=\"3110\"\u003e\n\u003cstrong data-start=\"3094\" data-end=\"3104\"\u003eDepth:\u003c\/strong\u003e 310mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3112\" data-end=\"3309\"\u003eThe included \u003cstrong data-start=\"3125\" data-end=\"3144\"\u003ehorizontal flue\u003c\/strong\u003e and \u003cstrong data-start=\"3149\" data-end=\"3171\"\u003e15mm Scale Reducer\u003c\/strong\u003e provide a complete installation package while helping ensure reliable long-term system performance. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"3311\" data-end=\"3314\"\u003e\n\u003ch2 data-section-id=\"ex875a\" data-start=\"3316\" data-end=\"3345\"\u003eAdvanced Energy Efficiency\u003c\/h2\u003e\n\u003cp data-start=\"3347\" data-end=\"3523\"\u003eRated \u003cstrong data-start=\"3353\" data-end=\"3362\"\u003eErP A\u003c\/strong\u003e with up to \u003cstrong data-start=\"3374\" data-end=\"3408\"\u003e94% central heating efficiency\u003c\/strong\u003e, the Greenstar 4000 uses advanced condensing technology to maximise heat recovery while reducing fuel consumption.\u003c\/p\u003e\n\u003cp data-start=\"3525\" data-end=\"3728\"\u003eIts intelligent modulation adjusts heating output according to demand, improving efficiency and helping homeowners reduce running costs without compromising comfort. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"3730\" data-end=\"3733\"\u003e\n\u003ch2 data-section-id=\"bvzj9p\" data-start=\"3735\" data-end=\"3773\"\u003eSmart Heating Control Compatibility\u003c\/h2\u003e\n\u003cp data-start=\"3775\" data-end=\"4096\"\u003eThe Greenstar 4000 is fully compatible with \u003cstrong data-start=\"3819\" data-end=\"3850\"\u003eWorcester Bosch EasyControl\u003c\/strong\u003e, allowing homeowners to control heating schedules remotely via smartphone or tablet. It is also compatible with \u003cstrong data-start=\"3963\" data-end=\"3988\"\u003esolar thermal systems\u003c\/strong\u003e, providing greater flexibility for future renewable heating upgrades. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"4098\" data-end=\"4101\"\u003e\n\u003ch2 data-section-id=\"19rweb4\" data-start=\"4103\" data-end=\"4145\"\u003eReliable Performance \u0026amp; Easy Maintenance\u003c\/h2\u003e\n\u003cp data-start=\"4147\" data-end=\"4357\"\u003eBuilt to Worcester Bosch's renowned quality standards, the Greenstar 4000 features durable internal components, Quiet Mark certified operation, and a clear full-colour display for simple monitoring and control.\u003c\/p\u003e\n\u003cp data-start=\"4359\" data-end=\"4568\"\u003eIts installer-friendly design with front-access servicing simplifies installation and ongoing maintenance, helping reduce servicing time and improve long-term reliability. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"4570\" data-end=\"4573\"\u003e\n\u003ch2 data-section-id=\"15okmn6\" data-start=\"4575\" data-end=\"4602\"\u003eWarranty \u0026amp; Peace of Mind\u003c\/h2\u003e\n\u003cp data-start=\"4604\" data-end=\"4954\"\u003eThe \u003cstrong data-start=\"4608\" data-end=\"4697\"\u003eWorcester Bosch Greenstar 4000 18kW System Boiler Including Flue \u0026amp; 15mm Scale Reducer\u003c\/strong\u003e includes \u003cstrong data-start=\"4707\" data-end=\"4750\"\u003eup to a 10-Year manufacturer's warranty\u003c\/strong\u003e when installed and registered in accordance with Worcester Bosch's qualifying warranty conditions, providing long-term confidence and dependable after-sales support. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"4956\" data-end=\"4959\"\u003e\n\u003ch2 data-section-id=\"mtaefy\" data-start=\"4961\" data-end=\"5065\"\u003eWhy Choose the Worcester Bosch Greenstar 4000 18kW System Boiler Including Flue \u0026amp; 15mm Scale Reducer?\u003c\/h2\u003e\n\u003cul data-start=\"5067\" data-end=\"5429\"\u003e\n\u003cli data-section-id=\"lb8gtc\" data-start=\"5067\" data-end=\"5106\"\u003ePremium Worcester Bosch system boiler\u003c\/li\u003e\n\u003cli data-section-id=\"1k3a6yi\" data-start=\"5107\" data-end=\"5132\"\u003e\u003cstrong data-start=\"5109\" data-end=\"5132\"\u003e18kW heating output\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-section-id=\"aj1sub\" data-start=\"5133\" data-end=\"5163\"\u003eIncludes \u003cstrong data-start=\"5144\" data-end=\"5163\"\u003eHorizontal Flue\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1sqr91l\" data-start=\"5164\" data-end=\"5197\"\u003eIncludes \u003cstrong data-start=\"5175\" data-end=\"5197\"\u003e15mm Scale Reducer\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"15a4ur8\" data-start=\"5198\" data-end=\"5235\"\u003eDesigned for sealed heating systems\u003c\/li\u003e\n\u003cli data-section-id=\"17y6d5e\" data-start=\"5236\" data-end=\"5278\"\u003eUp to \u003cstrong data-start=\"5244\" data-end=\"5278\"\u003e94% central heating efficiency\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1kwci12\" data-start=\"5279\" data-end=\"5301\"\u003eQuiet Mark certified\u003c\/li\u003e\n\u003cli data-section-id=\"50y3yf\" data-start=\"5302\" data-end=\"5326\"\u003eEasyControl compatible\u003c\/li\u003e\n\u003cli data-section-id=\"gb5uwd\" data-start=\"5327\" data-end=\"5345\"\u003eSolar compatible\u003c\/li\u003e\n\u003cli data-section-id=\"qsglj3\" data-start=\"5346\" data-end=\"5429\"\u003e\n\u003cstrong data-start=\"5348\" data-end=\"5389\"\u003eUp to 10-Year manufacturer's warranty\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-section-id=\"10btkw6\" data-start=\"5431\" data-end=\"5444\"\u003e\u003cbr\u003e\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Mağazam","offers":[{"title":"Default Title","offer_id":49048565776539,"sku":null,"price":1248.37,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0773\/2091\/3051\/files\/4000-fron-facing-1_1.webp?v=1784640473","url":"https:\/\/boilerlines.co.uk\/products\/worcester-bosch-greenstar-4000-18kw-system-boiler-including-flue-15mm-scale-reducer","provider":"Boiler Lines","version":"1.0","type":"link"}