{"product_id":"worcester-bosch-greenstar-heatslave-ii-external-18-25-combination-oil-boiler-2022","title":"Worcester Bosch Greenstar Heatslave II External 18\/25 Combination Oil Boiler 2022+","description":"\u003ch2 data-end=\"147\" data-start=\"62\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-end=\"147\" data-start=\"65\"\u003eWorcester Bosch Greenstar Heatslave II External 18\/25 Oil Combi Boiler (2022+)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 data-end=\"176\" data-start=\"149\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-end=\"176\" data-start=\"153\"\u003eProduct Description\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp data-end=\"495\" data-start=\"177\"\u003eThe \u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eWorcester Bosch\u003c\/span\u003e\u003c\/span\u003e Greenstar Heatslave II External 18\/25 Oil Combi Boiler is a powerful and space-saving heating solution designed for outdoor installation. Ideal for homes with limited indoor space, this external unit delivers both central heating and instant hot water from a single appliance.\u003c\/p\u003e\n\u003cp data-end=\"785\" data-start=\"497\"\u003eBuilt for durability and performance, it operates efficiently even in harsh weather conditions, making it a reliable choice for year-round use. The one-piece stainless steel primary baffle allows for quicker servicing and maintenance, while the quiet operation ensures minimal disruption.\u003c\/p\u003e\n\u003cp data-end=\"949\" data-start=\"787\"\u003eWith high hot water output and compatibility with optional programmers and system filters, this boiler offers flexibility, convenience, and long-term reliability.\u003c\/p\u003e\n\u003chr data-end=\"954\" data-start=\"951\"\u003e\n\u003ch3 data-end=\"1001\" data-start=\"956\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-end=\"1001\" data-start=\"960\"\u003eWhy Customers Should Buy This Product\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-end=\"1606\" data-start=\"1002\"\u003e\n\u003cli data-end=\"1053\" data-start=\"1002\"\u003e\n\u003cstrong data-end=\"1029\" data-start=\"1004\"\u003eExternal installation\u003c\/strong\u003e frees up indoor space\u003c\/li\u003e\n\u003cli data-end=\"1111\" data-start=\"1054\"\u003e\n\u003cstrong data-end=\"1083\" data-start=\"1056\"\u003eAll-in-one combi system\u003c\/strong\u003e for heating and hot water\u003c\/li\u003e\n\u003cli data-end=\"1178\" data-start=\"1112\"\u003e\n\u003cstrong data-end=\"1153\" data-start=\"1114\"\u003eHigh hot water flow rate (22 l\/min)\u003c\/strong\u003e for strong performance\u003c\/li\u003e\n\u003cli data-end=\"1234\" data-start=\"1179\"\u003e\n\u003cstrong data-end=\"1196\" data-start=\"1181\"\u003e25kW output\u003c\/strong\u003e suitable for medium to larger homes\u003c\/li\u003e\n\u003cli data-end=\"1300\" data-start=\"1235\"\u003e\n\u003cstrong data-end=\"1272\" data-start=\"1237\"\u003eDesigned for outdoor durability\u003c\/strong\u003e in all weather conditions\u003c\/li\u003e\n\u003cli data-end=\"1349\" data-start=\"1301\"\u003e\n\u003cstrong data-end=\"1322\" data-start=\"1303\"\u003eQuiet operation\u003c\/strong\u003e for minimal noise impact\u003c\/li\u003e\n\u003cli data-end=\"1415\" data-start=\"1350\"\u003e\n\u003cstrong data-end=\"1377\" data-start=\"1352\"\u003eEasy servicing design\u003c\/strong\u003e with stainless steel primary baffle\u003c\/li\u003e\n\u003cli data-end=\"1473\" data-start=\"1416\"\u003e\u003cstrong data-end=\"1471\" data-start=\"1418\"\u003eCompatible with optional programmers and controls\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-end=\"1535\" data-start=\"1474\"\u003e\n\u003cstrong data-end=\"1514\" data-start=\"1476\"\u003eUpgradeable warranty up to 5 years\u003c\/strong\u003e with system filter\u003c\/li\u003e\n\u003cli data-end=\"1606\" data-start=\"1536\"\u003e\n\u003cstrong data-end=\"1561\" data-start=\"1538\"\u003eTrusted reliability\u003c\/strong\u003e from \u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eWorcester Bosch\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"1611\" data-start=\"1608\"\u003e\n\u003ch3 data-end=\"1639\" data-start=\"1613\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-end=\"1639\" data-start=\"1617\"\u003eKey Specifications\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-end=\"1873\" data-start=\"1640\"\u003e\n\u003cli data-end=\"1670\" data-start=\"1640\"\u003e\n\u003cstrong data-end=\"1652\" data-start=\"1642\"\u003eBrand:\u003c\/strong\u003e Worcester Bosch\u003c\/li\u003e\n\u003cli data-end=\"1708\" data-start=\"1671\"\u003e\n\u003cstrong data-end=\"1683\" data-start=\"1673\"\u003eRange:\u003c\/strong\u003e Greenstar Heatslave II\u003c\/li\u003e\n\u003cli data-end=\"1758\" data-start=\"1709\"\u003e\n\u003cstrong data-end=\"1728\" data-start=\"1711\"\u003eProduct Type:\u003c\/strong\u003e Oil Combi Boiler (External)\u003c\/li\u003e\n\u003cli data-end=\"1779\" data-start=\"1759\"\u003e\n\u003cstrong data-end=\"1772\" data-start=\"1761\"\u003eOutput:\u003c\/strong\u003e 25kW\u003c\/li\u003e\n\u003cli data-end=\"1802\" data-start=\"1780\"\u003e\n\u003cstrong data-end=\"1796\" data-start=\"1782\"\u003eFuel Type:\u003c\/strong\u003e Oil\u003c\/li\u003e\n\u003cli data-end=\"1824\" data-start=\"1803\"\u003e\n\u003cstrong data-end=\"1820\" data-start=\"1805\"\u003eERP Rating:\u003c\/strong\u003e B\u003c\/li\u003e\n\u003cli data-end=\"1873\" data-start=\"1825\"\u003e\n\u003cstrong data-end=\"1845\" data-start=\"1827\"\u003eMounting Type:\u003c\/strong\u003e Floor Standing (External)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1892\" data-start=\"1875\"\u003e\u003cstrong data-end=\"1890\" data-start=\"1875\"\u003eDimensions:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1959\" data-start=\"1893\"\u003e\n\u003cli data-end=\"1915\" data-start=\"1893\"\u003e\n\u003cstrong data-end=\"1906\" data-start=\"1895\"\u003eHeight:\u003c\/strong\u003e 950 mm\u003c\/li\u003e\n\u003cli data-end=\"1937\" data-start=\"1916\"\u003e\n\u003cstrong data-end=\"1928\" data-start=\"1918\"\u003eWidth:\u003c\/strong\u003e 640 mm\u003c\/li\u003e\n\u003cli data-end=\"1959\" data-start=\"1938\"\u003e\n\u003cstrong data-end=\"1950\" data-start=\"1940\"\u003eDepth:\u003c\/strong\u003e 770 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1979\" data-start=\"1961\"\u003e\u003cstrong data-end=\"1977\" data-start=\"1961\"\u003ePerformance:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"2130\" data-start=\"1980\"\u003e\n\u003cli data-end=\"2006\" data-start=\"1980\"\u003e\n\u003cstrong data-end=\"1998\" data-start=\"1982\"\u003eHeat Output:\u003c\/strong\u003e 25 kW\u003c\/li\u003e\n\u003cli data-end=\"2037\" data-start=\"2007\"\u003e\n\u003cstrong data-end=\"2024\" data-start=\"2009\"\u003eBTU Output:\u003c\/strong\u003e 85,000 BTU\u003c\/li\u003e\n\u003cli data-end=\"2090\" data-start=\"2038\"\u003e\n\u003cstrong data-end=\"2074\" data-start=\"2040\"\u003eHot Water Flow Rate (ΔT 35°C):\u003c\/strong\u003e 22 litres\/min\u003c\/li\u003e\n\u003cli data-end=\"2130\" data-start=\"2091\"\u003e\n\u003cstrong data-end=\"2122\" data-start=\"2093\"\u003eCH Condensing Max Output:\u003c\/strong\u003e 25 kW\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2147\" data-start=\"2132\"\u003e\u003cstrong data-end=\"2145\" data-start=\"2132\"\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"2310\" data-start=\"2148\"\u003e\n\u003cli data-end=\"2180\" data-start=\"2148\"\u003eExternal weatherproof design\u003c\/li\u003e\n\u003cli data-end=\"2215\" data-start=\"2181\"\u003eStainless steel primary baffle\u003c\/li\u003e\n\u003cli data-end=\"2231\" data-start=\"2216\"\u003eLCD display\u003c\/li\u003e\n\u003cli data-end=\"2251\" data-start=\"2232\"\u003eQuiet operation\u003c\/li\u003e\n\u003cli data-end=\"2272\" data-start=\"2252\"\u003eSolar compatible\u003c\/li\u003e\n\u003cli data-end=\"2310\" data-start=\"2273\"\u003eOptional programmer compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2323\" data-start=\"2312\"\u003e\u003cstrong data-end=\"2321\" data-start=\"2312\"\u003eFlue:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"2361\" data-start=\"2324\"\u003e\n\u003cli data-end=\"2361\" data-start=\"2324\"\u003e\n\u003cstrong data-end=\"2355\" data-start=\"2326\"\u003eMax Vertical Flue Length:\u003c\/strong\u003e 5 m\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2378\" data-start=\"2363\"\u003e\u003cstrong data-end=\"2376\" data-start=\"2363\"\u003eWarranty:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"2467\" data-start=\"2379\"\u003e\n\u003cli data-end=\"2404\" data-start=\"2379\"\u003e\n\u003cstrong data-end=\"2394\" data-start=\"2381\"\u003eStandard:\u003c\/strong\u003e 2 Years\u003c\/li\u003e\n\u003cli data-end=\"2467\" data-start=\"2405\"\u003e\n\u003cstrong data-end=\"2420\" data-start=\"2407\"\u003eExtended:\u003c\/strong\u003e Up to 5 Years (with Greenstar system filter)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"2472\" data-start=\"2469\"\u003e\n\u003ch3 data-end=\"2510\" data-start=\"2474\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-end=\"2510\" data-start=\"2478\"\u003eInstallation \u0026amp; Compatibility\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-end=\"2682\" data-start=\"2511\"\u003e\n\u003cli data-end=\"2577\" data-start=\"2511\"\u003eSuitable for properties requiring external boiler installation\u003c\/li\u003e\n\u003cli data-end=\"2621\" data-start=\"2578\"\u003eIdeal for off-grid homes using oil fuel\u003c\/li\u003e\n\u003cli data-end=\"2682\" data-start=\"2622\"\u003eCompatible with Worcester Bosch controls and accessories\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"2687\" data-start=\"2684\"\u003e\n\u003ch3 data-end=\"2714\" data-start=\"2689\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-end=\"2714\" data-start=\"2693\"\u003eWhat’s in the Box\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-end=\"2783\" data-start=\"2715\"\u003e\n\u003cli data-end=\"2753\" data-start=\"2715\"\u003e1 x External Oil Combi Boiler Unit\u003c\/li\u003e\n\u003cli data-end=\"2783\" data-start=\"2754\"\u003eInstallation Instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"2788\" data-start=\"2785\"\u003e\n\u003ch3 data-end=\"2819\" data-start=\"2790\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-end=\"2819\" data-start=\"2794\"\u003eImportant Information\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-end=\"2970\" data-start=\"2820\"\u003e\n\u003cli data-end=\"2868\" data-start=\"2820\"\u003eOil-fired boiler – requires oil storage tank\u003c\/li\u003e\n\u003cli data-end=\"2899\" data-start=\"2869\"\u003eExternal installation only\u003c\/li\u003e\n\u003cli data-end=\"2970\" data-start=\"2900\"\u003eFlue and additional accessories may be required depending on setup\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"City Plumbing","offers":[{"title":"Default Title","offer_id":53083224277330,"sku":"7731600264","price":4100.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0904\/3001\/3778\/files\/GPID_1100740702_IMG_02.jpg?v=1775044976","url":"https:\/\/www.tradeplumbing.co.uk\/products\/worcester-bosch-greenstar-heatslave-ii-external-18-25-combination-oil-boiler-2022","provider":"Tradeplumbing","version":"1.0","type":"link"}