{"product_id":"worcester-bosch-4000-25kw-combi-boiler-with-15mm-scale-reducer","title":"Worcester Bosch 4000 25kW Combi Boiler with 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=\"70\" data-end=\"682\" class=\"PDq2pG_selectionAnchorContainer\"\u003eThe \u003cstrong data-start=\"74\" data-end=\"140\"\u003eWorcester Bosch 4000 25kW Combi Boiler with 15mm Scale Reducer\u003c\/strong\u003e is a premium heating package designed to provide reliable central heating and instant mains-pressure hot water for small to medium-sized homes. Supplied with a \u003cstrong data-start=\"301\" data-end=\"323\"\u003e15mm Scale Reducer\u003c\/strong\u003e, this complete solution helps minimise limescale build-up in hard water areas, protecting the boiler and maintaining long-term efficiency and performance. The Greenstar 4000 is one of Worcester Bosch's quietest and most advanced combi boilers, delivering outstanding comfort, energy efficiency, and everyday reliability. \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=\"684\" data-end=\"1102\"\u003ePart of the award-winning \u003cstrong data-start=\"710\" data-end=\"744\"\u003eWorcester Bosch Greenstar 4000\u003c\/strong\u003e range, this boiler features \u003cstrong data-start=\"773\" data-end=\"807\"\u003eQuickTap® hot water technology\u003c\/strong\u003e, a modern full-colour display, intelligent modulation, and compatibility with \u003cstrong data-start=\"886\" data-end=\"901\"\u003eEasyControl\u003c\/strong\u003e smart heating controls. Its compact design makes it suitable for installation inside a standard kitchen cupboard while delivering exceptional heating performance. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"1104\" data-end=\"1107\"\u003e\n\u003ch2 data-section-id=\"1ma7m6t\" data-start=\"1109\" data-end=\"1124\"\u003eKey Features\u003c\/h2\u003e\n\u003cul data-start=\"1126\" data-end=\"1773\"\u003e\n\u003cli data-section-id=\"aiszi2\" data-start=\"1126\" data-end=\"1171\"\u003e25kW Natural Gas Combination (Combi) Boiler\u003c\/li\u003e\n\u003cli data-section-id=\"1sqr91l\" data-start=\"1172\" data-end=\"1205\"\u003eIncludes \u003cstrong data-start=\"1183\" data-end=\"1205\"\u003e15mm Scale Reducer\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"778pqs\" data-start=\"1206\" data-end=\"1234\"\u003e\n\u003cstrong data-start=\"1208\" data-end=\"1222\"\u003eFuel Type:\u003c\/strong\u003e Natural Gas\u003c\/li\u003e\n\u003cli data-section-id=\"1ml6vqd\" data-start=\"1235\" data-end=\"1269\"\u003eInstant mains-pressure hot water\u003c\/li\u003e\n\u003cli data-section-id=\"b7wgm9\" data-start=\"1270\" data-end=\"1311\"\u003eNo separate hot water cylinder required\u003c\/li\u003e\n\u003cli data-section-id=\"1chququ\" data-start=\"1312\" data-end=\"1355\"\u003eErP \u003cstrong data-start=\"1318\" data-end=\"1329\"\u003eA Rated\u003c\/strong\u003e for heating and hot water\u003c\/li\u003e\n\u003cli data-section-id=\"1olqsw9\" data-start=\"1356\" data-end=\"1382\"\u003eUp to \u003cstrong data-start=\"1364\" data-end=\"1382\"\u003e94% efficiency\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"9eej40\" data-start=\"1383\" data-end=\"1406\"\u003eSuper quiet operation\u003c\/li\u003e\n\u003cli data-section-id=\"1dib03q\" data-start=\"1407\" data-end=\"1433\"\u003e\n\u003cstrong data-start=\"1409\" data-end=\"1423\"\u003eQuiet Mark\u003c\/strong\u003e certified\u003c\/li\u003e\n\u003cli data-section-id=\"2apaa8\" data-start=\"1434\" data-end=\"1477\"\u003e\n\u003cstrong data-start=\"1436\" data-end=\"1449\"\u003eQuickTap®\u003c\/strong\u003e hot water pre-heat function\u003c\/li\u003e\n\u003cli data-section-id=\"ncbmfu\" data-start=\"1478\" data-end=\"1510\"\u003eStainless steel heat exchanger\u003c\/li\u003e\n\u003cli data-section-id=\"1yic0b3\" data-start=\"1511\" data-end=\"1536\"\u003eFull-colour LCD display\u003c\/li\u003e\n\u003cli data-section-id=\"bg2k3b\" data-start=\"1537\" data-end=\"1566\"\u003eCompact cupboard-fit design\u003c\/li\u003e\n\u003cli data-section-id=\"1jqow0c\" data-start=\"1567\" data-end=\"1616\"\u003eCompatible with \u003cstrong data-start=\"1585\" data-end=\"1616\"\u003eWorcester Bosch EasyControl\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"iape4y\" data-start=\"1617\" data-end=\"1648\"\u003eIntelligent boiler modulation\u003c\/li\u003e\n\u003cli data-section-id=\"tgfc2k\" data-start=\"1649\" data-end=\"1773\"\u003e\n\u003cstrong data-start=\"1651\" data-end=\"1686\"\u003e10-Year manufacturer's warranty\u003c\/strong\u003e (subject to installation and registration terms) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1775\" data-end=\"1778\"\u003e\n\u003ch2 data-section-id=\"1kg6hdq\" data-start=\"1780\" data-end=\"1814\"\u003eIdeal for Small to Medium Homes\u003c\/h2\u003e\n\u003cp data-start=\"1816\" data-end=\"2143\"\u003eThe \u003cstrong data-start=\"1820\" data-end=\"1862\"\u003eWorcester Bosch 4000 25kW Combi Boiler\u003c\/strong\u003e is ideal for \u003cstrong data-start=\"1876\" data-end=\"1930\"\u003eapartments, flats, and small to medium-sized homes\u003c\/strong\u003e with one bathroom. It provides both central heating and domestic hot water directly from the mains, removing the need for a separate hot water cylinder while delivering dependable performance throughout the year.\u003c\/p\u003e\n\u003cp data-start=\"2145\" data-end=\"2328\"\u003eThe included \u003cstrong data-start=\"2158\" data-end=\"2180\"\u003e15mm Scale Reducer\u003c\/strong\u003e helps reduce limescale accumulation, making this package particularly suitable for homes in hard water areas. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"2330\" data-end=\"2333\"\u003e\n\u003ch2 data-section-id=\"kitnfj\" data-start=\"2335\" data-end=\"2375\"\u003eEfficient Heating \u0026amp; Instant Hot Water\u003c\/h2\u003e\n\u003cp data-start=\"2377\" data-end=\"2645\"\u003eDelivering \u003cstrong data-start=\"2388\" data-end=\"2422\"\u003e25kW domestic hot water output\u003c\/strong\u003e and a \u003cstrong data-start=\"2429\" data-end=\"2473\"\u003e10.2 litres per minute flow rate (Δ35°C)\u003c\/strong\u003e, the Greenstar 4000 provides consistent hot water for everyday household use while maintaining efficient central heating performance. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"2647\" data-end=\"2948\"\u003eIts innovative \u003cstrong data-start=\"2662\" data-end=\"2675\"\u003eQuickTap®\u003c\/strong\u003e technology pre-heats the plate heat exchanger, helping reduce waiting time for hot water while minimising water wastage. Combined with intelligent condensing technology, it delivers exceptional efficiency without compromising comfort. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"2950\" data-end=\"2953\"\u003e\n\u003ch2 data-section-id=\"11nmlxs\" data-start=\"2955\" data-end=\"2972\"\u003eCompact Design\u003c\/h2\u003e\n\u003cp data-start=\"2974\" data-end=\"3112\"\u003eDesigned to fit neatly inside a standard kitchen cupboard, the Greenstar 4000 combines powerful performance with a space-saving footprint.\u003c\/p\u003e\n\u003ch3 data-section-id=\"bpec4l\" data-start=\"3114\" data-end=\"3128\"\u003eDimensions\u003c\/h3\u003e\n\u003cul data-start=\"3130\" data-end=\"3187\"\u003e\n\u003cli data-section-id=\"1qr0f6k\" data-start=\"3130\" data-end=\"3149\"\u003e\n\u003cstrong data-start=\"3132\" data-end=\"3143\"\u003eHeight:\u003c\/strong\u003e 724mm\u003c\/li\u003e\n\u003cli data-section-id=\"1ferdmo\" data-start=\"3150\" data-end=\"3168\"\u003e\n\u003cstrong data-start=\"3152\" data-end=\"3162\"\u003eWidth:\u003c\/strong\u003e 400mm\u003c\/li\u003e\n\u003cli data-section-id=\"p2e4lp\" data-start=\"3169\" data-end=\"3187\"\u003e\n\u003cstrong data-start=\"3171\" data-end=\"3181\"\u003eDepth:\u003c\/strong\u003e 310mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3189\" data-end=\"3397\"\u003eThe supplied \u003cstrong data-start=\"3202\" data-end=\"3224\"\u003e15mm Scale Reducer\u003c\/strong\u003e provides additional protection against limescale, helping to maintain boiler efficiency and reduce long-term maintenance requirements. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"3399\" data-end=\"3402\"\u003e\n\u003ch2 data-section-id=\"ex875a\" data-start=\"3404\" data-end=\"3433\"\u003eAdvanced Energy Efficiency\u003c\/h2\u003e\n\u003cp data-start=\"3435\" data-end=\"3573\"\u003eRated \u003cstrong data-start=\"3441\" data-end=\"3450\"\u003eErP A\u003c\/strong\u003e and delivering up to \u003cstrong data-start=\"3472\" data-end=\"3490\"\u003e94% efficiency\u003c\/strong\u003e, the Greenstar 4000 helps reduce gas consumption and lower household energy bills.\u003c\/p\u003e\n\u003cp data-start=\"3575\" data-end=\"3787\"\u003eIts advanced condensing technology and wide modulation range enable the boiler to operate efficiently even at lower heating demands, providing excellent seasonal performance. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"3789\" data-end=\"3792\"\u003e\n\u003ch2 data-section-id=\"bvzj9p\" data-start=\"3794\" data-end=\"3832\"\u003eSmart Heating Control Compatibility\u003c\/h2\u003e\n\u003cp data-start=\"3834\" data-end=\"4096\"\u003eThe Greenstar 4000 is fully compatible with \u003cstrong data-start=\"3878\" data-end=\"3909\"\u003eWorcester Bosch EasyControl\u003c\/strong\u003e, allowing homeowners to control their heating remotely, create personalised schedules, and optimise energy usage for greater comfort and efficiency. \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=\"4378\"\u003eEngineered with Worcester Bosch's renowned build quality, the Greenstar 4000 features a \u003cstrong data-start=\"4235\" data-end=\"4269\"\u003estainless steel heat exchanger\u003c\/strong\u003e, installer-friendly internal layout, and a modern full-colour interface for easy monitoring and diagnostics.\u003c\/p\u003e\n\u003cp data-start=\"4380\" data-end=\"4575\"\u003eIts \u003cstrong data-start=\"4384\" data-end=\"4398\"\u003eQuiet Mark\u003c\/strong\u003e certification makes it one of the quietest boilers in its class, making it particularly suitable for kitchens and open-plan living spaces. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"4577\" data-end=\"4580\"\u003e\n\u003ch2 data-section-id=\"15okmn6\" data-start=\"4582\" data-end=\"4609\"\u003eWarranty \u0026amp; Peace of Mind\u003c\/h2\u003e\n\u003cp data-start=\"4611\" data-end=\"4914\"\u003eThe \u003cstrong data-start=\"4615\" data-end=\"4681\"\u003eWorcester Bosch 4000 25kW Combi Boiler with 15mm Scale Reducer\u003c\/strong\u003e includes a \u003cstrong data-start=\"4693\" data-end=\"4728\"\u003e10-Year manufacturer's warranty\u003c\/strong\u003e (subject to installation by an accredited installer and product registration), 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=\"4916\" data-end=\"4919\"\u003e\n\u003ch2 data-section-id=\"1rzbr07\" data-start=\"4921\" data-end=\"5002\"\u003eWhy Choose the Worcester Bosch 4000 25kW Combi Boiler with 15mm Scale Reducer?\u003c\/h2\u003e\n\u003cul data-start=\"5004\" data-end=\"5381\"\u003e\n\u003cli data-section-id=\"1uqrhae\" data-start=\"5004\" data-end=\"5049\"\u003ePremium boiler and scale protection package\u003c\/li\u003e\n\u003cli data-section-id=\"hnecov\" data-start=\"5050\" data-end=\"5083\"\u003eEfficient \u003cstrong data-start=\"5062\" data-end=\"5070\"\u003e25kW\u003c\/strong\u003e combi boiler\u003c\/li\u003e\n\u003cli data-section-id=\"b4wp0q\" data-start=\"5084\" data-end=\"5112\"\u003e\n\u003cstrong data-start=\"5086\" data-end=\"5101\"\u003eNatural Gas\u003c\/strong\u003e compatible\u003c\/li\u003e\n\u003cli data-section-id=\"w5mk84\" data-start=\"5113\" data-end=\"5158\"\u003e\n\u003cstrong data-start=\"5115\" data-end=\"5129\"\u003e10.2 L\/min\u003c\/strong\u003e domestic hot water flow rate\u003c\/li\u003e\n\u003cli data-section-id=\"1sqr91l\" data-start=\"5159\" data-end=\"5192\"\u003eIncludes \u003cstrong data-start=\"5170\" data-end=\"5192\"\u003e15mm Scale Reducer\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1kwci12\" data-start=\"5193\" data-end=\"5215\"\u003eQuiet Mark certified\u003c\/li\u003e\n\u003cli data-section-id=\"1xcvtl2\" data-start=\"5216\" data-end=\"5248\"\u003eQuickTap® hot water technology\u003c\/li\u003e\n\u003cli data-section-id=\"50y3yf\" data-start=\"5249\" data-end=\"5273\"\u003eEasyControl compatible\u003c\/li\u003e\n\u003cli data-section-id=\"bg2k3b\" data-start=\"5274\" data-end=\"5303\"\u003eCompact cupboard-fit design\u003c\/li\u003e\n\u003cli data-section-id=\"x19j29\" data-start=\"5304\" data-end=\"5381\"\u003e\u003cstrong data-start=\"5306\" data-end=\"5341\"\u003e10-Year manufacturer's warranty\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\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":49046143172763,"sku":null,"price":1085.0,"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-4000-25kw-combi-boiler-with-15mm-scale-reducer","provider":"Boiler Lines","version":"1.0","type":"link"}