{"product_id":"vaillant-ecotec-plus-831-12-plate-heat-exchanger-refurbished-178973","title":"Vaillant Ecotec Plus 831 12 Plate Heat Exchanger – Refurbished | Part No. 178973","description":"\u003cp\u003eIf your Vaillant Ecotec Plus boiler is struggling with inconsistent hot water temperatures or reduced flow, a failing domestic hot water (DHW) plate heat exchanger is a common culprit. The \u003cstrong\u003eVaillant Ecotec Plus 831 12 Plate Heat Exchanger (Part No. 178973)\u003c\/strong\u003e is a professionally refurbished direct replacement that restores efficient heat transfer, helping your boiler deliver stable, reliable hot water once more.\u003c\/p\u003e\n\n\u003cp\u003eEach unit is thoroughly cleaned, tested, and performance-verified before dispatch, offering genuine manufacturer-grade quality at a substantially lower cost than a new component. The 12-plate design provides a precise like-for-like replacement for compatible Vaillant Ecotec Plus 824, 831, and 837 models, fitting without modification.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCompatible Boiler Models\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003cth style=\"padding:8px;border:1px solid #ddd;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding:8px;border:1px solid #ddd;\"\u003eVariant\u003c\/th\u003e\n\u003cth style=\"padding:8px;border:1px solid #ddd;\"\u003eYears\u003c\/th\u003e\n\u003cth style=\"padding:8px;border:1px solid #ddd;\"\u003eGC No.\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eEcotec Plus 824 VUW 246\/3-5\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eBase\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e2005–2012\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e47-044-31\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eEcotec Plus 824 VUW 246\/3-5 R1\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eR1\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e2005–2011\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e47-044-31 R1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eEcotec Plus 824 VUW 246\/3-5 R3\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eR3\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e2011–2012\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e47-044-31 R2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eEcotec Plus 831 VUW 316\/3-5\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eBase\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e2005–2013\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e47-044-32\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eEcotec Plus 831 VUW 316\/3-5 R1\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eR1\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e2005–2011\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e47-044-32 R1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eEcotec Plus 831 VUW 316\/3-5 R3\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eR3\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e2011–2012\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e47-044-32 R3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eEcotec Plus 831 VUW 316\/3-5 R5\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eR5\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e2013\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e47-044-32 R5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eEcotec Plus 837 VUW 376\/3-5 R1\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eR1\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e2006–2011\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e47-044-33 R1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eEcotec Plus 837 VUW 376\/3-5 R3\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eR3\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e2011–2012\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e47-044-33 R3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Vaillant part number 178973 — direct OEM replacement for Ecotec Plus DHW circuit\u003c\/li\u003e\n\u003cli\u003e12-plate design for fast and efficient heat exchange to the domestic hot water supply\u003c\/li\u003e\n\u003cli\u003eProfessionally refurbished: cleaned, tested, and performance-verified\u003c\/li\u003e\n\u003cli\u003eCompatible with Vaillant Ecotec Plus 824, 831, and 837 model variants (2005–2013)\u003c\/li\u003e\n\u003cli\u003e12-month warranty included\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Choose This Refurbished Unit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eReplacing a worn heat exchanger with this refurbished 178973 unit restores optimal DHW delivery and helps improve overall boiler efficiency. Because every unit is cleaned and performance-tested to original Vaillant standards, you benefit from genuine reliability without the premium price of a new component. It is a smart, cost-effective repair option that extends the life of your Vaillant Ecotec Plus boiler.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDelivery \u0026amp; Returns\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOrders placed before \u003cstrong\u003e1:00 PM\u003c\/strong\u003e are dispatched the same working day, with standard and next-day delivery available at checkout. Returns accepted within \u003cstrong\u003e30 days\u003c\/strong\u003e if unused and in original packaging.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Always verify that part number \u003cstrong\u003e178973\u003c\/strong\u003e matches your existing unit before ordering. Installation must be carried out by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e.\u003c\/p\u003e","brand":"Vaillant","offers":[{"title":"Refurbished","offer_id":47948013207717,"sku":"PLA-2901-A-BC","price":29.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0768\/1690\/8453\/files\/Frame319.png?v=1782985488","url":"https:\/\/ephsuppliers.com\/products\/vaillant-ecotec-plus-831-12-plate-heat-exchanger-refurbished-178973","provider":"Elite Plumbing \u0026 Heating Suppliers Ltd","version":"1.0","type":"link"}