{"product_id":"viessmann-vitodens-025-w-28kw-bpkb-combi-boiler-7098279","title":"Viessmann Vitodens 025-W 28kW BPKB Combi Boiler | 7098279","description":"\u003c!-- SEO Product Name: Viessmann Vitodens 025-W 28kW BPKB Combi Boiler | 7098279 --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eViessmann Vitodens 025-W\u003c\/strong\u003e is a compact, pre-commissioned gas condensing combi boiler built for living areas with limited space, combining the same \u003cstrong\u003eInox-Radial stainless steel heat exchanger\u003c\/strong\u003e and \u003cstrong\u003eMatriX-Plus burner\u003c\/strong\u003e technology found across the wider Vitodens range.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eWith no side clearance required and all connections accessible from the front, the 28kW model is designed to be \u003cstrong\u003equick and straightforward to install\u003c\/strong\u003e — Viessmann states that only two button presses are needed to complete commissioning on a pre-commissioned unit.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px -4px 24px -4px;\"\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e28kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eCombi output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e92%\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eErP space heating efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003eClass A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eEnergy efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e1:5\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eModulation range\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e12 l\/min\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eDHW flow rate (ΔT 35°C)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; min-width:120px; background:#F7FAFA; border:1px solid #D9EDEA; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; color:#00625D;\"\u003e34kg\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#5A5A5A; margin-top:4px; line-height:1.3;\"\u003eWeight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:4px; padding:14px 16px; margin:0 0 20px 0; display:flex; align-items:flex-start; gap:10px;\"\u003e\n\u003cspan style=\"font-size:18px; line-height:1;\"\u003e🛈\u003c\/span\u003e\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.55;\"\u003e\n\u003cstrong style=\"color:#E0942A;\"\u003ePlease Note:\u003c\/strong\u003e This boiler must be connected using the Viessmann 60\/100mm concentric flue system, tested and CE-designated as one structural unit with the boiler in accordance with DVGW-VP 113. Only this flue system may be used.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:4px; padding:14px 16px; margin:0 0 20px 0; display:flex; align-items:flex-start; gap:10px;\"\u003e\n\u003cspan style=\"font-size:18px; line-height:1;\"\u003eℹ\u003c\/span\u003e\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.55;\"\u003e\n\u003cstrong style=\"color:#008377CF;\"\u003eGood to Know:\u003c\/strong\u003e Registering the installation on the Viessmann installer portal (VPlus) within 30 days extends the standard 2-year warranty to \u003cstrong\u003e5 years\u003c\/strong\u003e, alongside a 10-year warranty on the Inox-Radial heat exchanger.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 -6px 24px -6px;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003ePre-commissioned for fast installation\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eOnly \u003cstrong\u003etwo button pushes\u003c\/strong\u003e are needed to complete commissioning, minimising time on site.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eNo side clearance required\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eAll components and connections are accessible \u003cstrong\u003efrom the front\u003c\/strong\u003e, making it well suited to tight cupboard installations.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eInox-Radial stainless steel heat exchanger\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eProvides \u003cstrong\u003ehigh corrosion resistance\u003c\/strong\u003e and a long operational life, backed by a 10-year heat exchanger warranty.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eMatriX-Plus burner system\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eEnsures \u003cstrong\u003econsistently clean combustion\u003c\/strong\u003e across a 1:5 modulation range.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eCompact 700 x 400 x 300mm size\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eOne of the \u003cstrong\u003esmallest wall-mounted boilers\u003c\/strong\u003e in its output class, ideal for apartments and modernisation projects.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#FFFFFF; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:6px;\"\u003e\n\u003cdiv style=\"font-size:15.5px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eLow operating noise\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px; color:#3A3A3A; line-height:1.55;\"\u003eRated at \u003cstrong\u003e51 dB(A)\u003c\/strong\u003e for the 28kW model, keeping the boiler unobtrusive in living spaces.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:19px; font-weight:700; color:#00625D; margin:32px 0 14px 0; padding-bottom:8px; border-bottom:2px solid #008377CF;\"\u003eSpecification\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003ePerformance\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eBoiler type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eGas condensing combi (Type BPKB-28)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eRated heat output (50\/30°C)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e5.0 – 25.0 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eRated heat output (80\/60°C)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e4.5 – 22.7 kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eCombi DHW output\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e28kW\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eDHW draw-off rate (ΔT 35°C)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e12 l\/min\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eErP space heating efficiency\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e92%\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eEnergy efficiency class\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003eA\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eModulation range\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e1:5\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003eDimensions \u0026amp; Connections\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eHeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e700mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eWidth\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e400mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eDepth\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e300mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eWeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e34kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eFlue gas connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e60mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eVentilation air connection\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e100mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#FFFFFF; font-weight:700; font-size:13.5px; letter-spacing:.04em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003eWarranty\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-top:none; border-radius:0 0 6px 6px; overflow:hidden; margin-bottom:6px;\"\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eStandard warranty\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e2 years\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F7FAFA; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eRegistered warranty (VPlus)\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e5 years\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; font-size:14px; color:#333333;\"\u003eHeat exchanger warranty\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; font-size:14px; color:#222222;\"\u003e10 years\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eHow is the 28kW model different from the 24kW Vitodens 025-W?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eBoth share the same footprint, control system and heat exchanger technology; the 28kW model simply delivers a higher rated heat output (up to 25kW at 50\/30°C) and DHW output, suited to slightly larger properties or higher simultaneous hot water demand.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eIs the Vitodens 025-W suitable for a large family home?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eIt's positioned by Viessmann as a compact solution for smaller living areas, apartments and modernisation projects — for larger properties with higher heat loss, the Vitodens 050-W or 100-W ranges offer higher output options.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eDoes registering the boiler extend the warranty?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eYes, registering the installation on the Viessmann installer portal (VPlus) within 30 days extends the standard 2-year warranty to 5 years, with a 10-year warranty on the heat exchanger.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #D9EDEA; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"padding:13px 16px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat flue system does the Vitodens 025-W use?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:13px 16px 15px 16px; font-size:14.5px; color:#3A3A3A; line-height:1.6; border-top:1px solid #D9EDEA; background:#FFFFFF;\"\u003eIt uses the same 60\/100mm concentric flue system as the rest of the Vitodens wall-mounted range, CE-designated as one structural unit with the boiler.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":65942132752733,"sku":"7098279","price":930.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/ViessmannVitodens025-WBPKBCombiBoiler7098278.jpg?v=1789625774","url":"https:\/\/qualityheating.co.uk\/products\/viessmann-vitodens-025-w-28kw-bpkb-combi-boiler-7098279","provider":"AIZO Quality Heating","version":"1.0","type":"link"}