{"product_id":"heatrae-sadia-megaflo-eco-direct-unvented-cylinder-triple-immersion-210ddd-250ddd-300ddd-eco-dir","title":"Heatrae Sadia Megaflo Eco Direct Unvented Cylinder Triple Immersion – 210DDD \/ 250DDD \/ 300DDD ECO DIR","description":"\u003cdiv style=\"font-family:Arial,Helvetica,sans-serif;font-size:16px;color:#1a1a1a;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n\n  \u003cp style=\"font-size:17px;color:#333;margin:0 0 20px;\"\u003e\n    The \u003cstrong\u003eHeatrae Sadia Megaflo Eco Direct DDD\u003c\/strong\u003e range provides the power and flexibility of \u003cstrong\u003ethree 3 kW titanium immersion heaters (9 kW total)\u003c\/strong\u003e in one unvented cylinder — designed for large domestic properties, high-demand applications, and installations where maximum electric hot water capacity is required. Available in \u003cstrong\u003e210, 250, and 300 litres\u003c\/strong\u003e, these are \u003cstrong\u003edirectly electrically heated\u003c\/strong\u003e cylinders with no boiler connection; they store water at \u003cstrong\u003emains pressure\u003c\/strong\u003e and deliver \u003cstrong\u003eup to 76 litres per minute at 3 bar\u003c\/strong\u003e. Built from \u003cstrong\u003ehigh-grade duplex stainless steel\u003c\/strong\u003e with a \u003cstrong\u003elifetime inner-tank guarantee\u003c\/strong\u003e and full safety kit supplied.\n  \u003c\/p\u003e\n\n  \u003c!-- Stat strip --\u003e\n  \u003cdiv style=\"display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px;\"\u003e\n    \u003cdiv style=\"flex:1;min-width:115px;background:#008377CF;color:#fff;border-radius:6px;padding:16px 12px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:24px;font-weight:700;\"\u003e9 kW\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003e3 × 3 kW elements\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:115px;background:#008377CF;color:#fff;border-radius:6px;padding:16px 12px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:24px;font-weight:700;\"\u003e210–300 L\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eCapacity range\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:115px;background:#008377CF;color:#fff;border-radius:6px;padding:16px 12px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:24px;font-weight:700;\"\u003e68–97 min\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eFull heat-up (9 kW)\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:115px;background:#008377CF;color:#fff;border-radius:6px;padding:16px 12px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:24px;font-weight:700;\"\u003e76 l\/min\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eMax flow at 3 bar\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:115px;background:#008377CF;color:#fff;border-radius:6px;padding:16px 12px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:24px;font-weight:700;\"\u003eLifetime\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px;margin-top:4px;\"\u003eInner-tank guarantee\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- G3 callout --\u003e\n  \u003cdiv style=\"background:#fff5f5;border-left:4px solid #e53e3e;padding:14px 18px;border-radius:4px;margin-bottom:20px;\"\u003e\n    \u003cstrong style=\"color:#c53030;\"\u003e⚠ G3 Competent Person \u0026amp; Qualified Electrician Required\u003c\/strong\u003e\u003cbr\u003e\n    Megaflo Eco Direct DDD cylinders must be installed and commissioned by a \u003cstrong\u003eG3 accredited competent person\u003c\/strong\u003e. All electrical connections — including the three separate immersion heater circuits at up to \u003cstrong\u003e9 kW total load\u003c\/strong\u003e — must be made by a \u003cstrong\u003equalified electrician\u003c\/strong\u003e to current IET Wiring Regulations. Each immersion requires a dedicated fused spur or circuit breaker.\n  \u003c\/div\u003e\n\n  \u003c!-- Direct-only note --\u003e\n  \u003cdiv style=\"background:#e6f4f3;border-left:4px solid #008377CF;padding:14px 18px;border-radius:4px;margin-bottom:20px;\"\u003e\n    \u003cstrong style=\"color:#005c54;\"\u003eℹ Direct (electrically heated) — no boiler connection\u003c\/strong\u003e\u003cbr\u003e\n    DDD models are heated \u003cstrong\u003eexclusively by their three 3 kW titanium immersion heaters\u003c\/strong\u003e. There is no boiler coil. These cylinders are ideal for \u003cstrong\u003eall-electric homes, properties without gas, off-peak Economy 7\/10 installations\u003c\/strong\u003e, and applications demanding high electric heating capacity. For boiler-fed cylinders, see the \u003cstrong\u003eMegaflo Eco Indirect\u003c\/strong\u003e range.\n  \u003c\/div\u003e\n\n  \u003c!-- DDD advantage --\u003e\n  \u003cdiv style=\"background:#fff8e6;border-left:4px solid #d69e2e;padding:14px 18px;border-radius:4px;margin-bottom:28px;\"\u003e\n    \u003cstrong style=\"color:#744210;\"\u003eℹ Why choose DDD over DD?\u003c\/strong\u003e\u003cbr\u003e\n    The DD models (2 × 3 kW = 6 kW) are the standard choice for most domestic installations. The \u003cstrong\u003eDDD models add a third 3 kW element\u003c\/strong\u003e, giving \u003cstrong\u003e9 kW total\u003c\/strong\u003e for significantly \u003cstrong\u003efaster heat-up times\u003c\/strong\u003e — the 210DDD heats up in 68 minutes vs 102 for the 210DD — and greater flexibility with off-peak tariffs (e.g. running element combinations on different time bands). All three elements can also be wired to different circuits to enable zone-by-zone control.\n  \u003c\/div\u003e\n\n  \u003c!-- Features --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:4px;font-size:15px;font-weight:700;letter-spacing:.5px;margin-bottom:18px;\"\u003eKEY FEATURES\u003c\/div\u003e\n  \u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;margin-bottom:32px;\"\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:18px;\"\u003e\n      \u003cdiv style=\"color:#005c54;font-weight:700;border-bottom:2px solid #008377CF;padding-bottom:6px;margin-bottom:10px;\"\u003eThree Titanium Immersion Heaters — 9 kW Total\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eThree independently controlled \u003cstrong\u003e3 kW titanium immersion heaters\u003c\/strong\u003e give 9 kW of installed electric heating capacity. \u003cstrong\u003eTitanium elements\u003c\/strong\u003e are the highest grade available — engineered for longevity in aggressive, hard, or corrosive water conditions — significantly outlasting standard Incoloy or stainless steel alternatives.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:18px;\"\u003e\n      \u003cdiv style=\"color:#005c54;font-weight:700;border-bottom:2px solid #008377CF;padding-bottom:6px;margin-bottom:10px;\"\u003eFaster Heat-Up vs DD — 33% More Power\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eAt \u003cstrong\u003e9 kW vs 6 kW\u003c\/strong\u003e on the DD models, the DDD range heats up in \u003cstrong\u003e68 min (210DDD), 81 min (250DDD), and 97 min (300DDD)\u003c\/strong\u003e compared to 102, 121, and 146 minutes respectively for the DD equivalents. This \u003cstrong\u003e30–33% faster recovery\u003c\/strong\u003e is critical for high-demand households where the cylinder may be fully drawn down overnight.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:18px;\"\u003e\n      \u003cdiv style=\"color:#005c54;font-weight:700;border-bottom:2px solid #008377CF;padding-bottom:6px;margin-bottom:10px;\"\u003eInternal Expansion — No External Vessel\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eThe \u003cstrong\u003epatented internal floating-baffle system\u003c\/strong\u003e accommodates DHW thermal expansion within the cylinder itself — \u003cstrong\u003eno external expansion vessel required\u003c\/strong\u003e. This keeps the installation neat and compact, eliminating a common point of maintenance and potential failure in the plant room or airing cupboard.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:18px;\"\u003e\n      \u003cdiv style=\"color:#005c54;font-weight:700;border-bottom:2px solid #008377CF;padding-bottom:6px;margin-bottom:10px;\"\u003eDuplex Stainless Steel — Lifetime Guarantee\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eFabricated from \u003cstrong\u003ehigh-grade duplex stainless steel\u003c\/strong\u003e, pressure-tested to 15 bar at the factory — five times the normal operating pressure. Heatrae Sadia back the inner vessel with a \u003cstrong\u003elifetime guarantee\u003c\/strong\u003e for domestic first-owner installations. All other components carry a \u003cstrong\u003e2-year warranty\u003c\/strong\u003e.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:18px;\"\u003e\n      \u003cdiv style=\"color:#005c54;font-weight:700;border-bottom:2px solid #008377CF;padding-bottom:6px;margin-bottom:10px;\"\u003eFlexible Off-Peak Tariff Configuration\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eThree separately controllable elements allow \u003cstrong\u003eflexible Economy 7 \/ Economy 10 or time-of-use tariff configurations\u003c\/strong\u003e: run the lower elements overnight on cheap-rate power to charge the cylinder fully, and use one upper element on a boost timer during the day. This multi-element architecture gives the installer and homeowner \u003cstrong\u003efar greater tariff optimisation\u003c\/strong\u003e than a two-element unit.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:18px;\"\u003e\n      \u003cdiv style=\"color:#005c54;font-weight:700;border-bottom:2px solid #008377CF;padding-bottom:6px;margin-bottom:10px;\"\u003e76 l\/min Mains Pressure — Full Kit Supplied\u003c\/div\u003e\n      \u003cp style=\"margin:0;font-size:15px;\"\u003eAll DDD models deliver \u003cstrong\u003eup to 76 l\/min at 3 bar\u003c\/strong\u003e. Every cylinder ships complete with: \u003cstrong\u003ecold water inlet control kit\u003c\/strong\u003e (3 bar PRV, 8 bar PRV, ¼-turn isolator, strainer, non-return valve, drain cock) · \u003cstrong\u003efactory-fitted 90 °C \/ 10 bar T\u0026amp;P valve\u003c\/strong\u003e · tundish · T\u0026amp;P insulation kit — nothing additional to source for the basic unvented installation.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- Specs --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:4px;font-size:15px;font-weight:700;letter-spacing:.5px;margin-bottom:18px;\"\u003eFULL SPECIFICATIONS — DDD DIRECT VARIANTS\u003c\/div\u003e\n\n  \u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;margin-bottom:24px;\"\u003e\n    \u003cthead\u003e\u003ctr style=\"background:#008377CF;color:#fff;\"\u003e\n      \u003cth style=\"padding:10px 12px;text-align:left;border:1px solid #c8e6e3;\"\u003eParameter\u003c\/th\u003e\n      \u003cth style=\"padding:10px 12px;text-align:center;border:1px solid #c8e6e3;\"\u003eSpecification (all DDD models)\u003c\/th\u003e\n    \u003c\/tr\u003e\u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eInner vessel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #c8e6e3;text-align:center;\"\u003eHigh-grade duplex stainless steel — tested to 15 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eInsulation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #c8e6e3;text-align:center;\"\u003e60 mm CFC\/HCFC-free fire-retardant PU foam (GWP = 3.1)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eImmersion heaters\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #c8e6e3;text-align:center;\"\u003e3 × 3 kW titanium @ 240 V (2.8 kW @ 230 V) — 9 kW total\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eOperating pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #c8e6e3;text-align:center;\"\u003e0.3 MPa (3 bar)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eMax mains supply (to PRV)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #c8e6e3;text-align:center;\"\u003e1.6 MPa (16 bar)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #c8e6e3;\"\u003e\u003cstrong\u003ePressure relief valve\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #c8e6e3;text-align:center;\"\u003e0.8 MPa (8 bar)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eT\u0026amp;P valve\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #c8e6e3;text-align:center;\"\u003e90 °C \/ 1 MPa (10 bar) — factory-fitted\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eConnections\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #c8e6e3;text-align:center;\"\u003e22 mm compression \/ ¾\" BSP\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eMax flow at 3 bar\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #c8e6e3;text-align:center;\"\u003e76 litres\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eMax flow at 1 bar\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #c8e6e3;text-align:center;\"\u003e45 litres\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eDiameter (all models)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #c8e6e3;text-align:center;\"\u003e579 mm (Ø)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eErP class\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #c8e6e3;text-align:center;\"\u003eClass C (all DDD models)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eKiwa certification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #c8e6e3;text-align:center;\"\u003eNo. 1608707\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eGuarantee\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #c8e6e3;text-align:center;\"\u003eLifetime inner tank · 2 years components\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eCountry of manufacture\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #c8e6e3;text-align:center;\"\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ctable style=\"width:100%;border-collapse:collapse;font-size:13px;margin-bottom:24px;\"\u003e\n    \u003cthead\u003e\u003ctr style=\"background:#005c54;color:#fff;\"\u003e\n      \u003cth style=\"padding:9px 10px;text-align:left;border:1px solid #c8e6e3;\"\u003eModel\u003c\/th\u003e\n      \u003cth style=\"padding:9px 10px;text-align:center;border:1px solid #c8e6e3;\"\u003e210DDD\u003c\/th\u003e\n      \u003cth style=\"padding:9px 10px;text-align:center;border:1px solid #c8e6e3;\"\u003e250DDD\u003c\/th\u003e\n      \u003cth style=\"padding:9px 10px;text-align:center;border:1px solid #c8e6e3;\"\u003e300DDD\u003c\/th\u003e\n    \u003c\/tr\u003e\u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eProduct code\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e95050480\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e95050471\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e95050474\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eNominal capacity (L)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e210\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e250\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e300\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eImmersions (No. × kW)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e3 × 3 kW\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e3 × 3 kW\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e3 × 3 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eStorage vol @ 3 bar (L)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e199\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e236\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e283\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eV40 mixed at 40 °C (L)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e241\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e307\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e359\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eErP load profile\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003eL\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003eXL\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003eXL\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eErP water heating efficiency (%)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e37.5\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e37.8\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e37.7\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eHeat-up time (all 9 kW, min)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e68\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e81\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e97\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eStanding heat loss (kWh\/24h)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e1.42\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e1.61\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e1.69\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eAnnual electricity (kWh)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e2,731\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e3,513\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e4,476\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eWeight empty (kg)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e39\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e47\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e57\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eWeight full (kg)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e237\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e282\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e339\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003c!-- Dimensions --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:4px;font-size:15px;font-weight:700;letter-spacing:.5px;margin-bottom:18px;\"\u003eDIMENSIONS (mm)\u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;font-size:13px;margin-bottom:32px;\"\u003e\n    \u003cthead\u003e\u003ctr style=\"background:#005c54;color:#fff;\"\u003e\n      \u003cth style=\"padding:9px 10px;text-align:left;border:1px solid #c8e6e3;\"\u003eDimension\u003c\/th\u003e\n      \u003cth style=\"padding:9px 10px;text-align:center;border:1px solid #c8e6e3;\"\u003e210DDD\u003c\/th\u003e\n      \u003cth style=\"padding:9px 10px;text-align:center;border:1px solid #c8e6e3;\"\u003e250DDD\u003c\/th\u003e\n      \u003cth style=\"padding:9px 10px;text-align:center;border:1px solid #c8e6e3;\"\u003e300DDD\u003c\/th\u003e\n    \u003c\/tr\u003e\u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eA — DHW inlet\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e414\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e414\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e414\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eB — Cable entry lower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e275\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e275\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e275\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eC — Cable entry upper\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e801\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e1009\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e1313\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eD — T\u0026amp;P relief valve\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e1095\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e1323\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e1574\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eE — Height\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e1486\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e1738\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e2053\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eF — Depth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e600\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e600\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e600\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eG — Width \/ Ø\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e579\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e579\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #c8e6e3;text-align:center;\"\u003e579\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003c!-- FAQ --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:4px;font-size:15px;font-weight:700;letter-spacing:.5px;margin-bottom:18px;\"\u003eFREQUENTLY ASKED QUESTIONS\u003c\/div\u003e\n\n  \u003cdetails style=\"border:1px solid #c8e6e3;border-radius:4px;margin-bottom:10px;overflow:hidden;\"\u003e\n    \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 16px;cursor:pointer;font-weight:600;list-style:none;\"\u003eWhen should I choose DDD over DD — or DDDD?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:14px 18px;background:#f0faf9;font-size:15px;\"\u003eThe \u003cstrong\u003eDD models (2 × 3 kW)\u003c\/strong\u003e are standard for most domestic all-electric installations. Choose \u003cstrong\u003eDDD (3 × 3 kW)\u003c\/strong\u003e when you need significantly faster recovery times — the 210DDD heats in 68 min vs 102 min for the 210DD — or when you want to split elements across off-peak tariff bands for more nuanced energy management. Choose \u003cstrong\u003eDDDD (4 × 3 kW)\u003c\/strong\u003e for the fastest possible electric heat-up in large cylinders, or where maximum flexibility across multiple time-of-use periods is needed. All three have identical cylinder bodies — only the element count differs.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border:1px solid #c8e6e3;border-radius:4px;margin-bottom:10px;overflow:hidden;\"\u003e\n    \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 16px;cursor:pointer;font-weight:600;list-style:none;\"\u003eCan the three immersions be wired to different circuits?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:14px 18px;background:#f0faf9;font-size:15px;\"\u003eYes — the three elements can be wired independently to separate circuits, time switches, or smart controls. A typical Economy 7 configuration uses the \u003cstrong\u003elower element on the overnight off-peak circuit\u003c\/strong\u003e and the \u003cstrong\u003eupper element(s) on a boost timer or smart controller\u003c\/strong\u003e for daytime top-up. All three elements can also be run simultaneously via a controller for maximum heat-up speed. Your electrician and G3 installer will agree the wiring scheme.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border:1px solid #c8e6e3;border-radius:4px;margin-bottom:10px;overflow:hidden;\"\u003e\n    \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 16px;cursor:pointer;font-weight:600;list-style:none;\"\u003eWhat is the Megaflo Eco's internal expansion system?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:14px 18px;background:#f0faf9;font-size:15px;\"\u003eThe \u003cstrong\u003epatented internal floating-baffle air-gap system\u003c\/strong\u003e accommodates the volume change of water as it heats, entirely within the cylinder body. This means \u003cstrong\u003eno external expansion vessel is needed on the DHW circuit\u003c\/strong\u003e — reducing installation complexity, saving space, and eliminating a potential maintenance item. It is one of the key advantages of the Megaflo design over competitor cylinders that require an external expansion vessel.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border:1px solid #c8e6e3;border-radius:4px;margin-bottom:10px;overflow:hidden;\"\u003e\n    \u003csummary style=\"background:#008377CF;color:#fff;padding:12px 16px;cursor:pointer;font-weight:600;list-style:none;\"\u003eWhat is the guarantee on the Megaflo Eco DDD?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:14px 18px;background:#f0faf9;font-size:15px;\"\u003eHeatrae Sadia provide a \u003cstrong\u003elifetime guarantee on the inner duplex stainless steel vessel\u003c\/strong\u003e for domestic first-owner installations. This transfers as a 30-year warranty to subsequent owners. \u003cstrong\u003eAll other components\u003c\/strong\u003e — immersion heaters, valves, controls — carry a \u003cstrong\u003e2-year warranty\u003c\/strong\u003e. Warranty validity requires correct G3 installation, annual servicing, and a completed Benchmark commissioning checklist.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n\u003c\/div\u003e","brand":"Heatrae Sadia","offers":[{"title":"210L","offer_id":64747942478173,"sku":"95050480","price":1595.0,"currency_code":"GBP","in_stock":true},{"title":"250L","offer_id":64747942510941,"sku":"95050471","price":1770.0,"currency_code":"GBP","in_stock":true},{"title":"300L","offer_id":64747942543709,"sku":"95050474","price":1900.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/HeatraeSadiaMegafloEcoDirectUnventedHotWaterCylinder.webp?v=1777654796","url":"https:\/\/qualityheating.co.uk\/products\/heatrae-sadia-megaflo-eco-direct-unvented-cylinder-triple-immersion-210ddd-250ddd-300ddd-eco-dir","provider":"AIZO Quality Heating","version":"1.0","type":"link"}