Megaflo Eco Indirect Unvented Hot Water Cylinder – 70i / 125i / 145i / 170i / 210i / 250i / 300i

The Megaflo Eco Indirect's unique coil-in-coil heat exchanger maximises contact area between primary and stored water, achieving full heat-up in as little as 17 minutes (70i at 15 l/min primary flow, 80 °C) and 70% draw-off recovery in 10–27 minutes across the range — outperforming most competitors at the same primary flow rate.

The patented internal floating-baffle air-gap system accommodates domestic hot water thermal expansion within the cylinder itself — no external DHW expansion vessel is required, simplifying installation and reducing pipework. Note: the primary heating circuit still requires its own expansion vessel if sealed.

Fabricated from high-grade duplex stainless steel, pressure-tested to 15 bar, with all titanium immersion elements. Heatrae Sadia back the inner vessel with a lifetime guarantee for domestic first-owner installations, transferring as a 30-year warranty. All components carry a 2-year warranty.

Fed directly from the cold-water mains at 3 bar operating pressure, the Megaflo Eco Indirect delivers up to 76 litres per minute — powerful simultaneous hot water to multiple outlets. No shower pumps, no loft tanks, and consistent balanced pressure on both hot and cold supplies.

60 mm of CFC/HCFC-free fire-retardant polyurethane foam (GWP = 3.1) delivers excellent standing heat-loss performance across the range (0.91–1.69 kWh/24 h). All models achieve ErP Energy Efficiency Class B (70i–210i) or Class C (250i–300i), complying with Building Regulations Part L.

Every model includes: single 3 kW titanium backup immersion · complete cold water inlet control kit (3 bar PRV, 8 bar pressure relief valve, ¼-turn isolator, line strainer, non-return valve, drain cock) · factory-fitted 90 °C / 10 bar T&P valve · tundish · T&P insulation kit · additional thermostat & thermal cut-out · wiring centre · 22 mm 2-port motorised valve.