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Heatrae Sadia Megaflo Eco 300SI Unvented Indirect Solar Cylinder - 300 Litres

Heatrae Sadia Megaflo Eco 300SI Unvented Indirect Solar Cylinder - 300 Litres

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Item Code: 178523
Expected Delivery:  2 - 3 working days
help and info
Need Help?  0800 181 4488
Ex. VAT £1,846.42 Inc VAT

Additional Information

Brand Heatrae
Lead Time 2 - 3 working days
Capacity (litres) 300
Heating type Indirect
Immersion 1 x 3kw
Water supply Unvented
Height (mm) 2053
Width (mm) 579
Depth 579
Warranty Lifetime
Manufacturer Part No: 95050517
Diameter N/A


Heatrae Sadia Megaflo Eco 300SI Unvented Indirect Solar Cylinder - 300 Litres

Heatrae are a market leader in central heating cylinders and continue to pave the way with their new superior Megaflow Eco Solar range. The Heatrae Sadia Megaflo Eco 300SI Unvented Indirect Solar Cylinder - 300 Litres incorporates a special solar coil built within it at the base of the cylinder that's designed to produce maximum heat input and efficiency thus lowering running costs and reducing your energy bills.

The Heatrae Sadia Megaflo Eco 300SI Unvented Indirect Solar Cylinder - 300 Litres is manufactured from Duplex stainless steel for maximum strength and corrosion resistance giving it a long life span, and with its lifetime warranty you can be reassured you'll always have an operational cylinder. It’s insulated using high-performance polyurethane foam between the inner vessel and outer casing for optimum heat insulation. As an unvented cylinder it provides powerful hot water performance by using your properties mains water pressure.

This Heatrae Sadia Megaflo Eco 300SI Unvented Indirect Solar Cylinder - 300 Litres operates as part of a indirect system to store up to 300 litres of hot water. It is idealy suited for 4/5 bedroom properties with 2 baths or showers.

Heatrae Sadia Megaflo Eco Solar Size Chart


  • Height: 2053mm
  • Diameter: 579mm


  • Capacity: 300 litres 
  • Immersion heater rating (Kw): 1x3
  • Coil Heat Transfer: 15 litres per minunte, 24.5Kw
  • Weight (when empty): 66.5kg
  • Weight (when full): 366.5kg

Key features

  • Lightweight construction with strong feet for additional stability.
  • Compatible with Megaflo Solar Thermal packages and with a wide range of other UK solar systems.
  • Drain valve supplied loose with every cylinder.
  • Factory-fitted control pockets suitable for insertion of solar controller and temperature control probe.
  • Improved performance at low pressures down to 1 bar
  • Cylinder manufactured from top grade Duplex stainless steel – specially selected for its high strength and resistance to stress and crevice corrosion, pressure tested to 15 bar. Totally insulated with 100% CFC-free (ODP zero) polyurethane to minimise heat loss (60mm thick).
  • Patented cold water inlet diffuser minimises mixing of cold and hot water.
  • Choice of direct or indirect auxiliary heat input.
  • Specially designed solar coil for maximum solar efficiency.
  • Remote expansion vessel.
  • High flow rates for improved hot water delivery.
  • Equally suited for new build or refurbishment projects.
  • No anode - eliminates costly anode maintenance.
  • Unique 'L-shaped' long-life Superloy immersion heater reaches deeper into the tank giving more hot water.
  • Lower running costs and reduced energy bills Environmentally friendly – reduced carbon emissions.
  • Insulated casing for the temperature and pressure relief valve to minimise heat loss.
  • Fully indemnified design service.
  • Lifetime cylinder guarantee with on-site service support.
  • Cylinder capacities sized to ensure sufficient hot water on days of limited solar gain, offering the correct choice when specifying for Building Regulations.
  • High performance 'coil-in-coil' heat exchanger.
  • Exceeds CheSS* Best Practice for recovery times and insulation and complies with future European Energy Using Products Directive.


  • 22mm compression / ¾" BSP hot water outlet.
  • 22mm compression / ¾" BSP cold water inlet.
  • Integral feet.
  • 22mm compression / ¾" BSP primary flow (solar).
  • 22mm compression / ¾" BSP primary return (solar).
  • Patented cold water diffuser.
  • White plastic-coated, corrosion-proofed outer case with grey moulded top and bottom covers and electrical housings for neat and attractive finish.
  • Grommets on pipework for professional finish.
  • High performance long-life 3kW Superloy 825 immersion heater with integral thermostat and thermal cut-out.
  • Titanium elements as standard on all direct models.
  • Wiring centre for indirect controls.
  • Additional solar probe pocket.
  • Drain valve.
  • Remote expansion vessel.

Order your Heatrae Sadia Megaflo Eco 300SI Unvented Indirect Solar Cylinder - 300 Litres from Direct Heating Supplies for speedy delivery and a fantastic low price.