Megaflo HE Unvented Water Heating

Megaflo HE units are designed and manufactured to a very high quality using the latest manufacturing techniques. They boast numerous innovative features designed to ensure high levels of operating efficiency, including:


  • High performance ‘coil in coil’ heat exchanger Exceeds CHeSS*
  • Best Practice for recovery times and insulation
  • Improved insulation for maximum heat retention
  • New water inlet controls increase flow rates by up to 35%
  • Improved performance at low pressures down to 1 bar
  • Installer friendly design


Call our GAS SAFE engineers and Plumbers on:

FREEPHONE: 0800 0 74 76 78

In addition to the advantages of unvented systems, Megaflo HE. offers a number of features that place it well ahead of the competition in terms of performance, quality and reliability, including:

  • Powerful mains pressure showering
  • Faster filling baths
  • Constructed in Duplex stainless steel for maximum strength – pressure tested to 15 bar
  • Patented internal floating baffle system to accommodate water expansion
  • No anode – eliminates costly anode maintenance
  • CFC/HCFC-free (ODP zero) foam injected insulation for maximum heat retention.
  • Unique ‘L-shaped’ long-life Superloy immersion heater reaches deeper into the tank giving more hot water.
  • Smart and attractive appliance-like finish designed with the home owner in mind.
  • Patented cold water inlet diffuser minimises mixing of cold and hot water
  • 25 year transferable cylinder guarantee**

So, whether it’s for the home environment, the workplace or demanding applications such as sports and health club shower rooms, there’s a model to suit your needs.

*Energy Efficiency Partnership: Central Heating System Specifications.

**Guarantee applies to UK installations only.

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South Thames Gas
62 Railton Road
Herne Hill
SE24 0LF

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