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Another powerful performance

Megaflo Eco Plus Solar balances the same benefits of our Megaflo Eco Solar unvented cylinders with the significantly higher performance levels of our Megaflo Eco Plus calorifiers. Ensuring an abundant and powerful supply of hot water at all outlets in either large domestic or small and medium sized commercial properties, our Megaflo Eco Plus Solar calorifiers are available in sizes from 400 Litres up to 1000 Litres stored capacity.

Running costs are kept low by harnessing the sun's energy to provide the hot water. This is achieved in conjunction with a separately available solar thermal package, which includes solar thermal collector flat plate panels or evacuated tubes.

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  • BIM

  • High performance twin coil heat exchanger
  • Unique 'L' shaped immersion heater maximises the volume of hot water available when heated electrically
  • Large bore tappings and low resistance safety valves for outstanding high flow rates
  • External expansion vessel
  • 100mm of CFC / HCFC-free injected foam for optimum heat retention and energy efficiency
  • 1 x 3kW heating element as standard on 400, 500 and 570 models
  • 1 x 6kW heating element as standard on 800 and 1000 models


Product  Height  Width  Weight    Capacity  Solar coil surface area  ErP rating  Order code 
  mm  mm  (empty) kg  (full) kg  litres  m2 
400si  1502  861  83  483  400 2 B 95:050:725
500si  1802  861  100  600  500  C 95:050:726
570si  1997  861  112  682  570  C 95:050:727
800si  1914  1019  217  1017  800  C 95:050:728
1000si  2327  1019  225  1225  1000 C 95:050:729


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