We are currently experiencing unprecedented volumes of enquiries and it’s taking us a little longer than usual to respond to you. Please be assured that we will respond as quickly as possible. We thank you for your patience and understanding but would kindly ask that you do not send multiple contacts and allow us the time to respond to your query via email or online chat. Due to the situation with COVID-19 there may be some products with longer delivery times. Find out more here


Product was successfully added to your basket.

Star Star Star Star Star
Share this product
  • Name
  • Your Email Address
  • Recipient Name
  • Recipient Email Address
  • Message
Successfully added to your basket
Heatrae Megaflo Eco 250DDDD 250 Litre Direct Unvented Cylinder

Heatrae Megaflo Eco 250DDDD 250 Litre Direct Unvented Cylinder

New Merchandise Created with Sketch.
Item Code: 178564
Expected Delivery:  2 - 3 working days
help and info
Need Help?  0800 181 4488
Ex. VAT £1,152.16 Inc VAT

Additional Information

Brand Heatrae
Lead Time 2 - 3 working days
Capacity (litres) 250 - 299
Heating type Direct
Immersion 4 x 3kw
Water supply Unvented
Height (mm) 1738
Width (mm) 579
Depth 579
Warranty Lifetime
Manufacturer Part No: 95050477
Diameter N/A


Megaflo 250DDDD Direct Unvented Cylinder

The Megaflo Eco 250DDDD Unvented Cylinder works as part of an Direct system to store up to 250 litres of hot water. It is ideally suited for 4-5 bedroom properties with 3 baths and showers.

As an unvented cylinder it provides a powerful hot water performance by using your properties mains water pressure.

Made from stainless steel, the HeatRae Megaflo Eco 250 litre model is built to last and even comes with a fabulous life time warranty.

With fantastic levels of heat and water retention, the HeatRae Megaflo Eco 250DDDD model has been built with efficiency in mind and is able to handle up to 15 bars of pressure, up to 5 times more than standard operating pressure levels.



  • Height: 1738mm
  • Diameter: 579mm


  • Capacity: 250 litres 
  • Element rating at 240V: 4x3
  • Coil rating: N/A
  • Weight (when empty): 50kg
  • Weight (when full): 300kg

Key features of MegaFlo Eco 250DDDD

  • Resistant duplex stainless steel casing  - can handle pressures up to 15 bar
  • Coil-in-coil' heat exchanger
  • Insulated outer casing -  increased heating efficiency & pressure relief
  • Unique floating baffle system allows water expansion
  • No anode -  Removes need to replace or maintain
  • Easy to install
  • Immersion heater design increases levels of hot water
  • Titanium immersion heater
  • Reduction in levels of cold water mixing with hot water
  • Enjoy flowrates up to 20% higher than usual due to the Water inlet controls
  • Improved performance at low pressures down to 1 bar
  • Lifetime manufacturer warranty.
  • Manufactured in UK.

Whats in the Box:

  • 1 x  Megaflo Eco 1250DDDD Direct Unvented Cylinder
  • Factory fitted immersion heater and thermal controls
  • Titanium elements
  • Cold water inlet control kit: 0.3MPa (3 bar) pressure reducing valve, 0.8MPa (8 bar) pressure relief valve (BS EN 1567, BS EN 1491 EN 13959) 1/4 turn isolating valve, line strainer, non-return valve, drain valve with hose connection, required nuts and olives
  • Factory fitted temperature and pressure relief valve set at 90 degrees / 1 MPa (10 bars) (BS EN 1490)
  • T&P valve insulation kit
  • 15/22mm Tundish
Order your HeatRae Megaflo Eco 250DDDD cylinder from Direct Heating Supplies for speedy delivery and a fantastic low price.

Direct Cylinders

Note: This model is a Direct Cylinder and most commonly used to heat hot water only via electric immersion without the need of a separate boiler.

We strongly recommend that customers looking to purchase a hot water cylinder double check with their installer first to ensure it is the correct version needed for the installation. The return incorrectly purchased hot water cylinders may involve a restocking fee and expensive carriage charges - for further information or advice please contact us.