Heat pump cylinder with bespoke flexibility

The ECOflow copper unvented heat pump hot water cylinder range provides fantastic benefits the most important of all is ensuring maximum efficiency from your heat pump. The use of copper allows the most efficient heat transfer not only in standard units but also bespoke units, tailored to your size and requirements.

The ECOflow range is built to deliver superior mains pressure simultaneously for showers, sinks and wash hand basins. Since its introduction in 1993, we have developed our unvented cylinder range, concentrating on ease of installation, reliability and a reduction in maintenance.

The bespoke design flexibility of the ECOflow product range overcomes the restrictions of stainless steel alternatives. With a wide range of diameters available to choose from, and the ability to adjust the tapping positions to suit the installation, it has become the perfect choice for installers.

Designed to maximise the performance of heat pumps, the ECOflow copper hot water cylinder comes pre-fitted with our high performance double or triple pass finned copper coil to maximise heat transfer, provide higher flow rates and reduce pressure drop from the heat pump.

Our Tank On Tank unit, the first introduced in the UK, combines a buffer vessel situated below the ECOflow cylinder. Where a buffer vessel is required on the system, the unit has only one footprint.

Our operations manager, David Stewart, talks through the fantastic benefits of our ECOflow cylinder range.

Is the ECOflow not suitable for your installation? Click here to see our alternative unvented cylinder ranges;

  • POWERflow bespoke designed unvented cylinders with direct, indirect and solar thermal options
  • STEELflow stainless steel cylinder solutions

ECOflow has been developed to meet the growing demand for Heat Pump compatible hot water cylinders and offers:

  • Unique bespoke design flexibility to provide an unvented solution to suit any installation requirement
  • Slimline models starting from 400mm diameter
  • Heat Pump and Heat Pump Solar models
  • High heat transfer double or triple pass finned copper coil, maximising heat pump efficiency and reducing running costs
  • Standard cylinder or tank on tank with integrated buffer store
  • Suitable for all models of air source and ground source heat pumps
  • Compression fittings as standard for ease of installation
  • Proven reliability with 25 year guarantee
  • Available with white case and high density pouring foam insulation or spray foam insulation (50mm or 100mm)

Many heat pump cylinder manufacturers are now insisting on the use of copper cylinders with their products, due to the improved performance copper offers.

  • Cheaper running costs
  • Copper’s thermal conductivity rating is over 15 times greater than that of stainless steel
  • High efficiency finned copper coils, provide one of the most effective heat transfer processes on the market
  • Copper has unrivalled bacteria killing properties, even at the lower temperatures achieved by heat pump sources
  • Copper is 100% recyclable
  • An optional integrated buffer vessel (sits below the cylinder offering a small footprint ideal for those who have limited space to work with).
  • Wide range of capacities and sizes
  • Pre-plumbed option
  • Extra Coils – Solar, Boiler etc
  • Vented Option
  • Up to 100mm Lagging – Improved Sap Ratings
  • Commercial Units
1 bedroom + bath/shower1501125 x 550
2 bedroom + bath/shower1801325 x 550
3 bedroom + bath/shower2101525 x 550
4 bedroom + bath/shower2501525 x 600
Larger Properties300+1825 x 600

Dimensions include insulation

If you are looking to squeeze your hot water cylinder into a tight space, we also offer Slimline versions of our Unvented cylinders.

Typically measuring, an industry leading, 450mm in diameter including the insulation, these slimmer models are manufactured to the same standards and designs as our ECOflow units and come with the full 25 year guarantee.

However thanks to our flexible approach to manufacturing and our use of copper, we can manufacture cylinders as small as 400mm.

We can even place the connections in the best location for the installation, making further savings on installation time and costs. 

To find out more about our ECOflow heat pump cylinders and to discuss sizing and dimensions, contact our technical sales team now.

In addition to our unvented hot water cylinder standard sizes we offer a bespoke service creating tailored units so you don’t need to compromise – to discuss your options just contact us on 01592 611123 or contact us online.

Product Enquiry

Enter your details below...

CPD Enquiry

Enter your details below...

Register Your Product

Please enter your details below to register your product.

Product Details
Homeowner Details
Installer Details
For more information on the warranty details, click here

Installation Service Quote

Please enter your details below to request a quotation for our installation service.

Technical Assistance Form

If you require Technical Assistance from our online cylinder site, please fill in the form below.

Product Request Form

If you cannot find a product or part in our store you can request it below and we will try to source it direct for you.

Join The Club!

Claim 10% off
mcdonald water storage
spare parts

To celebrate the launch of our online store with genuine McDonald Water Storage spares and free next day delivery (orders over £50), we want you to enjoy a 10% discount on your first order.
To claim your offer simply enter your email address below

By Entering your email address and pressing send, you agree to be happy to receive offers and updates from McDonald Water Storage.