When RSP Consultant Engineers were designing the plumbing and heating systems on this prestigious Passivhaus project, they required a hot water cylinder which was capable of meeting the requirements of the passive house planning project. They approached us at McDonald Water Storage and we designed and manufactured the custom-made POWERflow unvented cylinders to their exact requirements.
The brand new sustainable living housing development Dundashill worked alongside construction and manufacturing company CCG (Scotland) Ltd to find the perfect solution in the form of our POWERflow system.
They ordered a mixture of 150 & 180 litre bespoke POWERflow units which comprised of 22mm PRV’s, inline check valves, 15mm relief valves, 3Kw unvented immersion heaters and 12 litre expansion vessels. They were also manufactured with 100mm of insulation to meet their heat loss requirements.
The POWERflow copper unvented hot water cylinder range provides fantastic benefits with the use of copper providing the most efficient heat transfer not only in standard units but also bespoke units, tailored to your size and requirements.
The bespoke design flexibility of the POWERflow range overcomes the restrictions of it’s stainless steel alternative. 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. Having a cylinder manufactured to your installation requirements, the installation time is also reduced, providing benefits to both the installer and homeowner.
Based along Glasgow’s canal these new homes are a mix of 3 & 4 bedroom town houses and provide an opportunity for contemporary, low carbon, urban living. Just a short walk from Glasgow city centre, Glasgow’s Canal is home to a rich mix of culture, sports and urban nature. From grass-roots art studios and work spaces, to arts venues and national cultural organisations, the new and evolving cultural hub is bringing together some of the most creative minds in Scotland.
Click here to see our complete range of unvented cylinder solutions.


