Hot Water Cylinder News

Hot Water Cylinders for Passivhaus Project

McDonald Engineers has secured a major project to design and manufacture its POWERflow unvented cylinders for a housing association which is building homes to meet the Passivhaus standards.

The nature of the Passivhaus approach and its use of renewable energy sources means that the hot water system can often use more energy than the heating of the building.

Health Issues Stored Water

Potential Health Threats of Stored Water Demonstrated

After several high profile incidents involving legionella and stored water, McDonald Engineers embarked upon a small scale project to understand the impact of copper’s unique bacteria killing properties.

The experiment was simple. We filled 2 clear glasses with water and placed a section of foam material in each glass. We then placed a 7cm x 4cm piece of copper in one of the glasses, then sat back and waited for the magic to happen.

After only 2 weeks, bacteria could clearly be seen in one of the glasses, whereas the glass with the copper was absolutely clear.

Emergency Calorifier Replacement

McDonald Engineers has saved a local council thousands of pounds by responding to an emergency calorifier replacement for a residential home in the North East of England.

The council were facing the prospect of moving the elderly residents into a hotel until the hot water service had been restored, at considerable cost and disruption to the elderly residents.

rectangular thermal store with multi fuel capabilities

Rectangular Thermal Store Demonstrates Full Multi Fuel Capabilities

McDonald Engineers designed and manufactured a 375 litre rectangular thermal store for a private dwelling which incorporates solar thermal, solid fuel, an air source heat pump and an electric immersion to deliver all the hot water needs and supply the underfloor heating.

To ensure the hot water demands of the home were met, McDonald Engineers specified an external plate heat exchanger which acts as the main hot water source with the thermal store being called upon as a backup.

Horizontal Calorifiers

Horizontal Calorifiers for Major UK Supermarket

McDonald Engineers has designed, manufactured and supplied a number of horizontal calorifiers for a major UK supermarket ranging from 500 Litre to 1000 Litre Powerflow Commercial calorifiers.

As well as providing a like for like replacement for a calorifier which had failed, McDonald Engineers also manufactured four additional calorifiers for upgrade works at various locations throughout the UK.


Hot Water Cylinder for a Tree House

When you were thinking about building a tree house as a child, ensuring it had piping hot water would possibly not have been top of your wish list, however McDonald Engineers has delivered just that for a client in Wales.

The company, which is widely regarded as one of the UK’s leading manufacturers of bespoke hot water cylinders, were asked to design, manufacture and supply an indirect combination hot water cylinder for a luxury tree house in a Welsh forest.

Hot Water Cylinder Specification

Hot Water Cylinder Specification - How Things Have Changed

Times have moved on dramatically from the traditional approach to domestic hot water systems, with a vented cylinder fed by a tank in the attic, heated by solid fuel or an immersion heater.

The increase in hot water demand, developments in technology, combined with rising energy prices and a growing pressure to reduce the carbon footprint, has seen the range of hot water cylinders on the market explode.

McDonald Engineers - 70 years

McDonald Engineers Celebrate 70 Years of Keeping Clients in Hot Water

Getting clients into hot water isn’t everyone’s idea of good business, but McDonald Engineers is celebrating its 70th anniversary of doing just that and has worked hard to become one of the UK’s leading manufacturers of high quality hot water cylinders.

Originally incorporated in June 1945, McDonald Engineers is one of few independent manufacturers who remain in the sector. 


Bespoke Calorifiers for Student Accommodation

McDonald Engineers has enabled a specialised property development company to achieve dramatic savings on the hot water solution for an 89 bedroom student accommodation scheme thanks to a change in design. This change involved a solution that reduced the requirement for 89 individual unvented stainless steel cylinders to only 9 centralised copper calorifiers.

The multi-million pound refurbishment project of transforming eight properties into 89 self-contained residential suites with en-suite bathrooms and kitchens, had originally specified a cylinder for each apartment.