Hot Water Cylinder News

Horizontal Calorifier for Aberdeen Office Development

McDonald Engineers reputation for quality and service was instrumental in securing the contract for an 1800 litre horizontal calorifier for a major office refurbishment project in Aberdeen.

With space a key concern in the building, the architect had specified an 1800 litre horizontal calorifier to supply hot water to the offices and retail area below.

The cased cylinder was manufactured in copper and featured a high efficiency coil and manhole access facility.

McDonald Engineers Launch New THERMflow Brochure

McDonald Engineers have launched a new brochure to support the changing market demands of market leading thermal store, THERMflow.

Thermal stores are becoming an increasingly popular solution for hot water cylinders, not only because of its ability to deliver mains pressure hot water with limited maintenance implications, but also its ability to handle multi-fuel and renewable energy installations.

McDonald Engineers Calorifiers for Andy Murray's Luxury Hotel

McDonald Engineers have added yet another major celebrity to its list of prestigious clients, having worked in conjunction with a mechanical engineer to design the optimum hot water system for Andy Murray’s luxury Cromlix House Hotel development in Scotland.

The company supplied four of its 700 Litre POWERflow Commercial Hot Water Cylinders which were designed to suit the space available and deliver a highly efficient solution which could deliver all of the hot water requirements for guests.

Thermflow Thermal Store

Thermal Stores for Scotland’s Most Desirable Affordable Housing Project

McDonald Engineers has manufactured and supplied thermal stores for a development of affordable homes in an exceptionally rural area with spectacular views overlooking the Western Isles of Scotland.

The stunning homes featured McDonald Engineers’ THERMflow thermal stores with 180 litre capacity and designed to accommodate solar thermal energy and wood burning stoves.

Each home was designed to an individual brief using a blend of timber frames, hemp-lime construction, and a sustainable interpretation of Scottish traditional building.

Feed and Expansion Tank Brochure

Does Your Thermal Store Require a Feed and Expansion Tank?

Primary Feed and Expansion Tanks are generally used in open vented central heating systems, where a small water tank is located in the loft for the purpose of feeding and topping up the primary system and providing a receptacle should the primary water expand.

With normal gas and oil boilers there is little or no likelihood of this water being near boiling temperature.  However when Solid Fuel/Woodburning Stoves are used, there is a possibility that water close to, or at boiling point, may expand into the tank and this requires the tank to be made from a high temperature material.

Customer Delight at Rectangular Thermal Store

McDonald Engineers has demonstrated their ability to deliver the perfect hot water tank by designing, manufacturing and supplying this 250 litre CUBEflow Thermal Store designed to work with a solid fuel boiler and solar thermal panels.


The key requirement of the hot water cylinder was to capitalise on the available space in an existing airing cupboard whilst delivering the required capacity and accommodating two additional fuel sources.

Copper Hot Water Cylinders Key to Award Winning Solar Energy Project

McDonald Engineers has supplied 30 of its POWERflow solar cylinders to an award winning housing project in Scotland at the insistence of an architect who recognised the importance of using copper cylinders with solar energy.

The project, which went on to win the prestigious Green Apple Environmental Award, saw McDonald Engineers supply a combination of 180 litre and 210 litre POWERflow cylinders fitted with high performance finned copper coils to deliver maximum performance.

McDonald Engineers Welcomes Domestic RHI Scheme

McDonald Engineers is delighted to see the government announce the Renewable Heat Incentive will be launched in spring 2014.

As one of the leading players in the design, manufacture and supply of hot water cylinders incorporating renewable energy sources, McDonald Engineers has been calling on the scheme to be implemented for a number of years.

The announcement means the RHI scheme widens the current government incentives to include energy sources such as:

· solar thermal

McDonald Engineers Deliver Exact Replacement for Elson Rectangular Thermal Stores

McDonald Engineers has secured the contract to supply its CUBEflow Rectangular Thermal Store as a direct replacement for existing Elson units for the refurbishment of a busy accommodation centre in the North of England.

The company was asked to supply a 100 litre thermal store unit with all the connections in the exact same place as the existing rectangular tanks to enable the installation process to be quick and efficient.

McDonald Engineers also proposed the incorporation of a fully pumped system which would increase the efficiency of the system.