Calorifier Range

McDonald Engineers manufacture a wide range of Calorifiers to suit Vented and Unvented installations. Delivery often within one week.

We manufacture to BS 853, 1566 and 699 and hold two Kitemark licences for copper cylinders. A BSI approved quality plan to ISO 9002 is followed and each Calorifier is rigorously tested to ensure problem free installation and operation.

Calorifiers are generally manufactured from Copper which has excellent non-corrosive and anti-bacterial qualities. Other materials are available on request.
Sizing and technical advice are readily available to ensure each unit is supplied suitable for the capacity and pressure required. Design sketches are also available for individual projects.



Direct and Indirect units come in Vertical models mounted on a steel ring stand or on legs and in Horizontal models supplied with cradles if required.


Indirect units can have either a Fixed Coil or a removable U Tube Battery, both suitable for Water or Steam. Fixed Coil types are more economical and an access manhole can be added if access is required for maintenance.

Test Certificates can be issued on request.

Contact us about our Calorifier range

Uncomplicated Quality and Value
Copper Cylinder Manufacturers


Calorifier Brochure

Download our specification/enquiry sheet

Powerflow Unvented Cylinders
Thermflow Thermal Store
Stainless Steel Cylinders
Open Vented Cylinders
Heat Pump Cylinders
Rectangular Hot Water Tanks
Electric Wet Hot Water Cylinders
Marine Calorifiers
Buffer Vessels and Tanks
Plateflow Heat Exchange
Renewable Cylinders
Time Saver
Feed and Expansion Tank
Fast Heat
Back Boilers
Cylinder Spares


Hot Water Cylinders Helpline from McDonald Engineers

Hot Water Cylinder Standards from McDonald Engineers


Calorifier Brochure