Cochran Hot Water Boilers - The Trusted Preference of Many Industries
The latest range of Cochran hot-water boilers, the HW29 and HW34 ranges have been designed to maximise efficiency and environmental performance. The boilers are designed to match with leading proprietary combustion equipment, as well as the Cochran range of low NOx burners.
The boilers are designed to meet the current UK building regulations with gross seasonal efficiency of over 86%, which equates to a typical boiler net efficiency of 95%. The NOx targets below 80 mg/kWh which meets the requirements for BREEAM points
Cochran provides industrial hot water boiler solutions for both process and heating applications.
Cochran hot water boiler plant is the trusted preference of many industries, ranging from hotel chains, bottling plants, food processing factories and a wide range of public buildings.
Hot Water Boiler, Model: HW29

The Cochran HW29 series of compact hot water boilers has been developed to meet today’s demands for higher operational efficiencies and lower emissions. Built to the latest harmonised European codes, the HW29 series utilises cutting edge combustion and control equipment. The fully wet back design provides industry leading levels of efficiency and low NOx emissions. Available as the HW29 LT for low temperature hot water applications, built to EN14394 and the HW29 HT for medium and high temperature applications, built to EN12953. The wide range of outputs from 450kW to 4.1MW provide energy saving, low emission solutions for all commercial and industrial applications.
The HW29 hot water boiler is available from:
Ratings: From 450 kW to 4100 kW
Standard Working Pressures: 6.0 Bar, with designs available up to 10.0 Bar.
Hot Water Boiler, Model: HW34
For larger Hot-Water system applications the Cochran HW34 series offers a combination of impressive performance and premium quality manufacturing. The conventional three pass full wetback design provides industry leading levels of efficiency and low NOx emissions. Built to the latest harmonised European codes the HW34 series utilises industry leading combustion and control equipment. Available as the HW34 LT for low temperature hot water applications, built to EN14394 and the HW34 HT for medium and high temperature applications, built to EN12953. A wide range of standard outputs from 5MW to 16MW provide energy saving, low emission solutions for all larger industrial applications. Bespoke twin furnace designs for outputs up to 30MW can be supplied.
The HW34 hot water boiler is available from:
Ratings: From 5000 kW to 16000 kW
Standard Working Pressures: 6.0 Bar, with designs available up to 25.0 Bar.
Hot Water Boiler, Model: Calpac
The Cochran Calpac hot water boiler range shares many of the winning features of the Wee Chieftain steam range, reformatted to deliver exceptional hot water generation performance.With a reputation for robust design and reliability, Calpac's are in service around the world. The design is based on a three pass, wet back system with additional flexibility provided by the Calpac’s tolerance to high differentials in the feed and return temperatures of the hot water system. Typical applications include schools, hospitals, process heat and district heating schemes. The Calpac range features low NOx, low noise Cochran burners as standard, backed up by a wide range of control options.
The Calpac hot water boiler is available from:
Rating: 879 kW/hr to 3515 kW (3x106 BTU/hr to 12x106 BTU/hr).
Standard Working Pressure: 9.3 Bar, with designs available up to 27 Bar.