From pioneers in boiler technology… to global leaders in energy and environmental solutions

From pioneers in boiler technology… to global leaders in energy and environmental solutions

John Thompson is a division of ACTOM (Pty) Ltd. Our proud history of boiler design and manufacturing supports our principal focus: to be a global leader in energy and environmental solutions through value engineering and innovation.

Innovative boilers, stokers and associated energy solutions – from needs analysis to installation and support

Firmly focussed on serving our global customer base, we offer the following products and services: Boilers, Environmental Solutions (including Air Pollution Control), Engineering, Energy Management, Manufacturing, Spares, Maintenance and Training.

To assure our customers of the best solution to any engineering challenge, our engineering teams can accurately simulate virtually any scenario, using the latest computational fluid dynamics technology. Our capabilities in finite element analysis and in thermal, circulation and solid modelling enable our solutions to be custom-fit for purpose, every time.



Dedicated engineers with many years’ experience head up our Boiler Division. We design, manufacture, install, maintain and retrofit all boilers and associated equipment. Learn More

Learn moreabout our energy efficient boilers

Environmental Solutions

We offer one of the world’s most comprehensive ranges of air filtration/dust collection equipment for emission control, gas cleaning and product recovery. Our capabilities cover industrial environmental solutions and utility plant environmental solutions. Learn More

Learn moreabout our environmental solutions


As a leader in boiler technology we place strong emphasis on product development and thermal/combustion technology. Our wide-ranging welding capabilities serve our clients’ mission critical applications well. Learn More

Learn moreabout our engineering capabilities

Energy Management

Our Energy Management Department demonstrates our commitment to delivering world class competitive services to the growing number of customers who choose to outsource their non-core business. Learn More

Learn moreabout our energy management services


Our manufacturing and foundry works has become one of the top facilities of its kind. Our services include welding and non-destructive testing. Learn More

Learn moreabout our boiler manufacturing facilities

Spares & Maintenance

A full range of Original Equipment Manufacturer (OEM) spares is available for all John Thompson boilers, stokers and other ancillary equipment. We produce cast spares in our own foundry near Cape Town, so customers are assured of ex-stock supplies. Learn More

Learn moreabout our boiler spares and related parts


We have been conducting comprehensive training programmes for welders, boilermakers, operators, maintenance staff and engineers for the past 20 years. Learn More

Learn moreabout our training opportunities


From pioneering beginnings in 1824, John Thompson is today focussed on being a global leader in energy and environmental solutions. Learn More

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Catch up on latest John Thompson news, press releases and adverts. Learn More

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Industries in which we operate

Power Generation


Iron & Steel




Ferro Alloys

Iron Ore

Mineral Sands



Tyres / Rubber


Gold Mining


Industrial Boilers

Food Processing

Quality above all

Our Quality System is certified to ISO 9001: 2015 and listed accordingly. We have designed and built equipment in accordance with a number of international codes and specifications, including AD Merkblatter, ASME, ANCC (Italian), TRD, EN, British Standard and ISO 3834 for welding.

Learn moreabout our quality and accreditations

DQS ISO 9001
DQS ISO 14001
DQS ISO 45001
ISO 3834
BBBEE Level 1
Lloyd's Register Approved
Labour Department
Proudly South African