Designing your boiler room, installing your steam, thermal oil, hot water or central heating boiler, organising the heat transport to your users via pipes... we bring your production process or plant to the right temperature.
Our team of concept and sales engineers, project managers, project leaders and draughtsmen invariably manage to come up with the ideal technical solution for your heating needs or issues and are always happy to work it out for you in detail. On the basis thereof, you will receive a competitive quotation.
Our technology engineers keep a watchful eye on the technical standards and a keen eye on any innovations our R&D department comes up with.
Our skilled, experienced pipefitters, installers, welders and electricians see to the qualitative and timely installation of your system.
Our commissioning engineers, for their part, ensure your system is commissioned and set correctly, and for its visualisation. Our 125-strong crew enables us to complete the most complex, time-critical projects, to your satisfaction.
Thermal system servicing
Technical problem or scheduled maintenance?
Our team of 21 skilled service engineers and burner technicians and 12 highly-trained maintenance technicians are at your beck and call seven days a week, 24 hours a day. Add to that our large stock of spare parts and its little wonder that you'll find a Callens team knocking at your door within 2 hours of your call, anywhere in Belgium.
We are proud to be able to offer you the most secure and reliable service in our sector.
Working with Callens stands for... strength, reliability and safety!
Personal approach to customers and staff
In-house engineering department, staffed by experienced engineers
Do you have a temporary need for extra thermal capacity? Rent a steam boiler, thermal oil boiler or an industrial heating boiler. At Callens you can find an extensive range of premium rental boilers for your production area, with capacities going from 200 kg to 25 tons.
Steam is a perfect step on the way to a more energy-efficient production process. Together with Optimum by Callens, we installed at this potato processor a well-matched, highly efficient total package.
Thanks to our extra steam collector and pipelines, this manufacturer of canned drinks can now usefully deploy all the steam available on his site, feeding an extra production line of well-known fruit juices.
Did you know that you, too, can benefit from the virtual reality of our thermal installations? It gives you and your maintenance technicians a clear view on how to service every component easily and safely.
This pioneering cardboard producer opened a brand new site to serve his customers in e-commerce and industrial activities even faster. Thanks to the Callens steam that is now steadily flowing, the cardboard comes down the production line quickly and correctly.
While we’re transforming this boiler room into a future-proof place, we’re giving the customer a rental boiler that delivers 10 tons of steam per hour to guarantee a continuous flow of heat for its tank storage in the meanwhile.