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
Our very first 60T/h fire-tube steam boiler is up and running! A maverick from every perspective! As this project involved replacing an existing condensing boiler, a few ingenious changes to the construction were in order to allow the boiler to operate on a minimum of power.
As this company needs steam day and night a continuous supply is essential. To ensure just that the company has a back-up steam boiler that takes over in the event of problems or when the main steam boilers are being serviced.
This system recovers the heat generated by the incineration of domestic waste and transfers it to the heat grid via a thermal oil and central heating circuit. Henceforth, consumers connected to the heat grid are assured a more sustainable source of energy.