Maintenance and service for maximum operational reliability

Thermal, air, and emission-reduction systems need to perform safely, energy-efficiently, and reliably for many years. Choose a partner who knows your installation inside out, plans preventive maintenance, monitors performance, and responds quickly when a problem arises.

Callens Group organizes preventive maintenance, a 24/7 service, repairs, and monitoring through its in-house service team. This keeps your installation up and running and gives you one technical partner throughout its entire service life.

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Service you can count on

Service is a complete support package that gives you both regular maintenance and fast, targeted interventions.

With a strong in-house service organization, specialized technicians, and in-depth knowledge of industrial thermal, air, and emission-reduction technologies, Callens Group supports your installation throughout its entire service life.

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in-house maintenance and service technicians
+ 120
available for interventions
24/7
service and support
< 2 u
international warehouses with an extensive stock of spare parts
13
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One partner, even after commissioning

For Callens Group, a project does not end once your installation has been started up. Our engineers, service coordinators, and technicians remain involved afterwards. This combination of engineering, maintenance, and service gives you one point of contact that knows your installation and can respond quickly to any changes, expansions, or malfunctions.

Maintenance or service? We provide both.

Maintenance and service complement each other.

Together, they ensure maximum operational reliability throughout the full service life of your installation.

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Maintenance

  • Planned and preventive
  • Keeps the installation in top condition and increases efficiency and service life
  • Periodic inspections
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Service

  • Solves unexpected malfunctions
  • Limits downtime and restarts production as quickly as possible
  • Telephone assistance, remote support, and interventions
Unique in the market

Why choose the Callens Group maintenance and service department?

With an in-house service organization, specialized technicians, and many years of expertise in thermal, air, and emission-reduction technologies, we support your installation throughout its full life cycle. From preventive maintenance and technical optimization to fast interventions, you can rely on a single partner who knows your installation and safeguards your production continuity.

One point of contact throughout the full service life

From engineering and installation to maintenance, optimization, and expansions. Because we know your installation, we can analyze faster, maintain more efficiently, and intervene with precision.

In-house service organization

With more than 120 in-house service and maintenance technicians, Callens Group has the capacity and expertise to respond quickly, usually without relying on external parties.

Specialists in thermal, air, and emission reduction

Our technicians understand the specific challenges of industrial boiler systems, air technology, process installations, and emission-reduction systems.

Preventive and corrective maintenance for minimal downtime

Regular inspections, measurements, and timely replacements help installations operate safely, maintain efficiency, and last longer. If a malfunction does occur, we resolve it as quickly as possible to avoid production downtime.

Smart monitoring for maximum uptime

Via remote monitoring, we continuously keep an eye on your installations. This allows us to detect deviations faster, support operators, and often prevent malfunctions before they affect your production.

Always reachable

With a service contract, our 24/7 service department is always on hand for urgent interventions and technical support.

SOLUTIONS

Our maintenance and service offerings

Every production environment has different requirements for availability, response times, and support. At Callens Group, all service activities are centralized in one multidisciplinary organization.

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Maintenance

Periodic inspections, preventive maintenance, statutory inspections, technical audits, and optimization to maximize the service life, safety, and energy efficiency of your installation.

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24/7 service

When a malfunction occurs, every minute counts. Our service department is ready day and night to solve problems quickly, by phone, through remote support, or on site.

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Repairs

From mechanical and electrical repairs to welding, concrete repairs, overhauls, and component replacements. We repair quickly so your installation operates optimally again.

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Maintenance and service contracts

Choose a service formula that matches your production process, desired response time, and business-critical installations. That way, you are assured of the support your company needs.

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Remote monitoring

With smart monitoring, our specialists continuously keep an eye on your installation. Deviations are detected faster and many issues are resolved before they cause a malfunction.

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OUR WORKFLOW

From analysis to intervention

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Analysis

Every installation has its own specifics. That is why we tailor our services to the criticality of your installation and the continuity of your production process.

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Maintenance and service plan

Based on our analysis, we propose a suitable maintenance and service package.

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Preventive maintenance

Our service and maintenance technicians perform periodic inspections, checks, and optimization to reduce the risk of malfunctions.

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Remote monitoring

Where possible, we regularly follow your installation remotely to detect deviations at an early stage.

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Intervention

In the event of a malfunction, our service technicians provide a fast and efficient solution.

A technically complementary team

Behind every intervention is a complementary team of service coordinators, engineers, maintenance technicians, welding specialists, and spare-parts specialists. This not only ensures that you get support fast, but also guarantees you targeted technical expertise to maintain and repair complex installations sustainably.

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Looking for a maintenance partner?

Do you want to increase the operational reliability of your thermal, air, or emission-reduction installation? Our specialists will be happy to identify which maintenance and service formula best suits your production environment.

Contact us

Questions?
We have the answers.

Yes. Our service teams continuously invest in training and work closely with specialized partners to professionally maintain new technologies such as electrified installations, including e-boilers, electric resistance boilers, and hybrid steam boilers.

That depends on the criticality of your installation, the desired response time, and the impact of any downtime. That is why Callens Group offers different service formulas with varying response times and service levels. View all our formulas.

Yes. Existing industrial thermal, air, and emission-reduction installations can also be maintained by our service teams. During an initial technical analysis, we map the installation and determine which maintenance approach is most suitable.

Preventive maintenance helps identify wear before small deviations develop into costly malfunctions. This keeps installations operating safely, maintains efficiency, and significantly reduces the risk of unplanned downtime.

A malfunction is first analyzed by phone. If possible, our specialists solve the problem remotely. If an on-site intervention is needed, we will dispatch a service technician in accordance with your service contract.