District heating networks deliver low-carbon thermal energy from local energy sources to multiple buildings. Developing a safe and reliable heating network involves intelligent engineering, quality and professional installation.
PRE-INSULATED PIPING APPLICATION
Heating Networks
Every network is unique, various stakeholders are involved in the design, installation and operation of a district heating scheme. The installation takes place in the public domain and is expected to be smooth and safe. Comfort, reliability and energy performance are key during the operational phase of the network.
ENGINEERED FOR EXCELLENCE
From Concept to Commissioning
Effective network design balances heating demand, available energy sources, and material selection. Plastic pipe systems offer distinct advantages: smooth internal surfaces, inherent flexibility, and selfcompensating thermal behavior—resulting in simplified layouts, fewer components, and accelerated installation. District heating typically follows high CAPEX, low OPEX models. Pre-insulated pipes combined with project-specific prefabrication dramatically reduce installation time, labor costs, and site risk while maintaining design precision and quality.
PERFORMANCE & LONGEVITY
Built For Decades of Reliable Operation
Over 40 years of proven performance across diverse heating applications demonstrates the reliability of plastic pipe systems. Polybutene-1 (PB-1) materials resist corrosion and fouling—eliminating maintenance requirements and ensuring consistent thermal insulation efficiency within EN15632 parameters (80°C continuous, 95°C peak). Fusion-welded plastic fittings create permanent, leak-free connections. Professional heat-shrink insulation joints prevent water ingress, protecting system integrity throughout the 30-year minimum service life guarantee.
EXPERT SUPPORT & RESOURCES
Partner with Our Technical Team
Optimal network performance requires expert design, material selection, and professional installation. Our engineering team supports every project phase—from hydraulic calculations and compliance documentation to installation training and commissioning. Access our technical whitepapers, product specifications, and case studies to learn how district heating professionals optimize their networks.
EMPOWERING INDUSTRIES WORLDWIDE
Flexalen® Products
50
Years of Expertise
45
Countries Served Worldwide
500
Industrial clients
20
Product lines
OUR SERVICES
Advice and Support
From specification to commissioning, our technical experts ensure your systems deliver maximum performance.
Links to the Engineering & Support page
Engineering and support
Technical product selection, network design, and thermal optimization to meet your system requirements.
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Links to the co-development page
Co-Development
Collaborative engineering partnerships to develop custom solutions tailored to your specifications.
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Links to the Installation Training page
Installation Training
Professional installation training options to ensure correct system deployment.
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Links to the Pipe Pre‑Insulation Service page
Pipe Pre‑Insulation Service
Meet your customers’ demand instantly with insulated pipes, without changing your production process.
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Sustainable insulation for efficient buildings
Watch video
FREE WHITEPAPER
The biggest mistake to avoid when calculating heating networks
Designing heating networks can be a real challenge. In this whitepaper you will learn all about the biggest mistakes to avoid.
FREQUENT ASKED QUESTIONS
How sustainable are Thermaflex solutions
Thermaflex is committed to genuine sustainability across our entire product portfolio. Our solutions achieve Cradle to Cradle® Certification, carry Environmental Product Declarations (EPDs) supporting LEED, BREEAM, and DGNB certifications. We’ve transitioned to renewable energy in our operations and are dedicated to net-zero emissions. Through circular economy principles, safe material formulations, and transparent lifecycle reporting, Thermaflex enables customers to build sustainably without compromising performance. Read more.
Does Thermaflex offer technical support
Yes. Our team provides comprehensive engineering support including system and network calculations, material selection guidance, compliance documentation, installation trainings and project support. Contact our team by email international@thermaflex.com, or explore more services here.
What applications are Thermaflex products suitable for
Thermaflex solutions serve various market sectors: HVAC/R systems, construction, district heating and cooling networks, drinking water distribution, marine/shipbuilding, equipment manufacturing, packaging, and other specialized applications including transport and industrial systems. Learn more about our applications here.
In how many countries is Thermaflex active
Thermaflex is a global company, headquartered in the Netherlands, with production facilities in the Netherlands, Poland, Turkey, and Thailand. We have sales offices across multiple continents including France, Germany, Austria, Denmark, and Asia, allowing us to serve customers globally. Find our international offices here.
Can Thermaflex products be customised
Yes. We offer two levels of customization: Factory Customization produces precision-engineered solutions including custom-dimensioned components, specialized fittings, and integrated assemblies; Co-Development partners your expertise with our R&D capabilities to create solutions for unique applications, specialized requirements, or OEM integration. Contact us to find out more.
