Flexible and reliable pre-insulated piping networks for district heating, cooling, and water distribution.
SMART DHC PIPING SOLUTION
Pre-Insulated Piping System
On-site piping installation is complex: limited space, tight planning, and the need for expert installers create delays, errors, and cost overruns. Flexalen® pre-insulated polybutene-1 (PB-1) piping systems eliminate these risks. Fully customizable and largely prefabricated, our networks deliver rapid installation, superior reliability, minimal disruption, and long-term performance.
DISTRICT HEATING & COOLING NETWORK SOLUTION
Trusted by Professionals
With 50 years of experience developing Flexalen® pre-insulated piping systems for district heating and cooling networks, Thermaflex partners with leading energy companies to support the energy transition. From transporting surplus heat to replacing fossil fuel heating with centralized systems, our flexible networks minimize heat losses, ensure sustainability, and provide regulatory compliance support, training programs, and technical guidance for rapid deployment
NETWORK EXCELLENCE BUILT IN
Optimized for District Networks
Flexalen® fully recyclable polymer systems are specifically optimized for district heating and cooling networks, with additional applications in drinking water and geothermal systems. Prefabricated network elements, including T-pieces and complete components, eliminate on-site errors, increase reliability, and dramatically accelerate installation speed. Our advanced insulation values (with Flexalen PU delivering enhanced performance) minimize heat losses in district networks while supporting sustainable, efficient infrastructure for both renovation and new-build projects.
FULLY CUSTOMIZABLE FOR YOUR DISTRICT NETWORK
From Design Through Installation
Our district heating and cooling network solutions adapt to every challenge, from city-wide installations to local neighborhood systems, fully customizable to local conditions and future needs. From initial design phase through installation, we provide system requirement establishment, district network calculations, regulatory compliance assistance, training programs, and complete engineering support. Prefabricated elements reduce installation times and costs while ensuring efficient operation and minimal surrounding area disruption.
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
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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.
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Frequently 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 the insulation 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 internatioanl offices here.
Can Thermaflex insulation 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.
