Trusted expertise since 1969 – Experience drives success

Our team stands for continuity and quality. Our corporate culture is shaped by team spirit, reliability, trust, and mutual respect. We value both technical expertise and social competence, and we actively support the continued development of our employees. For each project, we assemble the planning team in a way that allows our experienced engineers to contribute their individual expertise in the most effective way. State-of-the-art technical tools such as PCs and CAD software support them in their work.

Bringing performance and design into perfect balance

tp Philosophy

Technology is our passion. But we also understand that the best building systems are often the ones you don’t see. The expectations of architects and developers – in terms of aesthetics, efficiency, and sustainability – shape everything we do. We offer independent consulting and always seek the best solution, regardless of the provider. We’re committed to quality, precision, and design excellence – and we won’t settle for less.

A partnership you can rely on

tp Collaboration

tp is a reliable partner you can count on – we keep our promises, take ownership of challenges, and respond quickly when solutions are needed. With many long-standing team members, we ensure continuity even in large-scale projects with extended timelines. Architects and developers value this consistency.

Trusted expertise since 1969

tp History

tp is led by its two owners, Cédric Senn and Yann Meyer, together with a team of around 15 employees and 1or 2 apprentices. The company is headquartered in Biel, with additional locations in Delémont (since 2015) and Neuchâtel (since 2003). tp was founded in 1969 by Volker Stahl in Hannover and passed on to Max Siegenthaler in 1995. Cédric Senn and Yann Meyer joined as co-owners in 2008 and became sole owners in 2014.

«We always strive for the perfect solution. It’s perfect when it meets economic, ecological, and social requirements – and works.»
Cédric Senn, Co-owner tp

Your points of contacts

Administration / Finance

Yann Meyer
Building Services Engineer (Advanced Federal Diploma of Higher Education)
Owner / Executive Management

Fabienne Donzel
Administration

Isabelle Meyer
Finance

HVAC – Heating, Ventilation, and Air Conditioning

Cédric Senn
Building Services Engineer (Advanced Federal Diploma of Higher Education)
Owner / Executive Management

Stefano Carissimi
Mechanical Engineer HTL, HVAC Specialization
Member of Executive Management

Markus Siegfried
Building Services Engineer

Andreas Marty
Building Services Engineer (Advanced Federal Diploma of Higher Education)

Manuel Galataud
Mechanical Engineer HTL, HVAC Specialization

Sébastien Thiéry
Mechanical Engineer HTL, HVAC Specialization

Gregory Dunkel
Building Services Planner

Sarina Varetta
Building Services Planner

Nello Calcagno
Apprentice

Radmila Zlatanova
Apprentice

Plumbing / Sprinkler Systems

Yann Meyer
Building Services Engineer (Advanced Federal Diploma of Higher Education)
Owner / Executive Management

Stefan Häberli
Building Services Engineer (Advanced Federal Diploma of Higher Education)

Sébastien Kaech
Plumbing Systems Planner (Advanced Federal Diploma of Higher Education)

Gzim Saliu
Building Services Planner

Markus Pfister
Building Services Planner

Jannis Zürcher
Apprentice

Committed to staying at the top

At tp, we don’t just talk about quality – we deliver it. Our goal is to rank among the very best in the industry. Our quality management follows the principles of ISO 9001:2008, under which we were certified from 1999 to 2011. For every project, quality is our top priority.
Our engineers and planners bring deep expertise, decades of experience, and a sharp eye for innovation. They develop future-proof building technology solutions with foresight and precision.
Ongoing professional development is second nature to us – and we invest in the next generation with the same mindset. That’s how we ensure lasting quality at every level of our work.

Maximizing ecological and renewable potential

tp Sustainability

We provide energy and sustainability consulting with a clear focus on economic, ecological, and social impact. To ensure that key questions — from solar energy to geothermal heating and cooling — are addressed early and aligned with energy efficiency and indoor comfort, we support our clients from the strategic planning stage through early design (SIA phases 10 + 20). We offer targeted advice on sustainability and energy performance and provide a clear view of the associated economic, environmental, and social factors. We rely on advanced simulation tools and the latest calculation software to support sound, forward-thinking decisions.

We speak MINERGIE – fluently

tp Environment

Choosing the most ecological heating method is essential in light of today’s environmental challenges. That’s why MINERGIE-compliant technology is a key focus at tp — and we actively explore other emerging solutions as well.
To stay ahead of the curve, we attend industry trade fairs, contribute to expert panels, and stay current through professional literature and continuing education. We keep our eyes on the future, think ahead, and apply new technologies as soon as they’ve proven their value in the field.

«Our engineers combine experience and expertise to turn cutting-edge building technology into real value – for every client we serve.» Yann Meyer, Co-owner tp