A+W Frauenfeld

We want to satisfy the increasing demand for solutions which are not just optimised from an energy and economic point of view but also from an ecological point of view, by providing future-oriented services. As a consulting office we enjoy a good reputation throughout the whole of Switzerland as an innovative team for ecology in the construction industry, integral planning, energy concepts, as well as building operation and maintenance concepts based on sustainability.

Our strengths lie in construction technology which includes all aspects of planning of technical building systems.

Sustainability - The goals defined in the federal government's Energy Strategy 2050 and the regulations derived from the cantons (MuKEn 2015) set the framework for the planning, implementation and operation of sustainable buildings and energy infrastructure.

Elegance - With our competent staff at our Frauenfeld site, we ensure that these framework conditions and the needs of our customers are reconciled with technically elegant and ecologically and economically sustainable solutions.

Added value - We manifest the future-proof added value of our consulting and engineering services in the field of energy and building services engineering in system solutions that are as CO2-free and exergetically optimised as possible, which place life cycle costs at the centre of the economic consideration.

Competence - From the energy concept for entire areas or individual buildings, through all planning phases to commissioning, but also for the analysis and operational optimisation of existing buildings, we are available to you as a builder-owner, administrator or architect throughout the entire life cycle of the property as a competent partner for technology on site.


Fäh Tobias

Fäh Tobias
A+W Frauenfeld

Krüsi Werner

Krüsi Werner
Senior Consultant
A+W Frauenfeld


Amstein + Walthert AG
Stammeraustrasse 8
CH-8500 Frauenfeld

+41 52 723 22 55


Legal form

Branch of Amstein + Walthert PLC in Frauenfeld

Core competencies

  • School buildings
  • old age and care centres
  • Administrative and commercial buildings
  • Energy centres and area networks

Membership in the following associations, among others

  • SIA – Schweizerischer Ingenieur- und Architektenverein
  • SNV - Schweizerische Normenvereinigung
  • suissetec – Schweizerisch-Liechtensteinischer Gebäudetechnikverband
  • suisse.ing
  • SWKI – Schweizerischer Verein von Gebäudetechnik-Ingenieuren

Facts and Figures

20 employees