Flowex GmbH

Heat - cold - water - air

We strive for simple solutions on site. The flow direction must be crystal clear. Clarity comes from being on site, with the customer, discussing the challenges, and possible solutions.

In this way we understand your systems to help you find the solutions you need.

Our goal: Simple and efficient energy and supply systems!

Features & Benefits


FLOWEX GmbH stands for:
Simple and safe energy and supply systems – in theory and in practice.


Residential Buildings

  • Energy conceptualization, feasibility, and variant study
  • Realization: planning, construction management, and commissioning
  • Expertise in optimization of existing systems
  • Objective: ecological and economical energy and supply systems

Industrial and Commercial

  • Energy conceptualization, and feasibility: process heating, and cooling, heat recovery
    in buildings.
  • Realization: planning, construction management, and commissioning
  • Optimizing the operation of existing plants
  • Objective: Safe, economic, and ecological supply systems

One Contact Person

  • Independent
  • Personal service – One contact person
  • Variant, product, and cost security
  • Objective: systems tailored to customers’ needs

Quality Control

  • Quality Control management (plan – do – check – act)
  • Involvement of the customer in the decision-making process
  • Orientated towards QM processes
  • Objective: continuous improvement
Networked Systems

Clarity in the system

Supply systems with water and air, for heating, cooling, or air conditioning, in buildings or in industrial plants, operating today as complex, networked systems. We know the connections.

We create clarity for the customer. Crystal clear, sophisticated, and economical systems.

From conception to implementation.


Apply the right lever

Just like Archimedes once said:
“Give me a lever long enough and a fulcrum on which to place it, and I shall move the

A lot can be moved with the long lever.

Complex, networked systems show many different levers.
Knowing the “right” lever is important for every system operator.

We want to pull or turn the right lever with the client!
From conception to implementation.

Success & savings can be measured

Let's connect

About Us

In these digital, increasingly impersonal times, it is important to know each other.

Patrick Felder


Patrick Felder


Energy and supply technology, learned from the bottom up.

  • (1997-2002) apprenticeship plumbing and heating installer
  • (2006-2009) B.Sc. in HVAC Engineering
  • (2011-2013) MSc in Engineering, Energy and Environment
  • (Until today) Many years of international experience in consulting, designing and
    construction of energy and HVAC systems.
  • (since 2018) Lecturer for energy, heating and air conditioning technology at the
    St.Gallen Centre of Vocational Education and Training.

Experience: advising, designing and implementation

  • Industry: galvanizing, hardening, foundry, extraction, metalworking
  • Buildings: wood energy, heat pumps, natural gas, (thermal) solar energy, air

Reference persons on request.

Ursula Felder

Co-owner / QM

Ursula Felder

Co-owner / QM

Industrial and system technology, learned from the bottom up.

  • (1999-2003) apprenticeship plastics technologist
  • (2004-2007) B.Sc. Systems Engineering
  • (2012-2015) M.As. industrial engineering
  • (Until today) Many years of international experience in production, development and quality management