
Building services and electrical installation: heating, plumbing, ventilation, solar and plant engineering in Vorarlberg

Fässler Wolfgang GmbH
Dornbirn (headquarters) · Feldkirch (branch)New on Amplifa
About Fässler Installationen
Fässler Wolfgang GmbH is a building services and electrical contractor based in Dornbirn with a branch in Feldkirch. The company carries out gas, water, heating and ventilation installations (GWZ/IGM) as well as electrical installations in residential and commercial buildings. In plant engineering, the team plans and installs heating systems including pellet and biomass systems, solar systems for hot water preparation and heating support, and ventilation systems ranging from simple exhaust air systems to ventilation systems with heat recovery. The offering is complemented by refurbishment, consulting and planning as well as a customer service team providing first aid within 24 hours, seven days a week. Founded in 1995 as a one-man business by Wolfgang Fässler, the company today employs 59 staff, including 8 apprentices. Since 2001 it has held the Ökoprofit certificate; the company headquarters in Dornbirn was built using ecological construction methods with solar collectors, a pellet heating system and a PV system. Through Fässler Swiss GmbH in Speicher, the company is also active in Switzerland.
- Site
- Dornbirn
- Processes
- Gas, water, heating and ventilation installations (GWZ/IGM), Electrical installations, Heating system installation (conventional, pellet, biomass), Solar system installation (hot water preparation, heating support), Ventilation technology (exhaust air systems, ventilation systems with heat recovery), Building services plant engineering (planning and installation), Building services, Electrical installation
- Materials
- Gas, water, heating and ventilation installation, Electrical installation, Solar systems, Pellet and biomass heating systems, Ventilation with heat recovery
- Certificates
- Ökoprofit
- Founded
- 1995
- Employees
- 59
- Industries
- Private customers (residential construction), Commercial customers/businesses
- 01
Consulting and planning
- 02
Installation
- 03
Customer service and first aid
Services and Techniques
Gas, water, heating and ventilation installation
Installation of gas, water, heating and ventilation systems in residential and commercial buildings.
Electrical installation
Planning and execution of electrical installations in new buildings and refurbishments.
Solar systems
Installation of solar systems for hot water preparation and heating support.
Pellet and biomass heating systems
Installation of environmentally friendly heating systems alongside conventional heating systems.
Ventilation with heat recovery
Exhaust air systems and ventilation systems with heat recovery for a healthy indoor climate.
Locations
Dornbirn
ATHeadquarters
- Materials
- GWZ/IGM, electrical, plant engineering
Feldkirch
ATBranch
- Materials
- GWZ/IGM, electrical
Inside the production

Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Gas, water, heating and ventilation installations (GWZ/IGM)Assembly | – | – | – | – | – |
| Electrical installationsAssembly | – | – | – | – | – |
| Heating system installation (conventional, pellet, biomass)Assembly | – | – | – | – | – |
| Solar system installation (hot water preparation, heating support)Assembly | – | – | – | – | – |
| Ventilation technology (exhaust air systems, ventilation systems with heat recovery)Assembly | – | – | – | – | – |
| Building services plant engineering (planning and installation)Engineering | – | – | – | – | – |
Additional services
Quality and Environment
Since 2001 the company has been awarded the Ökoprofit certificate; the headquarters was built using ecological construction methods with solar collectors, a pellet heating system and a PV system.
| Evidence | Dornbirn |
|---|---|
| Ökoprofit |
Company History
- 1995
Founded as a one-man business by Wolfgang Fässler as a self-employed GWZ installer in the garage of his single-family home; after one month the first apprentice was hired, and in November the first fitter
- 1998
Renamed Fässler Wolfgang GmbH
- 2000
Completion of the new headquarters in Dornbirn using ecological construction methods (solar collectors, pellet heating, PV system)
- 2001
Acquisition of the company Konzett in Nüziders with 3 employees; first award of the Ökoprofit certificate
- 2003
Expansion of the Nüziders branch with an on-site technician
- 2006
Acquisition of the company Fehr Herbert in Feldkirch-Gisingen with 11 employees
- 2008
Registration of the trade licence for electrical engineering
- 2011
Expansion with offices on the 1st OG; founding of Fässler Swiss GmbH based in Speicher (Switzerland)
- 2015
20th company anniversary
- 2017
Addition of a new warehouse building with outdoor storage