Master-certified plumbing, heating and air conditioning contractor (SHK) for residential and commercial construction, including register fabrication and prefabricated wet rooms.
Donau-Ries Haustechnik GmbH
86655 Harburg (Swabia), Goethestraße 1New on Amplifa
About Donau-Ries Haustechnik
Donau-Ries Haustechnik GmbH is a certified master contractor from Harburg (Swabia) specializing in heating, plumbing and ventilation. Founded in 2017, the company with around 20 employees supports projects from preliminary planning through execution to handover – all trades are coordinated in-house. The range of services includes heating installation and modernization (gas, heat pump, wood, pellets, CHP), solar thermal, fresh water stations, plumbing and bathroom renovation, barrier-free bathrooms, controlled residential ventilation, as well as register fabrication with prefabricated plumbing walls and wet cells. For commercial customers, the company implements building and plant construction, concrete core activation, riser renovations and buried district heating lines. A focus is on series bathrooms in residential and commercial construction, executed in consistent quality and with repeatable precision.
- Site
- Harburg
- Processes
- Heating installation & heating modernization, Heat pump installation, Gas heating / gas condensing technology, Wood & pellet heating, CHP plant construction (incl. gas condensing peak load boiler), Solar thermal installation (heating support, e.g. 20 collectors), Drinking water treatment / fresh water station, Hydraulic balancing
- Materials
- Copper, Plastic (pipe materials, REHAU brand), Plastic (REHAU)
- Certificates
- Master craftsman business (Chamber of Crafts Swabia)
- Founded
- 2017
- Employees
- 20
- Industries
- Residential construction (multi-family), Commercial construction, Hotels, Gastronomy, Industry, Data centers
- 01
Consultation and site survey
- 02
Participation in planning (specialist planner)
- 03
Quote with fixed price
- 04
Installation of heating, plumbing, ventilation
- 05
Commissioning
- 06
Handover
- 07
Maintenance and service
Materials and Products
Copper
Pipe material in plumbing and heating installations.
Plastic (REHAU)
Pipe materials for heating and plumbing systems.
Locations
Harburg (Swabia)
DEHeadquarters and office
Services and Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Heating installation & heating modernizationAssembly | – | – | – | – | – |
| Heat pump installationAssembly | – | – | – | – | – |
| Gas heating / gas condensing technologyAssembly | – | – | – | – | – |
| Wood & pellet heatingAssembly | – | – | – | – | – |
| CHP plant construction (incl. gas condensing peak load boiler)Assembly | – | – | – | – | – |
| Solar thermal installation (heating support, e.g. 20 collectors)Assembly | – | – | – | – | – |
| Drinking water treatment / fresh water stationAssembly | – | – | – | – | – |
| Hydraulic balancingEngineering | – | – | – | – | – |
| Riser renovation heating-plumbingAssembly | – | – | – | – | – |
| Renovation of buried district heating lineAssembly | – | – | – | – | – |
| Buffer tank connection (e.g. 150,000 liters) incl. pressure maintenanceAssembly | – | – | – | – | – |
| Concrete core activation (heating)Assembly | – | – | – | – | – |
| Plumbing installation / bathroom renovationAssembly | – | – | – | – | – |
| Barrier-free bathroom / level-access showerAssembly | – | – | – | – | – |
| Register fabrication & prefabricated plumbing walls / wet cellsAssembly | – | – | – | – | – |
| Tiles & surfaces (waterproofing, tiling)Surface | – | – | – | – | – |
| Controlled residential ventilation with heat recoveryAssembly | – | – | – | – | – |
| Building & plant construction (heating, plumbing, ventilation)Assembly | – | – | – | – | – |
| Maintenance & service of heating, plumbing and ventilation systemsTesting | – | – | – | – | – |
| Commissioning & project supportAssembly | – | – | – | – | – |
| Participation in planning (interface to specialist planner, no in-house planning)Engineering | – | – | – | – | – |
| ELT (electrical, cabling and telecommunications engineering, in trade consortium)Assembly | – | – | – | – | – |
Additional services
Quality and Qualifications
The company is run by a certified master craftsman (plumbing and heating installation, Chamber of Crafts for Swabia) and works with products from well-known manufacturers; work is executed with documentation and includes maintenance and service offerings for continuous operation.
| Evidence | Harburg (Swabia) |
|---|---|
| Master craftsman business (Chamber of Crafts Swabia) |
Company History
- 2017
Founded in Harburg by master craftsman Willibald Quasnitschka
- 2019
First completed reference projects in residential construction, hotels, commercial and industry
- 2020
Conversion to Donau-Ries Haustechnik GmbH
- 2026
29 completed reference projects since 2019