Planning and construction of district and local heating networks, energy systems and building services with thermal storage systems up to 30,000 m³.
Hanneken Haustechnik GmbH & Co. KG
Wachtum (Löningen) · LindernNew on Amplifa
Hanneken Group – Energy that delivers
Founded in 1975 in Wachtum, Hanneken Haustechnik GmbH & Co. KG is a specialist company for holistic energy solutions with around 30 employees. The company plans, builds and operates local and district heating networks, decentralised energy centres with combined heat and power, and intelligent thermal storage systems up to 30,000 m³. The technology portfolio includes combined heat and power units (CHP), heat pumps and large-scale heat pumps up to 1,000 kW, biomass boilers up to 4,000 kW, solar thermal systems and power-to-heat plants with electrode boilers. In-house civil engineering and pipeline capacities, including for buried PE gas pipelines up to DN 300 and 5 bar, enable projects to be delivered from a single source – from profitability analysis and permitting design through to operation, remote monitoring and contracting. Customers include municipalities and utilities, industry, trade and commerce, as well as the agricultural and biogas sectors, with a focus on north-west Germany (Weser-Ems) and nationwide beyond. In addition to its headquarters in Wachtum (Löningen), the group has been operating a second site in Lindern for the Energy Systems business division since November 2025.
- Site
- Wachtum (Löningen)
- Processes
- Combined heat and power / CHP units (planning, construction, operation), District / local heating networks (planning, construction, maintenance, contracting), Thermal storage / intelligent buffer storage (planning and execution), Heat pumps / large-scale heat pumps (portfolio up to 1,000 kilowatts), Solar thermal systems, Power-to-heat / electrode boilers, Biomass boilers (planning and installation up to 4,000 kW), Biogas pipeline construction (buried PE gas pipelines up to DN 300 and up to 5 bar)
- Materials
- Steel (pipelines, thermally insulated), PEX (pipes), PE (gas pipelines), Steel (thermally insulated pipelines), PEX pipes, PE (polyethylene)
- Founded
- 1975
- Employees
- ca. 30
- Industries
- Municipalities/municipal utilities, Industry, Trade and commerce, Agriculture/agricultural and biogas sector, Private customers, Private customers (single- and multi-family homes)
- 01
Consulting and profitability analysis
- 02
Planning, design and permitting design
- 03
Civil engineering (pipe trenching, crossings)
- 04
Pipeline construction steel/PEX/PE
- 05
Construction of heating plants and energy generation (CHP, boilers, heat pumps)
- 06
Commissioning, remote monitoring, maintenance and contracting
Materials and Processes
Steel (thermally insulated pipelines)
Used for buried heating networks in robust, heavily insulated versions.
PEX pipes
Used as the situation requires for service connection lines and heating networks.
PE (polyethylene)
Buried gas pipelines up to DN 300 and up to 5 bar for biogas pipeline construction.
Locations
Wachtum (Löningen)
DEHeadquarters / Building services
- Materials
- Stahl, PEX, PE
Lindern
DEEnergy Systems business division (new building, occupied 11/2025)
- Materials
- Stahl, PEX, PE
Systems and Services
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Combined heat and power / CHP units (planning, construction, operation)Engineering | – | – | – | – | Biogas, Biomethane, Natural gas |
| District / local heating networks (planning, construction, maintenance, contracting)Engineering | – | – | – | – | Steel, PEX |
| Thermal storage / intelligent buffer storage (planning and execution)Engineering | – | – | 30,000 m³ | – | – |
| Heat pumps / large-scale heat pumps (portfolio up to 1,000 kilowatts)Engineering | – | – | – | – | – |
| Solar thermal systemsEngineering | – | – | – | – | – |
| Power-to-heat / electrode boilersEngineering | – | – | – | – | – |
| Biomass boilers (planning and installation up to 4,000 kW)Engineering | – | – | – | – | Wood, Pellets, Wood chips, Logs |
| Biogas pipeline construction (buried PE gas pipelines up to DN 300 and up to 5 bar)Joining | – | – | – | – | PE |
| Civil engineering (pipe trenching, crossings, laying, surface restoration)Assembly | – | – | – | – | Steel, PEX, PE |
| Building services: installation of plumbing, heating, air conditioning and ventilation systemsAssembly | – | – | – | – | – |
| Engineering services in the energy sector, subsidy consultingEngineering | – | – | – | – | – |
| Contracting / operation of heating networksEngineering | – | – | – | – | – |
Additional services
Reference customers
History
- 1975
Founded as a heating engineering specialist company by Helmut Hanneken and Bernhard Moormann in a warehouse in Wachtum.
- 1986
Master craftsman qualification for plumbing, gas, water and metalwork; relocation to the current site; 7 employees.
- 2000
25th company anniversary.
- 2006
Frank Hanneken joins the company; focus on renewable energies.
- 2010
Establishment of an in-house civil engineering department; specialisation in district and local heating networks.
- 2015
40th company anniversary.
- 2016
Approx. 30 employees; handover to Frank Hanneken; renamed Hanneken Haustechnik GmbH & Co. KG.
- 2017
Energy village of Wachtum receives the climate protection award in the competition "Our Village Has a Future".
- 2023
Unofficial groundbreaking for the second site in Lindern.
- 2025
Move into the new building at the Lindern site (01.11.2025).
- 2026
Belated celebration of the 50th anniversary; Energy Systems business division in Lindern active for industrial and commercial customers.