Tailored energy concepts: heat pumps, air conditioning, ventilation technology and photovoltaics from a single source
extec Energietechnik GmbH
Osnabrück, DENew on Amplifa
About extec
extec Energietechnik GmbH is a certified master-certified company for electrical, refrigeration/air conditioning and heating technology based in Osnabrück. The owner-managed company develops tailored energy concepts for residential buildings, production halls, warehouses and office spaces, combining air-to-water heat pumps, air conditioning systems, ventilation systems and photovoltaic installations including battery storage and inverters from a single source. The service portfolio also includes IT/EDP air conditioning (split and mono-split units, VRF/VRV systems, chilled water systems), electrical installation, infrared heating, hydraulic balancing and energy-efficient refurbishment of existing buildings. Customers come from sectors such as data centers, clinics, hotels, medical practices, pharmacies, bank branches and department stores. From Osnabrück, the team supplies and installs throughout northwestern Germany, especially in the Osnabrück, Bersenbrück and Ankum region. References include Reifen Günther, Echterhoff, the Hotel zum Heidekrug and the municipal daycare center Eversheide in Osnabrück-Eversburg.
- Site
- Osnabrück
- Processes
- Heat pump (air-to-water) installation, Air conditioning / IT and EDP air conditioning installation, Ventilation technology / ventilation systems planning and installation, Photovoltaic system installation, Electrical installation, Battery storage / electricity storage installation, Infrared heater installation, Hydraulic balancing
- Materials
- Air-to-water heat pumps, Air conditioning / IT and EDP air conditioning, Ventilation technology, Photovoltaics with battery storage, Infrared heaters
- Certificates
- Certified master-certified company for electrical, refrigeration/air
- Industries
- Residential buildings / private customers, Production halls, Warehouses, Office buildings, Data centers, Clinics
- 01
Consulting and creation of individual energy concepts
- 02
Planning (ventilation, air conditioning and energy concepts)
- 03
Delivery of the system components
- 04
Installation and commissioning
- 05
Service and energy efficiency optimization
Technologies & Systems
Air-to-water heat pumps
Heating and hot water solution that draws around 75% of the required energy from the ambient air.
Air conditioning / IT and EDP air conditioning
Split and mono-split units, VRF/VRV systems and chilled water systems for offices, commercial premises and data centers.
Ventilation technology
Planned ventilation systems for filtered and healthy indoor air in halls, hotels and public buildings.
Photovoltaics with battery storage
Solar power generation with inverter, optional battery storage and grid feed-in.
Infrared heaters
Electric heating solution as a supplement for individual room heating.
Locations
Osnabrück
DEHead office with planning, sales and installation
- Materials
- Heat pumps, air conditioning technology, ventilation technology, photovoltaics, electrical installation
- Novatherm air-to-water heat pumps
- Kaysun air conditioning / split units
- Templari air conditioning units and ventilation systems
- Mandik ventilation systems
- Teddington air curtains
- Aermec
Systems & Equipment
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Heat pump (air-to-water) installationEngineering | – | – | – | – | – |
| Air conditioning / IT and EDP air conditioning installationEngineering | – | – | – | – | – |
| Ventilation technology / ventilation systems planning and installationEngineering | – | – | – | – | – |
| Photovoltaic system installationEngineering | – | – | – | – | – |
| Electrical installationEngineering | – | – | – | – | – |
| Battery storage / electricity storage installationEngineering | – | – | – | – | – |
| Infrared heater installationEngineering | – | – | – | – | – |
| Hydraulic balancingEngineering | – | – | – | – | – |
| Room air conditioning units / split and mono-split unit installationEngineering | – | – | – | – | – |
| VRF/VRV air conditioning systemsEngineering | – | – | – | – | – |
4 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Air-to-water heat pump | Novatherm | – | – | – | Osnabrück |
| Air conditioning / split units | Kaysun | – | – | – | Osnabrück |
| Air conditioning units / ventilation systems | Templari | – | – | – | Osnabrück |
| Air conditioning units / ventilation systems | Mandik | – | – | – | Osnabrück |
Additional services
Reference customers
Quality
extec is a certified master-certified company for electrical, refrigeration/air conditioning and heating technology and accompanies projects from cooling load calculation through to commissioning.
| Evidence | Osnabrück |
|---|---|
| Certified master-certified company for electrical, refrigeration/air |
History
- 2025
Delivery of an energy-autonomous climate concept with heat pump and photovoltaics for the new modular building of the municipal daycare center Eversheide in Osnabrück-Eversburg.