
Specialist company for heating, heat pumps, air conditioning, photovoltaics, e-mobility, bathrooms and water damage service from Oberkotzau
Gemeinhardt AG HEIZUNG - SOLAR - BAD
Oberkotzau, BavariaNew on Amplifa
About Gemeinhardt AG
Gemeinhardt AG is an owner-managed family business from Oberkotzau in Upper Franconia that has been active as a specialist company for modern building and energy technology since 1967. The company plans, installs, maintains and sells heating systems (heat pumps, biomass boilers, gas and oil condensing technology), air conditioning systems, photovoltaic systems, solar thermal, electricity storage, wallboxes and bathrooms, and additionally provides a water damage service with leak detection, drying and hygiene measures. What began in 1967 as a heating installation business developed into a technology company that built its first own heat pump as early as 1975 and produced its own heat pumps in the 1980s. The service is delivered as a complete system across all trades: planning including heating load analysis, installation by in-house installation teams, maintenance and customer service as well as subsidy advisory. Customers are private individuals, commercial and agricultural businesses in the Hochfranken and Upper Franconia region. The headquarters with approx. 1,800 m² of operating building, exhibition and seminar rooms is located in Oberkotzau; the building itself has been heated since 2006 with a brine heat pump, an EVI heat pump and a pellet boiler.
- Site
- Oberkotzau
- Processes
- Heat pump installation (air-to-water, brine-to-water, water-to-water heat pumps), Biomass heating installation (pellet, log, wood chip heating), Pellet heating installation incl. buffer storage and feeding system, Log heating installation (wood gasification boiler), Wood chip heating installation (Windhager systems up to 100 kW, cascades up to 400 kW), Gas condensing boiler installation/boiler replacement/hybrid system, Oil heating boiler maintenance, repair, replacement incl. oil tank inspection/restoration/disposal, Air conditioning/split heat pump installation (cooling & heating, installation in 1–2 days)
- Materials
- Heat pumps, Biomass heating, Photovoltaics & electricity storage, Air conditioning technology, Plumbing & bathrooms, Water damage service
- Certificates
- TÜV personnel certification claims management (deployment leaders), VdS 3151 (damage mitigation)
- Founded
- 1967
- Employees
- over 60
- Industries
- Building/Mechanical services, Renewable energies, Renovation, Claims service/Insurance industry
- 01
Consultation and heating load analysis
- 02
Planning and subsidy advisory
- 03
Installation and assembly by in-house teams
- 04
Commissioning and instruction
- 05
Maintenance and customer service
- 06
Water damage service (leak detection, drying, restoration)
Services and Systems
Heat pumps
Air-to-water, brine-to-water and water-to-water heat pumps for new builds and existing buildings, including cascade solutions for large properties.
Biomass heating
Pellet, log and wood chip boilers including buffer storage and fuel storage, wood chip systems up to 100 kW or cascades up to 400 kW.
Photovoltaics & electricity storage
Systems for single and multi-family houses, commercial and agricultural applications, combined with battery storage and energy management.
Air conditioning technology
Split air conditioning units with integrated heat pump function for cooling and heating.
Plumbing & bathrooms
Bathroom renovation from planning to execution.
Water damage service
Leak detection using inspection cameras, forming gas, acoustic measurement methods and endoscopes, plus technical drying and mould removal.
Locations

Oberkotzau
DEHeadquarters, exhibition, seminar rooms, service base
- Materials
- Heat pumps, biomass, photovoltaics, air conditioning, plumbing
- Brine heat pump (operating building, since 2006)
- EVI heat pump Mitsubishi Electric
- Pellet boiler
- Photovoltaic system (since 2001)
Systems and Installations





Inside the production





Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Heat pump installation (air-to-water, brine-to-water, water-to-water heat pumps)Installation | – | – | – | – | – |
| Biomass heating installation (pellet, log, wood chip heating)Installation | – | – | – | – | – |
| Pellet heating installation incl. buffer storage and feeding systemInstallation | – | – | – | – | – |
| Log heating installation (wood gasification boiler)Installation | – | – | – | – | – |
| Wood chip heating installation (Windhager systems up to 100 kW, cascades up to 400 kW)Installation | – | – | – | – | – |
| Gas condensing boiler installation/boiler replacement/hybrid systemInstallation | – | – | – | – | – |
| Oil heating boiler maintenance, repair, replacement incl. oil tank inspection/restoration/disposalInstallation | – | – | – | – | – |
| Air conditioning/split heat pump installation (cooling & heating, installation in 1–2 days)Installation | – | – | – | – | – |
| Photovoltaic system installation (single/multi-family houses, commercial, agriculture;Installation | – | – | – | – | – |
| Solar thermal system installation (domestic hot water & heating support)Installation | – | – | – | – | – |
| Electricity storage/home power plant installation (E3/DC)Installation | – | – | – | – | – |
| Wallbox installation (11 kW / 22 kW charging power) incl. electrical installation andInstallation | – | – | – | – | – |
| Bathroom renovation (complete renovation, planning to execution)Installation | – | – | – | – | – |
| Water damage service: initial response, leak detection, repair, technical drying,Installation | – | – | – | – | – |
| Leak detection (inspection cameras, forming gas, acoustic measurement methods, moistureTesting | – | – | – | – | – |
| Heating planning and heating load analysisEngineering | – | – | – | – | – |
| Maintenance and customer service for heating, air conditioning and energy systemsInstallation | – | – | – | – | – |
4 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Brine heat pump (own operating building, heating of the ~1,800 m² operating building since 2006) | – | – | – | 2006 | Oberkotzau |
| EVI heat pump (Mitsubishi Electric, own operating building) | Mitsubishi Electric EVI | – | – | 2006 | Oberkotzau |
| Pellet boiler (own operating building) | – | – | – | 2006 | Oberkotzau |
| Photovoltaic system on the company building | – | – | – | 2001 | Oberkotzau |
Additional services
Reference customers
Quality and Certification
All deployment leaders of the water damage service are TÜV person-certified in claims management; work is carried out according to VdS Guideline 3151 of the German Insurance Association. Leak detection is performed using inspection cameras, forming gas, acoustic measurement methods and moisture measurements.
| Evidence | Oberkotzau |
|---|---|
| TÜV personnel certification claims management (deployment leaders) | |
| VdS 3151 (damage mitigation) |
History
- 1967
Founded as a heating installation business
- 1975
First own heat pump built
- 1980er
Own production of heat pumps
- 2001
First photovoltaic system installed on the company building
- 2006
Operating building (approx. 1,800 m²) heated with a brine heat pump, EVI heat pump and pellet boiler
- 2015
Introduction of the plus-energy house concept SonnenhausPlus
- 2016
German TGA Award 2016/2017 in the single-family house category for SonnenhausPlus
- 2017
50th company anniversary
- 2018
Expansion of the heat pump portfolio through iDM
- 2020
Conversion of customer seminars to online formats; presentation of Mitsubishi Ecodan/Zubadan New Generation
- 2021
Digital installation planning replaces the analogue scheduling board
- 2024
New 'G' logo introduced; employee count exceeds 60
- 2025
Renovation of showroom and meeting rooms completed