
Engineering office for planning and construction supervision of building technical electrical systems in the Rhine-Main area
AH Ingenieurgesellschaft mbH für Elektrotechnik
Klein-WinternheimNew on Amplifa
About AHI
AHI Ingenieurgesellschaft mbH (AHI) is an electrical engineering planning office located in Klein-Winternheim near Mainz. The company covers the entire range of electrical engineering for buildings: energy and heavy current system technology including photovoltaics, information and communication technology, lighting technology, security technology such as fire alarm and voice alarm systems, electrical installation technology and room automation with KNX/DALI/EnOcean, conveyance technology for elevators, and lightning and surge protection. Furthermore, AHI offers BIM planning (Building Information Modelling), cost and schedule management with the tools iTWO/ARRIBA and Microsoft Project, as well as quality management. The range of services includes consulting, planning, and construction supervision in all phases of performance. Among the clients are Merck, Boehringer Ingelheim, ZDF, SWR, Deutsche Bundesbank, Universitätsmedizin Mainz, and Stadtwerke Mainz. The office, founded in 1987 (year not officially documented) and originally located in Mainz-Drais, has been operating since moving to Klein-Winternheim in the Rhine-Main area and handles projects throughout Germany.
- Site
- Klein-Winternheim
- Processes
- Planning of energy and heavy current system technology (Medium/Low voltage switch and, Planning of information and communication technology (IT/TK networks, call, speech, and, Planning of lighting technology (interior, exterior, and safety lighting systems), Planning of security technology (fire alarm systems, voice alarm, intrusion detection systems,, Planning of electrical installation technology and room automation (KNX/DALI/EnOcean bus systems), Planning of conveyance technology (passenger and goods elevators, platform lifts, new, Planning of lightning and surge protection (external/internal lightning protection, grounding, BIM working method (Building Information Modelling, 3D building model for electrical installations)
- Materials
- Energy and Heavy Current System Technology, Information and Communication Technology, Lighting Technology, Security Technology, Installation Technology and Room Automation, Conveyance Technology, Lightning and Surge Protection, Building Information Modelling
- Certificates
- ISO 9001:2015, DIN 14675-2:2020, IATF 16949, ISO 14001
- Industries
- Office and administrative buildings, Health and care facilities, Industry and commercial use, Sport and culture, Educational institutions, Residential and hotel buildings
- 01
Consulting and project information
- 02
Design and preliminary planning with coordination of authorities, energy
- 03
Detailed planning and quantity estimation
- 04
Bill of quantities, submission, and tendering
- 05
Construction supervision and measurement
- 06
Cost and schedule control until final invoice
Services and Planning Methods
Energy and Heavy Current System Technology
Planning of MS/NS switch and distribution systems, reactive power compensation, harmonic filters, NU/SV/UPS self-supply, and photovoltaic systems.
Information and Communication Technology
Planning of passive neutral IT/TK networks as well as call, speech, and sound reinforcement systems.
Lighting Technology
Planning of interior, exterior, and safety lighting systems.
Security Technology
Planning of fire alarm systems, voice alarm, intrusion detection systems, access, and video surveillance.
Installation Technology and Room Automation
Planning of substations, wiring systems, and KNX/DALI/EnOcean bus systems.
Conveyance Technology
Planning of passenger and goods elevators, platform lifts, conversions, and modernizations.
Lightning and Surge Protection
Planning of external and internal lightning protection, grounding systems, and potential equalization.
Building Information Modelling
Representation of electrical installations in the 3D building model with integrated digital system coordination.
Cost and Schedule Management
Continuous budget and schedule control with iTWO (formerly ARRIBA) and Microsoft Project.
Location

Klein-Winternheim
DEHeadquarters / Planning Office
- Materials
- Energy and heavy current technology, IT technology, lighting, security technology, room automation, conveyance
- iTWO/ARRIBA
- Microsoft Project
- CAD and BIM planning tools
Reference Projects





Inside the production





Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Planning of energy and heavy current system technology (Medium/Low voltage switch andEngineering | – | – | – | – | – |
| Planning of information and communication technology (IT/TK networks, call, speech, andEngineering | – | – | – | – | – |
| Planning of lighting technology (interior, exterior, and safety lighting systems)Engineering | – | – | – | – | – |
| Planning of security technology (fire alarm systems, voice alarm, intrusion detection systems,Engineering | – | – | – | – | – |
| Planning of electrical installation technology and room automation (KNX/DALI/EnOcean bus systems)Engineering | – | – | – | – | – |
| Planning of conveyance technology (passenger and goods elevators, platform lifts, newEngineering | – | – | – | – | – |
| Planning of lightning and surge protection (external/internal lightning protection, groundingEngineering | – | – | – | – | – |
| BIM working method (Building Information Modelling, 3D building model for electrical installations)Engineering | – | – | – | – | – |
| Project management/Quality management, cost and schedule management (iTWO/ARRIBA, Microsoft Project)Engineering | – | – | – | – | – |
Additional services
Reference customers
Quality and Certification
AHI is certified according to DIN EN ISO 9001:2015 (TÜV Rheinland); the QM system defines all operational processes from project information to the final invoice. A certification according to DIN 14675-2:2020 exists for the planning and acceptance of fire alarm and voice alarm systems.
| Evidence | Klein-Winternheim |
|---|---|
| ISO 9001:2015 | |
| DIN 14675-2:2020 | |
| IATF 16949 | |
| ISO 14001 |
Company History
- k. A.
Foundership of AH Ingenieurgesellschaft by Dieter Arnold and Michael Hensel in Mainz-Drais
- k. A.
Relocation of headquarters from Mainz-Drais to Klein-Winternheim
- k. A.
25 years AHI – anniversary with a major customer event
- 2025
Renewal of certificates ISO 9001:2015 (valid until 25.11.2028) and DIN 14675-2:2020 (valid until 10.09.2027)