
Heating, ventilation, plumbing and solar technology: consulting, planning, installation, maintenance and emergency service from Lohne.
Otto Sieve GmbH
LohneNew on Amplifa
About us
Otto Sieve GmbH is a master-craftsman business founded in 1967 and based in Lohne, specializing in heating, ventilation, plumbing and solar technology. The family-owned company offers the full spectrum of modern building services: from energy-efficient heating systems with heat pumps and gas boilers to radiators and underfloor heating, as well as bathroom design and solar and heat pump technology. In the field of ventilation & climate, the company plans and installs controlled residential ventilation, central and decentralized ventilation systems with heat recovery, single-room ventilation units and room air conditioners. The offering is complemented by subsidy consulting (BEG), maintenance, repair and servicing, an emergency and breakdown service, gas line inspections as well as pipe cleaning, burst pipe repair and structural drying. The company supports new construction projects, renovations and modernizations from consulting and planning through to execution, and works with manufacturers such as Buderus/Bosch Thermotechnik, Wolf, Helios, Vallox, Dornbracht and Villeroy & Boch.
- Site
- Lohne
- Processes
- Heating installation (gas boilers, radiators, underfloor heating), Heat pump installation, Plumbing installation / Bathroom & Wellness, Solar technology installation (flat-plate collector, tube collector), Ventilation system construction (controlled residential ventilation, central/decentralized, Installation of ceiling fans, air heaters, central vacuum systems, room air conditioners, Air conditioning installation, Maintenance, repair & servicing of heating, plumbing and ventilation systems
- Materials
- Consulting & Planning, Installation & Assembly, Maintenance & Service
- Founded
- 1967
- Industries
- Building services / HVAC & plumbing trades, Residential construction / New build & renovation
- 01
Consulting and energy/subsidy consulting (BEG)
- 02
Planning
- 03
Installation and system construction
- 04
Maintenance, inspection, repair
- 05
Emergency and breakdown service
Services & Technology
Consulting & Planning
Individual planning of building services projects for new construction, renovation and modernization, including BEG subsidy consulting.
Installation & Assembly
Installation of heating, ventilation, plumbing, climate control and solar systems as well as heat pumps.
Maintenance & Service
Regular maintenance, repair, gas line inspection, pipe cleaning and emergency service for reliable system operation.
Locations

Lohne
DEHeadquarters / Operations
- Materials
- Heating, ventilation, plumbing and solar technology
- Modern machinery and vehicle fleet
- Extensive materials and spare parts warehouse
- Structural drying equipment
Service Areas




Inside the production





Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Heating installation (gas boilers, radiators, underfloor heating)Assembly | – | – | – | – | – |
| Heat pump installationAssembly | – | – | – | – | – |
| Plumbing installation / Bathroom & WellnessAssembly | – | – | – | – | – |
| Solar technology installation (flat-plate collector, tube collector)Assembly | – | – | – | – | – |
| Ventilation system construction (controlled residential ventilation, central/decentralizedAssembly | – | – | – | – | – |
| Installation of ceiling fans, air heaters, central vacuum systems, room air conditionersAssembly | – | – | – | – | – |
| Air conditioning installationAssembly | – | – | – | – | – |
| Maintenance, repair & servicing of heating, plumbing and ventilation systemsAssembly | – | – | – | – | – |
| Emergency service for faults and failuresAssembly | – | – | – | – | – |
| Gas line inspection (leak and function testing)Testing | – | – | – | – | – |
| Pipe cleaning & pipe inspectionAssembly | – | – | – | – | – |
| Repair of burst pipes and water damage / leak detectionAssembly | – | – | – | – | – |
| Structural dryingAssembly | – | – | – | – | – |
| Subsidy consulting (BEG) and energy consultingEngineering | – | – | – | – | – |
| Consulting, planning and execution of building services projects (new construction, renovation,Engineering | – | – | – | – | – |
Additional services
Reference customers
History
- 1967
Founded by Otto Sieve as a family business; over 50 years of activity in heating, ventilation, plumbing and solar technology.