Gerald Lange Haustechnik GmbH

Liebenau, Germany

SolarBiomassHydrogenLimited company

Founded 196151-200 employees

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Profile last updated: March 27, 2026

About

Founded in 1961, Gerald Lange Haustechnik GmbH is a limited company headquartered in Liebenau, Germany with approximately 51-200 employees specializing in Solar, Biomass, Hydrogen.

Gerald Lange Haustechnik GmbH is a traditional heating, sanitation, and electrical contractor founded in 1961. The company specializes in energy-efficient building systems and renewable energy installations, including solar thermal and photovoltaic systems, heat pumps, biomass heating, controlled ventilation systems, and passive house planning and execution. With over 60 years of experience and a focus on sustainable technologies, the company serves residential and commercial clients in northern Germany, particularly in the Hannover and Bremen regions.

Headquarters

Liebenau, Germany

Founded

1961

Employees

51-200

Company type

Limited company

Focus areas

solar thermalphotovoltaicheat pumppassive housebiomass heatingventilation systemsbathroom renovationenergy efficiencyrenewable heatingsustainable building

Products & services

Business models

B2BB2C

Value chain

EngineeringConstructionO&MConsultingAdvisory

Service areas (5)

Heating Systems Installation
Installation and maintenance of heat pumps, biomass boilers, pellet heating systems, and solar thermal systems for residential and commercial buildings
Photovoltaic Systems
Design, installation and maintenance of photovoltaic systems for electricity generation from solar energy
Ventilation and Air Quality
Installation of controlled residential ventilation, industrial ventilation systems, and central vacuum systems
Passive House Planning
Planning and execution of passive house projects including energy efficiency consulting
Bathroom Renovations
Modern bathroom sanitization and accessible bathroom design