Drexel und Weiss Energieeffiziente Haustechniksysteme GmbH

Drexel und Weiss Energieeffiziente Haustechniksysteme GmbH is an Austrian building-services technology company based in Wolfurt, Vorarlberg. The company develops and manufactures energy-efficient heating, ventilation and air-conditioning (HVAC) equipment, with a particular focus on compact heat pumps, controlled residential ventilation systems and integrated building-services solutions for low-energy and passive houses. Its product range is aimed at architects, planners, installers and builders who require high-efficiency, space-saving technical systems for new-build and renovation projects. The company was founded in the late 1990s by Rudolf Drexel and Martin Weiss, combining engineering expertise in refrigeration and building technology. Over the following two decades it established itself as a specialist supplier in the German-speaking Alpine region, particularly in Austria, Germany, Switzerland and Liechtenstein, where energy-efficient construction standards are widely adopted. Its systems are typically marketed under the Drexel und Weiss brand and are known for combining heat recovery ventilation with heat pump technology in compact units. Drexel und Weiss operates as a privately held company. Its product portfolio includes compact heat pump units, ventilation units with heat recovery, domestic hot water preparation systems, and control and regulation technology for integrated building services. The company positions itself in the premium, high-efficiency segment of the HVAC market, emphasising low energy consumption, quiet operation and suitability for passive-house certification. As a specialist manufacturer, Drexel und Weiss serves a niche but technically demanding market. Its products are distributed through a network of specialist partners and installers, and the company provides planning support and technical documentation for building professionals. The brand is closely associated with the passive-house movement and with high-performance building envelopes in Central Europe.

Drexel und Weiss Energieeffiziente Haustechniksysteme GmbH was founded in the late 1990s in Vorarlberg, Austria, a region known for its strong tradition of timber construction and energy-efficient building. The founders, Rudolf Drexel and Martin Weiss, brought together expertise in refrigeration engineering and building services technology. The company name itself — 'Energieeffiziente Haustechniksysteme' — translates as 'energy-efficient building-services systems', signalling its focus from the outset. During the 2000s, the company benefited from the rapid growth of the passive-house movement in Austria, Germany and Switzerland. Vorarlberg in particular became a centre for high-performance, low-energy architecture, and Drexel und Weiss supplied compact ventilation and heat pump units for many such projects. Its products were designed to combine heat recovery ventilation with heating and hot water generation in a single compact appliance, saving space and reducing installation complexity. The company expanded its product range over the years to include a variety of compact heat pumps, ventilation units and control systems, and it developed a reputation among planners and installers for technically sophisticated, reliable equipment. It also built up a network of specialist partners across the German-speaking region and beyond. Drexel und Weiss remains a privately held Austrian company. It continues to operate from Wolfurt in Vorarlberg and to serve the market for energy-efficient building services, with a focus on renovation and new-build projects that demand high efficiency and low energy consumption. The brand is closely associated with the passive-house standard and with the broader Central European market for sustainable building technology.

• 2010

  Established a network of specialist partners across Austria, Germany and Switzerland.

• 2000

  Expanded product range to include compact heat pump and ventilation combination units for low-energy buildings.

• 1998

  Company founded in Vorarlberg, Austria by Rudolf Drexel and Martin Weiss.

Premium, high-efficiency specialist in compact HVAC systems for low-energy and passive-house construction.

• Compact heat pump and ventilation combination units

  Integrated appliances combining heat recovery ventilation with heat pump technology for heating and domestic hot water.

• Controlled ventilation units with heat recovery

  Residential ventilation systems designed for passive-house and low-energy buildings.

• Building-services control technology

  Control and regulation systems for integrated HVAC operation.

1. 1Drexel und Weiss Energieeffiziente Haustechniksysteme GmbHwikidata.org
2. 2Drexel und Weiss official websitedrexel-weiss.at