Certified according to DIN ISO 9001 : 2015


We value quality management and energy efficiency

Here you can find our certificates and performance records

As an internationally operating company, Langen Feuerungsbau GmbH attaches great importance to the subject of quality management. Our certificates help to ensure the safety of our products and strengthen our competitive position. Thanks to our systematic quality management, we are better able to respond to complex requirements and the changes in the market, recognise opportunities and work more efficiently. Our customers also appreciate this.

For this reason, we have all the necessary certificates in steel construction and welding technology. Here you can find our certificates for you to read. Call us or send us an e-mail if you have any questions.

  • DIN EN ISO 9001 as the most important standard in quality management - cross-industry and valid worldwide
  • DIN EN ISO 3834 for welding quality requirements and principles for quality assurance of fusion welded components and constructions

Energy efficiency at Langen Feuerungsbau: Our contribution to climate protection

2021, Langen Feuerungsbau has had an energy consultation carried out by TÜV - sponsored by the state of NRW. The resulting suggestions for improvement will help to improve our company's energy balance and reduce CO2 emissions in the coming years. In this way, we can also make an important contribution to climate protection. Investments and repairs are already being planned and carried out with a view to achieving these goals. One priority investment is to replace the old oil-fired fan heaters in production and the gas heaters in the office area. These will be replaced by modern ventilation and heating technology based on air-source heat pumps and solar by the end of 2022, making this area CO2-neutral in the future.

Further plans include the renewal of the entire lighting with modern LED technology with daylight-dependent control.