Generic filters
Exact matches only
Filter by Custom Post Type


Gas-powered tube heaters operate decentrally, generating heat where it is needed. A tube heater emits infrared radiation through its long radiant tubes. Schwank dark radiators are characterized by innovative detail solutions and the highest quality standards "Made in Germany". The materials used are consistently designed for longevity and efficient heaters.

The calorSchwank tube heater is the premium model amongst Schwank tube heaters. Thanks to its intelligent burner technology, high-quality reflector insulation as well as highly reflective reflectors, it belongs to the most efficient heaters of its class. In contrast to the basic model infraSchwank, this tube heater consumes approximately 20% less energy. In spite of its low material strength, the insulation used achieves the fourfold effect as compared to conventional insulation materials. These energy efficient heaters ensure a high ErP value and guarantee economical operation.

High efficiency at low energy costs

  • Seasonal energy efficiency of up to 86.9%
  • Radiation factor of up to 70.2%*
  • Full modulation as standard
  • “Made in Germany” quality
  • Ceramic insulation
  • Long laminar flame
  • Whisper-Jet pressurised burner system for individual systems
  • Extremely quiet operation
  • Fast and simple installation
  • * Calculated on the basis of Directive 2015/1188 of the European Commission on the calorSchwank D 30/M+ U tube heater model

calorSchwank U


calorSchwank L

calorSchwank LL

In this section you will find product brochures, technical information and press articles about calorSchwank.
calorSchwank D L – Brochure EN
1 file(s) 7 downloads
calorSchwank, Tube heaters 12. February 2019
calorSchwank D LL – Brochure EN
1 file(s) 0 download
calorSchwank, Tube heaters 12. February 2019
calorSchwank – Effizienzwerte [ErP]
1 file(s) 19 downloads
calorSchwank, Tube heaters 5. December 2018
infraSchwank calorSchwank L – Manual EN
1 file(s) 13 downloads
calorSchwank, infraSchwank 12. February 2019
infraSchwank calorSchwank U – Manual EN
1 file(s) 6 downloads
calorSchwank, infraSchwank 12. February 2019
calorSchwank D U – Brochure EN
1 file(s) 2 downloads
calorSchwank, Tube heaters 12. February 2019


The first system with our new high efficiency deltaSchwank tube heater has been successfully put into operation.

Our highly efficient deltaSchwank dark spotlight has convinced another jury. This time because of its special design.

Since 01.01.2018, the ErP Directive has also applied to hall heating systems such as tube heaters. Systems from SCHWANK achieve excellent values here. Find out everything you need to know about the requirements of the new Ecodesign directive below.

Application reports


It was neither an engineer nor a physical measurand that impressed the discounter giant ALDI in its decision making per tube heater, it was spinach. Because this green leafy vegetable is one of the most sensitive vegetables to climatic influences during storage.

Founded in 1994 in the USA, the mail order company has since risen to become the world’s largest Internet retailer. Originally, Amazon concentrated on selling books, but now there is almost nothing that Amazon cannot supply.

As with many refurbishment projects, the first realisation was that the existing heating system for the production halls and warehouses was too expensive and that it did not meet the requirements for comfort and heating performance anymore.