GS Wärmesysteme GmbH
- ABA Beul
- AFRISO
- Allmess
- Alpha-InnoTec
- aquatechnik
- Arbonia
- ArgillaTherm
- ATAG Heizungstechnik
- Belimo
- BEMM
- Biral
- bluMartin
- Bosch Thermotechnik
- Brötje
- Buderus
- Caleffi
- Carrotherm
- Centrotherm
- COSMO
- Danfoss
- DeLonghi
- Dimplex
- Düker
- ELCO
- Flamco
- Fränkische Rohrwerke
- Frese Armaturen
- Geba
- Geberit
- Georg Fischer
- Giacomini
- GR Heiz-/Kühlsysteme
- Grundfos
- GS Wärmesysteme
- Helios Ventilatoren
- Heliotherm
- Henrad
- Herz Armaturen
- Hoval
- Hummel
- IMI Hydronic Engineering
- Junkers
- KaMo
- Kampmann
- KAN-therm
- Kermi
- Kieback&Peter
- Lindner
- Lithotherm
- LTM
- Meltem
- NIBE Systemtechnik
- Novelan
- Oventrop
- Panasonic
- Pluggit
- Pollmann Technik
- Prolux
- Purmo
- Rehau
- Resideo
- Rettig Austria
- Robur
- Rossweiner
- ROTEX Heating Systems
- Roth-Werke
- Samson
- SANHA
- Schlüter-Systems
- Schütz
- Siemens Building Technologies
- Simplex Armaturen & Systeme
- Stelrad
- Stiebel Eltron
- strawa
- Systemair
- Taconova
- Tecalor
- TECE
- TROX
- Uponor
- Vaillant
- Vallox
- Victaulic
- Viega
- Viessmann
- Watts Industries
- Weishaupt
- Westaflex
- Wieland-Cuprotherm
- Wolf
- Zehnder
- Zewotherm
