Meibes System-Technik GmbH
- ABA Beul
- AFRISO
- Allmess
- Alpha-InnoTec
- aquatechnik
- Arbonia
- ATAG Heizungstechnik
- Belimo
- BEMM
- Biral
- Bosch Thermotechnik
- Brötje
- Buderus
- Caleffi
- Carrotherm
- Centrotherm
- COSMO
- Danfoss
- DeLonghi
- Dimplex
- Düker
- ELCO
- Fränkische Rohrwerke
- Frese Armaturen GmbH
- Geba
- Geberit
- Giacomini
- GR Heiz-/Kühlsysteme
- Grundfos
- GS Wärmesysteme
- Heliotherm
- Herz Armaturen
- Honeywell
- Hoval
- Hummel
- IMI Hydronic Engineering
- JRG
- Junkers
- KAN-therm
- Kemper
- Kermi
- Kieback&Peter
- Lithotherm
- LTM
- Meibes System-Technik
- Neutraler Hersteller
- NIBE Systemtechnik
- Novelan
- Oventrop
- Panasonic
- Pollmann Technik
- Prolux
- Purmo
- Rehau
- Rettig Austria
- Robur
- Rossweiner
- ROTEX Heating Systems
- Samson
- SANHA
- Schlüter-Systems
- Siemens Building Technologies
- Simplex Armaturen & Systeme
- Stiebel Eltron
- Systemair
- Taconova
- Tecalor
- TECE
- TROX
- Uponor
- Vaillant
- Vallox
- Victaulic
- Viega
- Viessmann
- Weishaupt
- Westaflex
- Wieland-Cuprotherm
- Wolf
- Zehnder
- Zewotherm
