- ACV
- Alpha
- Ambirad
- Amptec
- Andrews
- Ariston
- Atag
- Atmos
- B
- Baxi
- Baxi Commercial
- Buderus & Camray
- C
- Chaffoteaux
- D
- Drugasar
- E
- F
- Ferroli
- G
- Glow-Worm
- Grandee
- Grant
- H
- Halstead
- Heatline
- I
- Ideal
- Intergas
- J
- Jaguar
- Johnson & Starley
- K
- Keston
- Kinder
- L
- M
- P
- Potterton
- Powrmatic
- Protherm
- R
- Remeha
- S
- Saunier Duval
- Sime
- T
- Trianco
- V
- Vaillant
- Viessmann
- Vokera
- W
- Warmflow
- Worcester Bosch
- Zanussi