A

ACV

Alpha

Ambirad

Amptec

Andrews

Ariston

Atag

Atmos

B

Baxi

Biasi

Bradford White

British Gas

Broag Remeha

Buderus & Camray

C

Chaffoteaux

D

Daikin

Daxom

Dimplex

Drugasar

E

ECA

Eco Hometec

EHC

EHS

Elco

Elm Leblanc

Elnur

EOGB

Evinox

F

Ferroli

Fiamma Giro

Firebird

Fondital

G

Gabarron

Geminox

Gerkros

Glow-Worm

Grandee

Grant

H

Halstead

Hamworthy

Heatline

Hermann

I

ICI Caldaie

Ideal

Intergas

Immergas

J

Jaguar

Johnson & Starley

Junkers Bosch

K

Keston

Kinder

L

Laars

M

Main

Malvern

Maxol

MHG

MHS

Mikrofill

Mizudo

Mixergy

Morco

Myson

N

Navien

Nu-Way

P

Potterton

Powermax

Powrmatic

ProCombi

Protherm

R

Ravenheat

Radiant

Remeha

Riello

Roc

S

Sabre

Savio

Saunier Duval

Servowarm

Sime

Slantfin

Strebel

Strom

T

Thermaflow

Thorn

Trianco

U

U.S. Boiler Company

Utica

V

Vaillant

Valor

Viessmann

Vokera

W

Warmflow

Warmhaus

Weil-McLain

Wickes

Worcester Bosch

Z

Zanussi