- A.O. Smith - Specialized in water heaters manufacturing, also provides services and water heaters parts.
- Altecnic - Offers thermostatic products, heating systems products, pressure reducing valves, vessels and more.
- Atmos - Manufacturers of boilers for solid fuels in Europe.
- Bial - Develops and manufactures pipe radiators and other products in the field of heating equipment.
- Blowtherm S.p.a - Specialized in the manufacturing of heating appliances and thermoventilation systems for industrial and civil use.
- Cividac - Offers pressure vessels and drums, heat exchangers & condensers.
- Cominter srl - Offers heat exchange coils and recuperators, addressing to the air conditioning, heating and refrigeration market.
- Darchem Engineering Ltd. - Provides engineered solutions to the high temperature problems of aerospace industry, offshore and nuclear markets.
- Gruppo Ferroli - Offers solutions for heating, air conditioning, hydromassage and decorative radiators.
- Heimeier - Offers heating fittings made of corrosion-resistant gunmetal.
- Hoval Liechtenstein - Hoval is a company providing a wide range of products for heating air conditioning process heat and heat recovery requirements.
- HRS Hevac - Offers a range of heating, hot water and heat transfer systems. Heat transfer specialists and is part of the HRS Group UK.
- ICI Caldaie S.p.A. - Works in the production of heat generators.
- K. TZANOS S. A. - Imports products of heating, plumbing, insulation in the Greek market.
- Krog Iversen & Co. A/S - Manufactures & markets traditional, contemporary stoves and fireplaces.
- Lamborghini Calor - Offers services for the heating, air conditioning and water treatment sectors.
- LOOS - Specialised in the area of industrial boilers.
- Nuova Imas - Works in the field of the heating, the company based in Italy.
- Pantani Divisione Tubi srl - Italian company producing low fin tubes, curved tubes, forks, condenser tubes, corrugated tubes, and more.
- Powrmatic Limited - Manufacturer of commercial and industrial heating equipment and a specialist in natural, powered and smoke ventilation.
- Remeha - Manufacturers of heating products and solutions.
- Riello Group SPA - Italian company produces burners, wall-hung and floor-standing boilers, water heater, and air conditioning systems.
- Sesino - Offers car radiators covers, followed by car radiators and the construction of the first exchangers for oleo-hydraulic plants.
- Sile S.p.A. - Specialises in the design and production of heating appliances and technological installations for domestic and industrial use.
- Termet S.A. - Provides a range of gas heating appliances.
- Tyco Thermal Controls - Offers services including heat tracing, snow melting and de-icing, specialty heating, floor heating, leak detection & more.
- Valoriani - Offers domestic ovens, accessories for domestic ovens, handicraft stoves, fire view stoves & more.
- Welland & Tuxhorn - Manufactures special control valves and hydraulic actuating systems for thermal and nuclear power stations & industrial plants.