Membership is open to all companies and organizations which are active in the manufacture, distribution or installation of heating systems and components.

The OpenTherm communication protocol is primarily designed to control modulating heating appliances. The protocol is available to members of the OpenTherm Association only.

If you have any other questions, after having read the information provided on this website, the OpenTherm Association’s secretariat can provide more information on the OpenTherm communication standard and the compatible products.

Series FE825YA Small Footprint “N-Shape” Design Reduced Pressure Zone Assemblies are used to protect against high-hazard (toxic) fluids in water services to industrial plants, hospitals, morgues, mortuaries, and chemical plants. They are also used in irrigation systems, boiler feed, water lines, and other installations requiring maximum protection. They feature a bronze body and threaded ball valve shutoffs. Maximum Working Pressure: 175 psi (12.1 bar).

OpenTherm is a non-manufacturer-dependent system of communication between modulating HVAC appliances and room thermostats. It consists of a communication protocol and an interface specification.

Watts EMEA Holding B.V. is a European division of the international holding Watts Water Technologies. Watts is a leading manufacturer and provider of products and solutions used in water protection, sanitation, HVAC, instrumentation and climatic electronic.

Series FE825YA Small Footprint “N-Shape” Design Reduced Pressure Zone Assemblies are used to protect against high-hazard (toxic) fluids in water services to industrial plants, hospitals, morgues, mortuaries, and chemical plants. They are also used in irrigation systems, boiler feed, water lines, and other installations requiring maximum protection. They feature a bronze body and threaded ball valve shutoffs. Maximum Working Pressure: 175 psi (12.1 bar).