The Protocol specification is available for manufacturers of HVAC or control equipment for evaluation purposes. If you are interested in receiving the Protocol specification please fill in this form and return it to the secretariat at the address below. Please make sure that you enter an e-mail address because the protocol specification will be sent electronically as a pdf -file to this e-mail address. This service is free of charge.
Please note that the receipt of the Protocol specification does NOT automatically allow you to apply the OpenTherm protocol to commercially available products. For that purpose you need to obtain a license from the OpenTherm Association. Please contact the secretariat for more information.