The OpenTherm Association has several groups that members can participate in. We would like to inform the right contacts in your organisation for relevant activities.


As a member of the OpenTherm Association you have the right to develop, produce and market products that are OpenTherm compatible and that are marked as such, i.e. by showing the OpenTherm name and logo.

Prior to introducing such products to the market you will require a licence from the OpenTherm Association. This licence can be obtained by completing the proper procedures that can be found on the member area on the OpenTherm website (www.opentherm.eu).

As a member you also have the right to attend General Meetings (GM) and to appoint a representative in the Technical Committee (TC), that consists of most of our technical expert members.

We will allow you access to all the information on our OpenTherm website. We will provide you with a personal login-code which will enable you to provide login-codes to persons nominated by you in your company.
 The yearly membership fee is € 2.750,00 (excl. VAT), till the 31st of December. The membership will automatically be continued every year, per the 1st of January. Your membership will be effective immediately after you paid the invoice. The only additional costs are related to testing of prototypes of OpenTherm products by KIWA GASTEC in the Netherlands.

You can terminate your membership by written notice anytime, however the annual fee will still be applicable for the remainder of that year.


We refer to our latest “articles of association”, dated 27th August 1996.