| BETTRAY ENERGIE Ingenieurgesellschaft mbh Architect / Professional designer Mülheimer Str 4 51145 Köln Germany Telephone: 02203 / 997335 Fax: 02203 / 997336 Homepage: paul.bettray@bettray-energie.de Email: |
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A wealth of Passive House knowledge.
Where Passive House stakeholders meet.
Mid-year event 23—25 June 2023
Main event 10—12 November 2023
Int'l Passive House Conference
