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The Tool PHErde is intended to serve passive house planners as an aid for the design and calculation of brine-to-earth heat exchangers (EWÜ). The corresponding article in protocol volume No. 43 contains information on practical experience with brine-to-earth heat exchangers, as well as sample calculations and application notes for the design tool PHErde.

PH Erde Tool

If you are interested in the PHErde programme, please write an e-mail to: mail[at]

This tool was developed within the framework of the “Arbeitskreis kostengünstige Passivhäuser - AK 43”.

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planning/pherde.txt · Last modified: 2022/04/25 12:35 by