Passivhaus Affiliate

Design Support

A clear understanding of the calculations and predictions involved in low-energy building relies upon the use of accurate modelling software. Based on dynamic thermal simulations validated by data gathered from hundreds of low-energy buildings, the German Passive House Planning Package (PHPP) is the software used to calculate energy use and CO₂ emissions. PHPP’s level of sophistication enables it to take into account a wide range of variable characteristics which affect heat loss and subsequent energy use, allowing for a superior fit between predicted energy use and real-world performance.

Passive House Planning Package (PHPP)

ThePassive House Planning Package (PHPP)is a design tool produced by the Passivhaus Institut for use by building architects and designers. PHPP incorporates the energy specifications for quality-approved Passivhaus buildings from the Institut in a manual and CD-Rom. PHPP contains a series of tools for:


• Designing comfortable ventilation

• Calculating the heat load

• Summer comfort calculations

The latest version of the software, PHPP 9, is now available, offering many benefits over its predecessor. PHPP 9 includes facilitated data entry and incorporates the latest results on the integration of renewables in building energy concepts. It also includes further findings from the Passivhaus Institut’s recent research on high performance buildings in various regions in the world; additional calculations combined with newly validated algorithms ensure suitability for all climates, including those with cooling and dehumidification requirements.

Suitable for both residential and many non-residential applications, PHPP is supported byCertified Training Coursesto help you get the most from this software.

Price: £105.00 - £160.00 + VAT for PHT & AECB members



designPHis the new interactive and graphically oriented input interface for PHPP. It is a plugin for the popular 3D design software SketchUp and is available for Apple and Windows operating systems. A full version of the PHPP software is required to be able to use it. SeedesignPH.orgfor full details of the features and software requirements.

Please note that if you do not have a copy of PHPP you cannot purchasedesignPHon its own. Prices start from £170.

Price: £200.00 - £355.00 + VAT for PHT & AECB members