Why use designPH with PHPP?
designPH must be used in conjunction with PHPP to fully design and validate a Passive House project.
designPH provides the 3D modeling and preliminary energy analysis, while PHPP offers the detailed verification and compliance checks.
Together, they form a complete workflow:
1. SketchUp modeling with designPH
2. Preliminary analysis inside designPH
3. Export to PHPP for detailed validation
Compatibility
designPH versions are compatible with PHPP 8.5, PHPP 9 and PHPP10 (depending on license purchased).
Exports are saved as PPP files, which can be imported into PHPP for refinement.
Spreadsheet software is required (Microsoft Excel 2007+ on Windows, or compatible versions of LibreOffice/OpenOffice on Mac/Linux).
Refer to your PHPP handbook and system requirements for details.
What PHPP Calculates
Annual heating demand [kWh/(m²a)] and peak load [W/m²]
Annual cooling demand [kWh/(m²a)] and maximum cooling load (if cooling systems are used)
Summer comfort: frequency of overheating [%]
Annual renewable primary energy (PER) and total primary energy demand (PE)
Annual renewable energy gains [kWh/(m²a)]
Key Advantages of PHPP
Energy balance calculations in Excel format
Easy, flexible data entry
Verified, accurate results
Comprehensive manual with efficiency tips
Interfaces for data import/export (including from designPH)
Suitable for new builds and retrofits
About PHPP (Passive House Planning Package)
The Passive House Planning Package (PHPP) is the trusted energy balance and planning tool for designing highly efficient buildings and refurbishments. Used by thousands of architects and planners worldwide, PHPP combines:
Reliability — validated accuracy, proven in practice
Flexibility — Excel-based tool with direct data input and easy editing
Continuous development — updated with new methods and features
Certification-ready — supports Passive House and EnerPHit retrofits
PHPP at a Glance
Since its introduction in 1998, PHPP has been continually improved with modules for:
Heating & cooling balances (annual and monthly methods)
Heat distribution, supply, and electricity demand
Window & shading design
Ventilation (residential & large buildings)
Cooling & dehumidification
Renewable energy integration
EnerPHit retrofit verification
Scientific monitoring has consistently shown that PHPP results align closely with measured energy use when projects are carefully planned — ensuring no “performance gap.”