Passive House Planning Package

There is no official “recipe” to achieving the passive house standard, every project is unique and all passive houses have to be modelled with the PHPP. Developed by the world renowned Passivhaus Institut the PHPP is a clearly structured design software package, based on a series of extensive and interlinked data sheets. It is used by architects, engineers, consultants and designers etc. to assist in the careful design and modeling of any building to achieve the passive house standard – in short all passive houses have to be modelled with the PHPP.

The PHPP looks at the building fabric and key components in a passive house and includes tools for:

  • Calculating the U-values of components with high thermal insulation
  • Calculating energy balances
  • Designing comfort ventilation
  • Calculating the heat load (including Irish climatic data)
    • At the moment the software includes climatic data from two locations in Ireland, later this year that will be increased to 14 locations.
  • Summer comfort calculations
    • Many other useful tools for reliable design of passive houses

The passive house standard is a specific construction standard for buildings (any building) which results in good thermal comfort conditions all year round without traditional space heating systems and without active cooling. The energy requirement of passive house is:

  • Annual space heating requirement of 15kWh/m2a treated floor area
  • The upper limit for total primary energy demand for space and water heating, ventilation, electricity for fans and pumps, appliances and lighting not exceeding 120kWh/m2a, regardless of energy source; and
  • The air leakage test results must not exceed 0.6 air changes per hour using 50 Pascal over pressurisation and under pressurisation testing.

Check out our newly released BER Estimator.