Construct to PassivHaus Standards and save energy and money – typically 90% compared to existing housing.

The term ‘PassivHaus’ refers to a specific construction standard for residential buildings which use very little energy and have excellent comfort conditions and in both winter and summer.

PassivHaus dwellings have:

  • Compact form, orientation and good insulation.
  • The shell of a PassivHaus is insulated to achieve a U-value better than 0.15 W/m²K; typical UK houses are constructed to 0.25 – 0.35 W/m²K.
  • The orientation of the building is designed to take advantage of passive solar gains whilst reducing overheating so providing light, airy houses.
  • The total energy demand for space heating and cooling is less than 15 kWh/m²/yr treated floor area, a typical UK house uses 55 kWh/m²/yr, older houses use much more.
  • The total primary energy use for all appliances, domestic hot water and space heating and cooling is less than 120 kWh/m²/yr.
  • Energy efficient windows and doors are installed.
  • Energy efficient ventilation and clean air. A whole house ventilation system with highly efficient heat recovery filters the air to ensure excellent indoor air quality and provides energy savings.
  • No Boiler – A PassivHaus does not need a traditional heating system or air conditioning. The small heating demand can be provided by using a small heater within the ventilation system (although there are a variety of alternative solutions).
  • Energy saving household appliances provide energy savings and reduce costs.

For further information download the BRE PassivHaus Primer or see

Formworks UK can assist in the design and realisation of your PassivHaus project.