Passivhaus is the leading international low energy design standard.

The Passivhaus Standard requires:

•a maximum space heating and cooling demand of less than 15 kWh/m2.year or a maximum heating and cooling load of 10W/m2.
•a maximum total primary energy demand of 120 kWh/m2/year.
•an air change rate of no more than 0.6 air changes per hour @ 50 Pa.
To achieve the Passivhaus Standard in the UK typically involves:

•very high levels of insulation
•extremely high performance windows with insulated frames
•airtight building fabric
•'thermal bridge free' construction
•a mechanical ventilation system with highly efficient heat recovery

Examples
Denby Dale House (118m2 three-bed detached house)

First UK Passivhaus to be built with cavity wall construction.
www.greenbuildingstore.co.uk/page--denby-dale-passivhaus.html

Y Foel House (99.52m2 detached house)

passivebuild.co.uk/



www.passivhaus.org.uk/

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