Projects

Projects

Howard WestWest Melbourne Completed View Project
ECHO.1Hawthorn 2024 View Project
ECHO.2Abbotsford Coming Soon View Project
Menu


Air Sealing

The Passivhaus and Passivhaus Low Energy standards test the seal of a building using a blower door test during construction. They require an air change rate of less than 0.6 and 1.0 ac/h respectively at 50Pa.

By comparison, a CSIRO report (The Evaluation of the 5-Star Energy Efficiency Standard for Residential Buildings, December 2013), published air-tightness results for 20 houses in Melbourne; with an average result a massive 19.7 ac/h@50pa (that’s a “natural” building infiltration/leakage rate of 1 air change per hour 24/7, all year round).

A building with a high NatHERS rating will still consume a large amount of energy if conditioned air is constantly being lost to the outside.