Air tightness tests use a fan operated blower door to assess how leaky your building is by measuring how many volumes of air your building leaks. For example, if you get 10 air changes per hour at 50 Pascals (ACH50), that means you are losing 10 times the volume of air in your house per hour and in effect, you are heating your house ten times an hour.  In a recent study, it was found the average house in Australia measured to be 17 ACH50.  For reference, since 2019, the Australian building code performance standards require an air tightness of 10 air permeability that converts to around 10 ACH50 in domestic situations.

Our standard service costs $1200 plus GST, it includes:

• Initial blower door test, measure initial Ach50,
• Examination of building with a thermal camera,
• Filling of gaps, with an aim to improve the initial ACH50,
• Energy assessment,
• Final blower door test and air tightness certificate, indicating your home's final ACH50.

We also offer stand alone blower door tests, with thermal imaging and certificate at a cost of $550 plus GST, for the purpose of assessing air tightness for Passive House certification or during the construction phase of energy efficient homes.

These fees are accurate for houses under 4oo square metres.  If your home is larger, please contact us for a quote.

Travel costs may be incurred if you are not around Launceston.