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Draught and air leakage testing

A blower door test measures exactly how leaky your home is and helps find where the air is getting in. It shows whether draught sealing has actually worked.

A common sign

“We’ve sealed everything we can find, but the house is still draughty.”
Some leaks are hard to find by feel. A blower door test shows how much air is getting through, and helps track down where.

About draught and air leakage testing

Measure the leaks, don’t guess them.

During a blower door test, a powerful fan is fitted to an outside door to pull air out of the house. That draws outside air in through every gap, which makes leaks easier to find and lets the specialist measure how airtight the home is.

Testing before and after draught sealing shows how much difference the work made. It’s also useful when building or renovating to check the result.

Helps with

Draughts you can’t locate

Helps with

Checking draught sealing has worked

Helps with

New homes and major renovations

Worth knowing

Testing before sealing gives you a starting point. Testing again afterwards shows you exactly what the work achieved.

Air leakage testing specialists

Find air leakage testing specialists near you.

A few of the 16 listed across Australia

Work by Sapien.

Sapien

4.8 52 Google reviews

Draught and air leakage testingDraught and weather sealing

Based in Williamstown North

A weatherboard home in regional Victoria at golden hour, with solar panels on the roof.

Australian Energy Assessments

5.0 295 Google reviews

Home Energy Rating (NatHERS) for new homesHome Energy Rating assessmentsHome energy assessments and auditsDraught and air leakage testingThermal imaging and insulation scans

Based in Melbourne

A renovated brick home with solar panels on a dark roof and a heat pump hot water unit beside the fence.

Cosy Concepts

5.0 34 Google reviews

Thermal imaging and insulation scansDraught and weather sealingCeiling and roof insulationCeiling insulation top upUnderfloor insulationDraught and air leakage testing

Based in Keilor East

A sage green weatherboard cottage with a picket fence and solar panels, frost on the lawn.

Passive Edge Homes

5.0 12 Google reviews

Ceiling and roof insulationWall insulationTriple glazed windowsHeat recovery ventilationRooftop solar installationDraught and weather sealingDraught and air leakage testing

Based in Williamstown

A cedar clad contemporary home at dusk with solar panels on the roof and a lit stone path.

Your PassivHaus

5.0 7 Google reviews

Home energy assessments and auditsHeat recovery ventilationHeat pump hot water systemsDucted reverse cycle heating and coolingTriple glazed windowsInduction cooktop installationDraught and air leakage testingDraught and weather sealingHome EV charger installation

Based in Holt

More in energy assessments

Other upgrades in this category.

A professional home energy assessment shows where your house loses heat and power, so you don’t waste money on upgrades you don’t need.

Before you choose an installer

See our guides on planning your upgrades.

All guides

Related goal

Ready to stop the draughts?

See the upgrades that stop draughts and heat loss, once you know where the air is getting in.