CASE STUDY – Testing a Low Energy Building in Slovenia for Airtightness.

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SPES, Coltraco Ultrasonics exclusive distributor in Slovenia for the Portascanner® AIRTIGHT 520 were invited to test airtightness of a low energy house in construction.

The homeowner wanted to ensure that the houses construction met the low energy classifications. 

Although the house was tested by the air exchange method a couple of days before, the homeowner wished to look for microscopic leaks in the construction.


The constructed house was tested for its airtightness using the Portascanner® AIRTIGHT 520. As the device is portable and handheld, SPES were quickly and easily able to test the building.


The Portascanner® AIRTIGHT 520 worked properly and efficiently. The microscopic leak detector was able to identify small leaks 0-0.4% with the quick test function on the windows. As the window is slidable to the left, it cannot be completely airtight.

No major leaks were identified in the house which has provided the homeowner assurance that the construction has been completed correctly to low energy classifications, and proof of quality of construction.

Using the Portascanner® AIRTIGHT 520, has provided the home owner with confidence in the build.

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