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Air Leakage Calculator

Air leakage refers to the unwanted flow of air into and out of a building through cracks, gaps, and other openings in the building envelope.

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Duct Leakage Calculator

Duct leakage refers to the loss of conditioned air through gaps, cracks, or disconnections in the ductwork of heating, ventilation, and air conditioning (HVAC) systems.

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SLA Calculator

Specific Leakage Area is a building’s leakiness metric. All you need is a blower door, our calculator and some basic house info.

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