Blower Door Test
Images from a recent "Indoor Air Quality" inspection performed by GTA Inspectors in the UAE. The test used is called "Blower Door Test".
A blower door is a powerful fan that a trained energy professional temporarily mounts into the frame of an exterior doorway in your home. After calibrating the device, the fan pulls air out of the house, lowering the air pressure inside. The higher outside air pressure then flows in through all unsealed gaps, cracks and openings such as gaps, cracks, or wiring penetrations, which is checked through a smoke test. These penetrations represents a source of air leak and moisture penetration that causes many issues, including but not limited to damages to walls, ceiling and furniture, mold formation and energy waste
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