Kitchen Ventilation

Commercial and domestic kitchen extraction: hood blowers, grease loading, make-up air, duct velocity and cleaning intervals.

Manometer showing negative pressure difference across a doorway
By longwell / August 21, 2026 / Fan Engineering Guides

Positive vs Negative Pressure Ventilation

Room pressure decides which way air leaks through every gap in the bui...

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Range hood blower motor being removed from a cooker hood canopy
By longwell / August 21, 2026 / Fan Engineering Guides

Range Hood Blower Motor Replacement

A range hood that stops pulling air is not always a dead motor. Grease...

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