Air Input Systems
Why is it necessary to have air input?
When air is extracted from a kitchen, replacement air will be drawn into it from outside. In order for a kitchen ventilation system to work correctly, both the extract and fresh air flows must be considered and planned for.
If fresh air is not introduced into the kitchen via a dedicated ventilation system, all the air extracted through the canopy will have to be made up of natural infiltration air coming in through any other room opening, (ie doors, windows etc).
The recommendations for natural infiltration air are for 15 to 20% of the total air extracted. This will maintain a negative pressure in the kitchen and help prevent odours escaping into adjacent areas.
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