What sort of capacity should a new cooker hood have?
Capacity depends largely on the size of the kitchen. A good rule of thumb is that the hood should be able to replace the air 10 to 20 times an hour. For instance, if a kitchen measures 4 x 4 m with a ceiling height of 2,5 m, the cooker hood should replace approximately 400-800 m³ per hour. There will always be some loss of pressure when installing a hood. That is why it is important to observe the following rules:
• always observe the hood’s recommended venting diameter (Ø) specified on the venting tube or pipe
• where possible, use smooth pipes to minimise air resistance.
• try to make the installation as short as possible and with as few bends in the pipes as possible
• You want gentle curves in the pipe rather than sharp bends, so that the air can pass through unhindered, minimising pressure loss