what Size Of Bathroom Extractor ?

Joined
19 Sep 2004
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Is there a calculation to give what size ( cubic metres per hour) of

extractor to fit in a bathroom ?
 
For a new build Part F1 requires

Bathroom 15 litres/second =54 cubic metres/hour
Kitchen 60 l/sec = 216 cu.m/hr
Utility 30 l/sec = 108 cu.m/hr
Toilet 3 air changes/hour with 15 min overrun timer
 

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