Can anybody please help me ,British gas have told me that the rules have changed and that the terracota air bricks in my utility room which house my 105,000btu boiler are no longer sufficient ,
How can i work out what size air bricks i should have and what the F A S should be.
I have hepworths technical spec sheet on their air bricks
The boiler is boxed in and the flue exits through the roof
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