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Home > How it Works > what is the smallest size flue for a combi boiler as 4 inches is a bit large

what is the smallest size flue for a combi boiler as 4 inches is a bit large

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cricketuk | 18:01 Fri 07th Oct 2011 | How it Works
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many thanks
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It depends on the size of the boiler. Some can operate with a 3" flue. I've never seen one smaller........ unless someone knows differently.
19:04 Fri 07th Oct 2011
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cheers pal for the speedy reply
21:08 Fri 07th Oct 2011

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