In message , Big Les Wade
writes
I've got a couple of disused fireplaces I'm going to bring back into
use with woodburners. I'll need to fit stainless steel flues. Do all
flues & burners have a standard gauge or do I have to worry about
matching them up? I'll probably be going for quite small burners, about
3-4kW at most. Recommendations welcome.

The manufacturers site will tell you about flue sizing. Just as
important is insulation.

To meet the regulations you either need to involve building control or
use a Hetas registered installer.



--
Tim Lamb