Just thinking of having a combi boiler fitted after having boiler and large water heater. The existing boiler is linked to outside wall by two flues but I note that all combi boilers have just one flue. Can I purchase a combi with two flues and which is more beneficial. Thanks
combi boiler and flues
- Thread starter thebeachboy17
- Start date
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A combi and most modern boilers have two flues in one.
The inner flue pipe takes the gases away. The outer flue pipe takes
fresh air in.
This is a safe system any failure of the exhaust pipe means gases are just
drawn back into the boiler and burner then thrown out again.
A much better system than two separate pipes.
It is possible to have a twin pipe flue for most combi boilers but haven't come
across the need for it EVER. There area always better solutions.
The inner flue pipe takes the gases away. The outer flue pipe takes
fresh air in.
This is a safe system any failure of the exhaust pipe means gases are just
drawn back into the boiler and burner then thrown out again.
A much better system than two separate pipes.
It is possible to have a twin pipe flue for most combi boilers but haven't come
across the need for it EVER. There area always better solutions.
Thanks very much for your reply, it was very helpful.
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