Upgrading central heating system

[Chuff2bitzz]

I'm planning on replacing my current boiler / hot water cylinder with a condensing combi boiler.

The current system is linked using microbore piping.

Would microbore piping cope with a new combi boiler? Or would I be better of having the whole system replaced with 15mm pipe???

I have heard that combi's put greater pressure on the system which may cause microbore to leak.

Any advice is appreciated.

 

[diyisfree]

Interesting.

Not heard of that before. Would also be interested in the answer as my new combi is in 10mm

 

[gavinda]

if you can afford the expense you would be much better of with proper piepwork. microbore is the stuff for the unskilled and lazy. i hate it. its easily blocked and not so easily cleared.... but fitted very quickly hence its use in new buiild developements by crappy site plumbers who'll never commision the system properlly as they'll never have to worry about it.

and breathe

 

[bster]

My combi is on 8mm, i changed the old manifolds though and a proper powerflush and rad valves and changed any dodgy looking fittings (like the pipes capped with blobs of solder).

been running like a dream for 2.5yrs..touch wood

 

[Chuff2bitzz]

Thanks for the feedback - think I'm gonna take the cautious route and get the all the pipes etc replaced.

Cheers