microbore vs. 15mm

[mk2phil]

Hi all, I've got micro-bore throughout my house but I'm decorating our lounge and thinking of upgrading the pipework to 15mm.

But, is it worthwhile me doing this - I've heard that Microbore will heat up quicker which makes me think that it would be cheaper to run as it doesn't take as long to heat up..? Am I missing something here?

And if I do upgrade some rooms to 15mm is it okay to leave the remainder on a microbore set-up, a sort of hybrid system until I get around to replacing the lot as I decorate each room?

 

[clf-gas]

personally dont like microbore system.
if you want to change best bet do it all at once, drain flush and fill once, that there inhibitor damn pescky expensive.

 

[stevesey]

If it ain't broke, don't fix it.

 

[mk2phil]

Well its not technically broken, but I want to run the pipework behind a cavity wall and I think 90 degree elbows will allow me to do a neater jon than with microbore.

Also forgot to mention that the house has a solid floor so the pipeowork is all drop feed and therefore looks ugly coming down the walls.

Plus, I heard that you shouldn't run microbore more than 6m, I think at leat two of my runs will be slightly londer than that.