Microbore or 15mm pipes & which boiler? *Now with added queries!*

A question about : Microbore or 15mm pipes & which boiler? *Now with added queries!*

Hello!
We have had a quote for a 'normal' boiler and a Worcester boiler with a difference of about Ј200. Both boilers come with a 5 year guarantee from the plumber himself (parts+maintenance).

What the heck should I be looking for in a boiler? Which model is best? All I know is I need a combi boiler!

Any help gratefully received

Best answers:

• Worcestor bosch and valiant are the only boilers i would have in my house!
• Hello - I'm no expert but having had same dilemma and monitoring this forum the general consensus is the worcester or better still valliant are the boilers to go for. I also found a different website where the was a survey and most people were opting for valliant I have opted for a valliant for my 3 bed semi. It depends on how big your house is. Canucklehead who regular posts on here will be able to give you spot on advice.
• Hi...my ears were burning
  In answer to the OP...get a full specification written quotation. In terms of a combi, the RGI should have have checked the mains water flow/pressure rates to determine if a combi is suitable as well as the gas supply. If you have more than 1 bathroom then most combis would struggle. I'd recommend Vaillant or Viessmann (and WB but only the CDi range).The OH would also fit a Boiler Buddy/Magnaclean, scale inhibitor (hard water areas only), powerflush system, fit TRVs, wireless programmable roomstat and lag (insulate) pipework where required.Quote should include notification via CORGI.
  Take a look at this guide from the EST
  A boiler is only as good as its installation and annual servicing.
  HTH
  Canucklehead
• Ahh thanks for your info! This didn't pop back up in my subscribed threads. Would you reccomend getting 15mm pipes fitted -they are currently 8/10.
  Our house is quite a small 3 bed semi. One bathroom (and maybe 1 downstairs loo)
• a 'non-named' brand of combi is what i mean plumb1
  Everyone I have spoken to has reccomended getting 15mm pipes - why do you suggest otherwise 'thechippy'
• Yep I thought the Ј200 extra was worth it for a worcester!
  hmm interesting as both our dads have said 15mm is the way to go as they get the heat around properly??...and we'll be spending about Ј1000 more getting a whole new system put in so REALLY need to think if it will be worth it!
  What is a powerflush?
• does it basically clean the system out first??
  btu - argh! these things scare me. Radiators are APPROX 60" in most rooms, think the living room is 125"
  Is under floor heating a better option??
• We are having a Worcester-Bosch Greenstar 42 cdi fitted this week- I will tell you what its like next week on renovation thread.
• ooh thanks
  so much choice!
• hmm thanks for the info chippy. All the plumbers have said they dont think we need 15mm but the dads are insisting! the difference is about Ј1000!