DIY Doctor

Main navigation

New boiler for a one pipe system

Postby Glen Thomas » Thu Sep 24, 2009 6:34 pm

My old boiler is a 25yr old Glowworm 45-60 standard boiler (which is still working, if expensive), on a one pipe system, with copper tank in the airing cupboard. Can I replace it with a new more efficient condensing boiler without changing my piping system? I have 12 radiators but usually 4 or 5 are not in use. What type should I be looking at?
Glen Thomas
Rank: Labourer
Progress to next rank:
Posts: 2
Joined: Thu Sep 24, 2009 6:28 pm


Simply Build It

Postby plumbbob » Sat Sep 26, 2009 12:12 am

You really need to think carefully about keeping the existing one pipe system. Sure, you could just replace the boiler and continue as you are but the single pipe is never going to make the most of the modern high output boilers. In fact, it is almost certainly reduce its efficiency.

Any decision may become clearer once you have decided which type of system to opt for. The easiest option is to replace the boiler you have and keep the hot water cylinder. Apart perhaps for a few TRV's it could be as simple as that.

If a pressurised system such as a combi or unvented stored water is chosen then it is a different ball game. The amount of changes required must put an upgrade only half a step away and whose to say the 40 year old pipework is up to the task anyway?
Rank: Project Manager
Posts: 1891
Joined: Wed May 07, 2008 9:59 pm

Display posts from previous
Sort by
Order by

  • DIY How to Project Guides
  • DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!

  • Related Topics