How do you measure a gas boilers efficiency

Options
Mstty
Mstty Posts: 4,209 Forumite
First Anniversary First Post Photogenic Name Dropper
edited 9 March 2023 at 6:08PM in Energy
Hopefully a simple question how can you tell the efficiency of a boiler one that's been installed for 15 years?




Comments

  • Rodders53
    Rodders53 Posts: 2,187 Forumite
    First Anniversary Name Dropper Photogenic First Post
    Options
    You can go by the spec of the boiler when new from the handbooks, and expect it to be perhaps a little worse with wear and tear.

    To measure it will need lots of super expensive tech kit and likely the removal of the boiler to a suitable laboratory to do the measurements.
  • Mstty
    Mstty Posts: 4,209 Forumite
    First Anniversary First Post Photogenic Name Dropper
    Options
    Sort of confirms searches so far.

    15 years just a little worse? 

    I do wonder how you can prove the efficiency in real life not on a test bench even when they are new let alone up for replacement or repair.
  • BUFF
    BUFF Posts: 2,185 Forumite
    Photogenic First Post Name Dropper First Anniversary
    edited 9 March 2023 at 7:16PM
    Options
    Flue gas analyser I believe. Often a printout given as part of a service.
  • Mstty
    Mstty Posts: 4,209 Forumite
    First Anniversary First Post Photogenic Name Dropper
    Options
    BUFF said:
    Flue gas analyser I believe. Often a printout given as part of a service.
    Yeah reading conflicting info they are mainly emissions detecting and not for efficiency.
  • BUFF
    BUFF Posts: 2,185 Forumite
    Photogenic First Post Name Dropper First Anniversary
    edited 9 March 2023 at 7:34PM
    Options
    the results shoud be able to inform on combustion efficiency.
    Obviously from that you can't tell how efficient e.g. the heat exchanger is so there will be some losses.
  • markin
    markin Posts: 3,854 Forumite
    First Anniversary Name Dropper First Post Photogenic
    Options
    Measuring the gas use and the temp rise of a stone cold water tank should be very close.
Meet your Ambassadors

Categories

  • All Categories
  • 343.7K Banking & Borrowing
  • 250.2K Reduce Debt & Boost Income
  • 449.9K Spending & Discounts
  • 235.8K Work, Benefits & Business
  • 608.9K Mortgages, Homes & Bills
  • 173.3K Life & Family
  • 248.4K Travel & Transport
  • 1.5M Hobbies & Leisure
  • 15.9K Discuss & Feedback
  • 15.1K Coronavirus Support Boards