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Electricity used for Combi boiler?!

Benzanna
Benzanna Posts: 125 Forumite
Part of the Furniture 10 Posts Combo Breaker Energy Saving Champion
Hi everyone,
I've recently bought an Owl energy monitor.

When my gas heating comes on (via a combi boiler) it shows a spike of 2p per hour. And it's stays that high for as long as the heating is on.

I thought it might make sense for some electricity to be used when the boiler first starts heating, but I thought the point of combi boilers is that they are gas based?

Any help would be appreciated! I've looked online but can't find a definitive answer.

Thanks :)

Comments

  • jimmy_81
    jimmy_81 Posts: 109 Forumite
    Part of the Furniture 10 Posts Combo Breaker
    It heats the water with gas... But it needs an electric pump to circulate that around the heating system! ;)
  • penrhyn
    penrhyn Posts: 15,215 Forumite
    Part of the Furniture Combo Breaker
    Around 100 watts or so to run the pump, plus a little more for the electronics.
    That gum you like is coming back in style.
  • Benzanna
    Benzanna Posts: 125 Forumite
    Part of the Furniture 10 Posts Combo Breaker Energy Saving Champion
    Thank you! Mystery solved :)
  • macman
    macman Posts: 53,129 Forumite
    Part of the Furniture 10,000 Posts Name Dropper
    That will also explain why your gas CH won't work during a power cut...
    The portable monitors are notoriously inaccurate at low readings anyway.
    No free lunch, and no free laptop ;)
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