this post was submitted on 26 Jan 2024
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It was a freezing Friday evening early in February 2023, when my boiler broke. An engineer was called, several cold days passed, and his declaration came in sombre tones: ‘uneconomic to repair’. Li…

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[–] mindbleach@sh.itjust.works 3 points 9 months ago (1 children)

Oh, using the same system, instead of switching to forced air.

... why does efficiency matter if the heat stays in the house? They're just always-warm instead of sometimes-hot, yeah?

[–] c0m47053@feddit.uk 7 points 9 months ago

We don't tend to use air/air heat pump systems in the UK, even for new builds, always air/water.

Because of lower water temperature output of heat pumps compared to the gas boilers they replace, usually you need to increase the size of radiators to be able to achieve a room temperature change in a reasonable time. What is being referred to as efficiently, is actually just a measure of performance of the radiator, not actual energy efficiency.