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 10 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 7 points 10 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.