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[Technology Connections] My water heater is cooler than yours
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this post was submitted on 23 Aug 2026
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Technology
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https://www.sidite-solar.com/cold-climate-performance-cop-data-air-source-heat-pump-performance-at--25c-real-cop-efficiency-curves-compared-2026-guide-
You assumed 0°C? They solved it at winter temperatures most of Sweden sees.
Any COP above 1 eventually pays off, as long as it does so before the equipment is due for replacement you're good.