Lyfco Splash 35 Pool heat pump test (COP & wattage)

Please NOTE! I adjusted for the cooling loss in the tank and then got these new figures for 20°C air temperature. COP_max = 4.21 COP_mean = 3.49 (4.21 is above 4.15 COP specified @15°C air temperature, but I had about 20°C air temperature...) How did I figure out the heat loss? I measured how much a similar 52.5L-tank dropped in temperature from 40 to 22°C in the same conditions, and got a "mean loss wattage" of about 120W, with no bubbelwrap afloat, but with insulation below the water tank. Lyfco Splash 35 Pool heat pump test (COP & wattage)

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Test - Pool at 30°C: This is how long it really takes to heat up with a heat pump

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