Real world COP vs. manufacturer claim
I think that I would prefer a heat pump from a well known Japanese company, particularly after looking in detail at the data obtained under standard testing procedures, which clearly showed that the Ecodan units could be expected to achieve their specified output rating down to something like -15C.
You are perfectly correct that to obtain the full benefits of a well designed and built heat pump, you also need your whole system to be well designed and installed.
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Vaillant Arotherm yeild and COP readings
11 months ago
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Viessmann Vitocal 250-A in the UK
1 year ago
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Slash Your Heat Pump Bills Overnight
2 years ago
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Does your heat pump calculate and provide you with a COP figure?
2 years ago
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Daikin EDLA14D3V3 COP is now below 1
3 years ago
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