Air-water heat pump and controlled residential ventilation with heat recovery

OK, and which air-to-water heat pump is better for me? I have listed the COP values below, but which one is also not an energy guzzler? COP values entered as A-7 / W35 1. Alpha-Innotec GmbH LW 121 (A) COP 2.91 11.3 KW 2. Junkers Bosch Supraeco SAO 110-1 COP 3.04 11.13 KW 3. Mitsubishi Electric EU PUHZ-SHW112V(Y)HA

Sorry, it continues
4. Stiebel Eltron GmbH WPL18E Cop 3.30 11.30 KW
5. Vaillant Deutschland GmbH geoTHERM VWL 102/3S Cop 3.00 9.60 KW
6. Vaillant Deutschland GmbH geotherm VWL 141/3S Cop 3.17 1.90 KW

Well, they are all energy guzzlers... but without knowing the heat demand, you don't need to start with brands... first heat demand, then COP, brand, etc.

Hello,
[Quote="capkin, post: 56239"]OK, and which air-to-water heat pump is better for me, I have listed the COP values below but which one is not an energy guzzler at the same time?...[ /QUOTE] Who can answer that reliably, since not even the essential data of the basic assessment are available here, e.g. actual demand (power, energy) for heating and hot water!
Just take whatever you enjoy, or whatever someone talks you into!
Example:

Quiz question, which air heat pump would be cheaper?

Best regards