[nirolo]

Came for this comment. Why is there no COP/SCOP mentioned at all... If you want to get into the market you should be competitive. And the COP of 4.0 you mention is actually the lower end. I'm heating with an AC as air-to-air heatpump now for the second winter and I chose the most efficient that I could get with a SCOP of over 6. And for the first winter I also could reach these numbers.