In Part 22, I detailed my decision making process in relation to my choice of a pre-plumb Mitsubishi Ecodan 8.5kW ASHP based DHW and heating system.     I now have a full set of data covering 12 months so can provide figures in respect of how the system, and our house has performed.   My baseline requirement was to maintain 21.5C in the house 24/7 throughout the heating season (October to April), and a supply of DHW water that would allow multiple showers to be drawn of