Recommendation for ASHP Cylinder?

[Timbones (Tim)]

This other thread may be of interest:

Heat Geek Series - Heat Pump Cylinders by Newark

You were one of many people who, in recent weeks, has requested a copy of the HG Series specification – a range of super-efficient, Heat Pump-ready Hot Water Cylinders, which have been designed by Heat Geek and which are manufactured exclusively by us at Newark Cylinders. Until now, this range has been in development, but the attached specification and price list has just been signed off by Heat Geek, so I’m finally able to distribute it. Please feel free to pass these documents on to anyone el…

And also:

Is Mixergy cylinder a good choice for heat pump install?

Hi Zarch, firstly I am non technical. I am looking for a simple system. I am due to have a Daikin altherma 3 8kw ASHP installed. The whole thing is a complete replacement of my existing system, pipes, rads, cylinder etc, complete , total. They have quoted a mixergy cylinder. However having watched the recent Heat Geek video on the mixergy I was concerned about 2 things. Efficiency incl integration Doubling up of maintenance costs and conflicts of responsibility. I approached Daikin, who were…