It's all diy - the controller and installation anyway. The heatpump itself is a basic compressor/fan/reversing valve unit that I have added my own controller and control software to.
I describe it all in this post
https://ecorenovator.org/forum/showthread.php?t=5017 although the software has been upgraded several times since then.
Currently I'm updating the thermostat that goes with the heatpump and have created an app for my phone so I can control the heating directly. The flame on the right is animated to show when the compressor is running, the bar on the left is to increase/decrease the set temperature.