We lost the long copper tube heat exchanger, trying to feed it out of the leaking tank, when it broke.
So, I've been thinking about adding a small heat exchanger to the A7, with a connection to pump it down and add some refrigerant.
Then, I could connect some copper tube to the small HX, into a small water pump and pass warm water thru the water-jacket of my HS Tarm old hot water boiler.
Seems like a lot of work for a 74 year old guy, who would like to spend more time on the important things in life.. Like enjoying my Grandson..