I think he confirmed the issue being 'needing re gassing (because of a leak presumably) and it not being worth it.
Now, whilst I've examined / cleaned out a few different AC / fridge / cooler units and compressor pumps I've not even repaired or re-gassed anything so not sure what the deal is.
Like, I think I have seen these smaller / cheaper (~£650) units they seem to be 'factory gassed' and the pipe seal off, rather than re-gassable via a connector of some sort, as in most cars?
So, assuming this system was empty of gas, would it be possible to fit it with a car gassing point ... as my mate has a car AC re gassing unit?
Is the gas (or are the gasses) and lubricants used on cars the same as those in domestic units?
Obviously, if I could get it re-gassed I could use my mates sniffer to find any leak and potentially repair it (compressor seal?).
If I tried any of this it would mostly be for the S&G's but if it did turn out to be viable (from a d-i-y POV) I could actually make use of it here (It's one of those slimline wall mounted units with a concentric port (like a balanced flue) that goes though the wall, along with a small water drain pipe).
Cheers, T i m