Lee,
Why would you want to muck about with an L5 fitting it etc? surely a hot add on from ionics or PF or someone would be more benifit than mucking about with DIY'ing something like a hot set up? Thought you were a boy who liked his quality elements? seems odd to have a decent set up and then muck about with a shower unit or what ever it is?
Because after doing alot of research I understand its very easy, guy in the unit next to me is a mechanic and will help me. Water coming out of the brush is hot, simple as that.
I believe their are times it really is worth spending the extra money, (like on a safer tank) and other times where that extra money is frankly wasted. The long L5 thread goes back 3 years, Ive spoken to several people using them both on here and on the phone, they swear by them, so its not a new idear that only one person has tried, in which case I wouldnt be interested. sure its a pain they cut out but there are ways around that. The goal is to have hot water, this way its £150 or so per van, next way is £2500 and im not sure I can see the benefit of that, I also plan to buy a spare so if one goes wrong its all of a 5 min job to swap it over and im not fussed because it didnt cost the earth. I also plan to install carbon detectors in the cab of each van.
so to sum up, £150 or £2500 and they do the same thing, yes I would rather have the same as you, but I cant see the extra for that money so its no contest for me, somewhere in the middle and I might be interested, which is why im keen to here a first hand opinion of poseidon and there product.