H-man
Life is like a burnt steak....it's tough and the chips are always stacked against it!
P&F
Why don't you take your idea to the cleaning show. Is Mark Munro running one this year?
You could set your van up, with it all up and running and show people exactly how it works.
I'm sure the stand won't be that expensive and I bet you'd take some orders at the show.
Mark has already invited me a while ago , perhaps I should go !
100% you should go.
All that time and effort you've put in, the show would be an excellent way to see how much interest there is in your heater...
to 'test the water' so to speak.
Get your arse down there!