I’m fitting mine up tomorrow , have to change the whole van as I have gone from horizontal to vertical with the design , it’s had a few weeks of long run bench testing so far but this doesn’t give a true measure of heat capability unless it is connected to a full system and reel full of hose , looking promising so far though.
The cost has risen a fair bit though as it’s now in full double skin stainless, what I built the complete original model for 12 months ago is what it’s costing in parts and labour for the heat exchanger alone !
It’s still looking at being a quarter of the cost of the other diesels though ,
Nice new full ally frame though , not like the cheapie in the pic