We've been using The Cleaning Warehouse in Wolverhampton for almost 20 years without any issues. In that time we've bought three van mounted systems fitted by them plus other bits and pieces but not poles we use Gardiners mainly for those. Our two vans are a 11 plate Dispatch with 164,000 on clock and a 11 plate Partner with similar miles. Both vans serviced often.
In my view turning up in a brand new van tells a story that the person charges too much for his service. Just my opinion guys.
I go a step further. Built my own system and put an immersion heater in.
So my van is 13 years old, bought new in 2012 and the system put in at the same time.
So my (then) 16K van is probably worth 4k? (insurance paid over 6k less than two years ago and it's now a cat S)
I guess the depreciation is now about £500 a year. The system (tank, frame pumps, battery, charging system, immersion) cost less than a grand and is still running fine now.
If/when I start getting big bills to repair I will reconsider but until then, happy days.