I have gas heated water and I have really scrutinised my work whilst using it,I find if I run it warm it does not make to much difference,if I run it very hot it does make a big difference but is complete overkill on maintenance cleans,so now it only comes on when I do 1 st cleans and my maintenance cleans still come good using cold only.
My system is as follows ibc tank at home with a 650gpd ro system from streamline that goes thru a di straight into tank, I have a Clarke transfer pump in the ibc, only cost me about £38 and transfers 40L a minute, in the van I have a 400L tank and a shurflo pump, one clx 27 pole for the majority of my work and a couple of heavy cumbersome streamline poles for back up,I recently bought a 2nd hand pure freedom trolley with a load of containers for £260 off eBay so I have around a 600L capacity on the van,the trolleys are very good and do exactly the same as a van mount system, the only downside is swapping the containers over but this only takes half a minute, I now have a part time worker 2 days a week and we alternate between van and trolley when we work, you can spend a lot of money in this game or spend very little but the end results are the same so spend wisely
Graham