Here goes!
I spent under £200, Heatrod element, wiring, temp sensor in side of tank and a temp gauge on my control panel.
Costs me about £5 to run. 60/65 in tank temp,
35 ish at the brush head.
For me it’s great and that’s all that matters to me.
I don’t use it everyday but I quite often get first cleans and March Out cleans .
Performance wise I prefer it.
I use a flocked brush and the combination works really well on frames, snail trails etc.
One thing I did was to reduce my length of hose.
I never used anywhere near what was on my reel, I currently have just one job where I need to quickly attach my extension hose.
There were two benefits to doing this, easier reeling in and less strain on the reel and greater temperature at the brush head.
Boring I know!! Tanks insulated with 50mm polystyrene and still got good temp at finish time.
But cold does fine!