I’ve messed about for years with immersions, lpg tanks etc.
Last September I upgraded to a Grippatank Hydro heat.
I would never be without it now. I use all day every day, and im really seeing the advantages now. Glass and frames are definitely cleaner than when I was using cold. It’s taken about 6 months to see this, but I think 4- 6 cleans with hot water and you really see the windows getting cleaner, especially the pvc.
Do you need it?
No.
If you’ve got a spare few thousand then I’d say do it.
I worked for years with cold, but the last few months I’ve had my best months of business by a long shot and I attribute that partly to the hot water.
To be honest though, I wouldn’t get one right away. Concentrate on getting your round built up first.
Grippatank can get you a cold set up, and then bolt the heater on at a later date.
That’s what I’d go for personally.