[mark15]

i currently use a hydro flo pump controller with a shurflo 100 psi pump...ive always had it set at 35... now ive fitted a heater... does anyone else use this combination & if so what is yours set at?

[slap bash]

There are to many variables to answer, but the best is to try and see. IT should work.

[Nathanael Jones]

In my experience the L5 heaters take a higher flow rate to run reliably than most UK window cleaners are used to using - - but you do tend to work a little quicker with hot water so it does balance out a bit.

[neiljoust]

i have mine on 45 hot water all day