so i managed just over 3 hours work with 120L pure today (and thats cleaning most ground floor windows with the pole too)so from monday im going to take a little DI vessel with me and fill up somewhere at lunchtime whether itll be at home or at a customers property.
i was surprisingly fast really as im using 40m of pole hose so dont need to move the backpack often(some jobs i leave it in the car!).
i was only around 10 mins slower than my van mount!this was on 4 weekly work though(estate work too).ill probably be a bit slower on larger jobs and commercial but who knows?i might surprise myself!.
also purifying 120L takes about 15-20 mins so quick too.
i am avoiding lots of top frames(unless their really dirty) and im more careful with water generally esp when rinsing upper sills.