David here's link (yes trigger, but a bit more advanced

)
I do clean frames but tend to stay of above top frame and vents unless visibily dirty, if i do em allow dripping time as will spoil panes with spotting.
yep 1-1.5 ltr flow rate.
I think getting the balance between doing a good job and being conservative with your water is wise, especially if you have small car/van.
David i use pump box ( from daqua, cheapest i found around £250, use to use freedom trolley)
100 metre reel and 6mm microbore gardiners/ 22 clx pole 30 ft fish pole (still

)
aquadapter.
Water usage for me 6-8 barrels (200 ltrs=25ltr barrels)
Say 200ltrs tops is a good day earnings wise, i do doors by hand.
I have 1mm pencil jets from gardiners which Alex kindly give to me; ashamed to say not put in my brush yet

Got time now snowed in

Ps you could save water also if trad downstairs/ i use to but false economy works out probably the same if you run out of water and finish earlier than dragg out with downstairs by hand.(imo)
lee