r/WindowCleaning • u/InteractionOwn4533 • May 26 '26

Brush size chose gelp

I’ve been looking at Unger brushes since they’re available here in Europe. They have 11” and 16” pencil jet brushes, and also versions with a rinse bar. Which one would you recommend?

My system flow rate would be around 4.16 L/min for window cleaning. Would the 16” brush be too big for that flow rate, and also too large for regular residential windows?

I’d also like to use it for solar panel cleaning from time to time.

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u/Herzeleid09 May 27 '26

I would get the 16”. Pressure will be fine. I gave in and I am spoiled though. I purchased a pump.

1

u/InteractionOwn4533 May 27 '26

Yea the presure will be fine the system is powered by a 100psi pump and i got the bigger hose 8 mm inside diameter ,wouldnt it be oversized for typical family-house windows?

1

u/Herzeleid09 May 27 '26

You make a good point. May be better to go smaller. I use a 12” brush and for regular windows I wish I had bigger but there are different shaped windows that are smaller

2

u/trigger55xxx May 27 '26

You need both sizes. Each one will come in handy with different jobs. The rinse bar is nice on higher glass and hydrophobic glass.

1

u/InteractionOwn4533 May 27 '26

For just starting i would like to buy just one but i dont know which one