I use fan jets all the time,I take it half of you guys are novices,it's all down to control.
I used pencil jets and are great on windows that sheet but ARE really crap on windows that bead,l I think fans are far better in my opinion.
THEY ARE ONLY LESS ACCURSATE IF THE OPERATOR IS AND HAVE OVERSPRAY IF THE OPERATOR IS CLUMSY!!!!!!!!!!!!
I personally think the previous post is NONSENCE :
I've been wfp coming up 3 & 1/2 years, I use a tap in the hand and turn off between windows. What I don't like about fans is the extra time they take as you need to be more accurate because of overspray. A pencil hits the window exactly where you want it to but a fan is a bit more like a smudge.
I prefer windows that bead, they take me the same amount of time as windows that sheet, but I know on windy days I'm safe. It's very interesting that the original poster put his little experiment up which helps to prove the point. Not saying that they are useless, or that people that use them are idiots, but I feel they add more time to the job.
I have 3 monthly work that beads terribly and yet it comes up perfect with needle jets. Why not carry out an experiment on some hydrophobic windows, cleaning them with pencil jets at the same speed as you would with fans and see if it makes a difference.
I think it has more to do with confidence in the tools than anything else, you might feel that your not rinsing properly with pencils, but the results prove different.
Simon.