Switched over from pencil jets to fan jets - with a hi / lo Vikan brush head. I have done over 100nr customers this week and everyone has marks. I have been cleaning the houses for several months with wfp.
Did an experiment last night on my conservatory - half with fan jets and half with pencil jets - no marks with the pencil jets - hundreds of bead marks with the fan jets. I clean them the same, and my house (since it was built and purchased by me) has only been cleaned with wfp!
Whats the crack with that - cos I don't want to loose customers - and I don't want to blade them off after clean, as it's defeating the object !!!! - HELP?
What you will probably find is the fan spray is getting into parts your pencil jets never reached, and this is causing the spotting. Doesn't mean the fan jets are not as good but the very opposite. After a couple of cleans with the fans the windows will be spot free again. If this is not the reason then it could be badly designed and made fan jets, and or, the brush may not be up to the job. All brushes are not equal.
I was trying to save myself time getting involved with another fan verses pencil debate, as I have been involved in a few different ones in the last couple of weeks. I was hoping that someone would suss it out and save me the trouble, as it does get a bit boring after a while going over the same ground. It is interesting to see how these debates go though, how it swings from anti fans, to pro fans.
There is only one type of jet and that is a fan, anything else is a waste of time as far as I am concerned. The reason fan jets are as widely used is the fact that they are much easier to make, which in turn makes them much cheaper to produce. People making these brushes up give you fan jets not because you want them, but because there is more profit in it for them, or they don't know any better. Imagine a new brush supplier comes on the scene he will either be a window cleaners using a certain brush at the time, or a manufacturer of brushes. The window cleaner will more or likely have a brush with pencil jets because that is what he used, because he was supplied with them in his brush, when he first started off . The manufacturer will get a hold of a couple of brushes to copy, and there is a good chance they would have pencil jets in them. So if I new brush came on the market then there is more chance of it having pencil jets, again not because they are better. Now go back 6 years and think who has brought out a new window cleaning brush, and above is why it has pencil jets. Now if you try and change over to fan jets there is a good chance you will come across some problems, like the one I have explained in the first paragraph, or some other problem, and again not because they are not as good.
You want them, because the suppliers want to sell you them, in much the same way everyone in a certain area is eating and drinking certain things, because their local supermarket has certain offers on at the time.
Peter