so i bought a van thatts got a heated system in it, 400 litre, do heated systems use more water? can you clean more glass with the same amount of water with a heated system?
reason i ask is that the tank i have on my current van is 500.
also how much does gas cost roughly for a weeks work?
c l u e l e s s
I don't use hot water and I don't have a hot water system - yet.
I did rig up a diesel heater I have over Christmas on a test bench to see what I could expect.
I found that the heater raised the water temperature at the brush head from 9 degrees to 35 degrees. With the controller at the same speed (5 on my Varistream) the hot water out of the jets of the brush squirted much further than when the water was cold.
I found I had to turn my controller down to 3 to have the same rate of water coming out of the brush.
So in my experiment, had I stayed with the 5th speed, I would use more water because I can't wash and scrub the window fast enough to keep up with the extra flow. Rinsing was brilliant though with that extra flow of water. However if I turned my flow down, I think I would use the same amount of water.
But I wouldn't be a bit surprised if other factors would come into this as well.
'Fear' of breaking someone window with hot water may make you work faster.
Also seeing the actual cost of heating that water you are using may also increase your cleaning speed, especially if you are like me and tend to over clean.
You also may work faster because people tell you that you can do the same job quicker with hot water and you believe it.
Working with more flexible hoses does make your day easier. So this could also help you to do more work as you are spending less time with hose management.
I don't want to start a debate on whether hot water cleans better than cold water as I have no personal experience on the subject. What I do know is that I do spend too much time on each window.
Son in Law does more than twice the number of houses I do a day. Whilst his being 1/2 my age is a factor, he spends much less time on each window than I did when I did the work his is doing now. Initially I was appalled at how little time he spent on each house, so I did spot checks and can assure you they were perfect.
So even with cold water, your cleaning rate can be speeded up by not over cleaning.
