Hey Jon,
How have you been?
You are absolutely "Correct" In most cases two 5 GPM machines are cheaper than one 10 GPM machine!
But there are a lot of Pros and Cons here also.
On one hand, with 2 units the odds of both being "down" at once are lower, than the odds of one being "down"
So theoretically you will always have at least one unit running.
However one may argue that with 2 engines, pumps, unloaders, burners etc. etc. you are at least twice as likely to have a problem!
In my humble opinion, there are numerous different things to consider before deciding to go with 2 - 5 GPM units, or with -1- 10 GPM unit, or do you go with an 8 GPM @ 3000 PSI.
Bottom Line I believe there is NO RIGHT ANSWER as to which is better, I think the key here is which is best for this particular application.
I have suggested two 5 GPM @ 3500 PSI skids to one customer based on his application etc. and -1- 8 GPM @ 3000 PSI to another.
Whether you go with one or two units, the key is picking Quality Equipment, and maintaining it properly!
It seems that there are many different schools of thought on which is the best!
I am just presenting mine.
Have A Merry Christmas!
I will buy you a beer sometime.
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Call or e-mail me if I can be of assistance!
Mark McIntyre: AKA: Pressure Washer Zone Man.
PressureWasherZone.com EasyCleanSystems.com
Mark@easycleansystems.com
916 638-0828