If you could not see the difference in vacuum it was because they had it running on low
speed. I use one every day and can tell you when you have it in dual speed, 2 wands,
100ft or more hose, is when you can really tell the difference in vacuum. Even only using
2 inch hose. I have a hospital account I do where we run 300x2 with 2 inch all the way to the wand
and it would seem like you have two separate machines in the parking lot. The job takes 5 hours and
where we started is BONE DRY when we leave, with no fans. .09 flow x 2 @ 550 psi.
I would surely have more vacuum and heat with 1 Titan than if I had my two old 2002
Butlers 5.8 running
single wand on the same job in mach 2 speed.