Further to Scott, Eric and Coincarwash's comments, here's my 2 cents;
I have 8 air-shammees for a couple of years now. They do get used, but I would not say a lot. Mortorcycles love them. But since they are just air, they are very high margin and so don't take too long to pay for themselves. They don't get used in the winter up here in Canada. JE Adam's has a "heated" air dryer, but it doesn't actually have a heater, just the heat from the motor rises the output temp. That is not enough in the winter to have people use them.
I have not had any problems dealing with Diskin and they have told me that they have a new gun design coming in the nest six month or so. I'm looking forward to seeing it before I put the fan tip on the existing ones.
Would I do it again...yes, but I already have all the other options in my Self-Serve bays.
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