[Brent Deines]

Don,

You seem to be missing two very important facts here. The air conditioning system is a closed system, and it is a pressurized system. If you have a leak in that system you cannot evacuate all the air, nor can you get it to hold the freon. Soooo, as I said in my post, IF you are only working on bullseyes where you can completely cover the pit area so there is no chance to pull any air from the surface, and IF your system is capable of separating the air from the resin with a one way valve or bleed off the air without letting any air back in, what you are saying would make sense. Otherwise you simply are not comparing apples to apples.

I don't expect you to believe me, but if you hire an independent engineer you will understand what I am talking about.

I guess all that really matters is that you are happy with the equipment you use, but I hope we can leave it at that and not get into a big debate about pressure and vacuum. I have been having these debates with competitors for years and nothing ever changes.

I still believe that comparing systems side by side is the best test. If I was just getting into the business I would choose the top 2 or 3 systems, make sure the companies selling those systems are confident enough in their products to give a money back guarantee, find out for myself which one works best, and send back the others.