Great looking stuff guys, i kniw this thread was started some time ago but i have some air flow questions. I have a large double door True glass door cooler. When it is in cooling mode, there is a large internal fan that is quite powerful, i havemt hooked everything up yet but im wondering if this fan will be on enough throughout the day to give me case hardening issues ? Also is the exchange of air as important as air circulation ? Pease help.