Im a HVAC tech and be wondering? I was wondering if any of you other techs know of a...

I was wondering if any of you other techs know of a appropriate web site i can budge to and brush up on some comercial refrigeration info. Been a while since tech school, and i want to rejuvenate on some things for a new employment.
Not ample hot hose down for even one...
Answers:    I know that there are video and books out there you can buy. You might try amazon.
Garage door comfort?
avatar....frightening....nightmares....s...