After 10yrs as an industrial mechanic i had to take an office job...now as fate would have it i get to use tools again doing testing and balancing of commercial a/c units...i have no idea what i'm getting into but there's training so i see it as a great opportunity to learn something new and see where it takes me. My questions are 1. Does anyone on here do this kind of work? and 2. What tools would i need? I have quite a bit of tools and like to be prepared for anything that may come my way but i also know i'll have to lug these around with me so i'd like to keep it as light as possible. thanks in advance for any help offered.