Dwalt hvac certification guide, anyone have an opinion on it?
I'm new to the field and have two months left of schooling but i want to get my hvac excellence, NATE, ICE, RSES and of course my hvac licensing exams.
just wondering if anyone has use the dwalt hvac technician certification guide before and if its really worth it or maybe make a few recommendations on other books or study guides i should pick up. Heres a link to the dwalt guide. http://www.dewalt.com/tools/referenc...dxrg53030.aspx thanks for any input you guys have! :)