ARLINGTON, Va. — ACCA has announced the launch of its newest online certificate training program, Qtech: Duct Design Basics. Through Qtech, contractors can offer their employees on-demand training in ...

MANY YEARS AGO, I paid good money out of my own pocket to learn how to design a duct system. I won’t say to whom I paid this money, because I got ripped off. What I “learned” was how to find .1 on a ...

The shortest distance between two points is a straight line, but when it comes to your duct work that may not be the best path for an efficient system that cools and heats the home properly.