CHICAGO - It seemed that everywhere you looked at the 2006 International Air-Conditioning, Heating, Refrigerating Exposition (AHR Expo), there were new duct, grille, register, and diffuser offerings.

With energy costs going through the roof and no relief in sight, HVAC system designers and specifiers are taking a much harder look at the many choices in ductwork available to them today. One ...

Question:We have seven-inch round ducts in the ceiling of our house, for heating and air conditioning. In a little-used room, we’ve never bothered to find ceiling diffusers for them. Now that we’d ...