Among the more obvious reasons for the use of round duct on rooftops, such as preventing rain, snow and ice buildup, ease of wind passage is perhaps the most overlooked. PhenoliDuct, a new closed-cell ...

Many HVAC contractors work on two sides of the shop: piping, known in the trade as the "wet side," and sheet metal ductwork, the "dry side." The two have historically run as separate operations with ...

Leaky ductwork can contribute to significant energy loss in a building. Well-designed duct systems distribute air efficiently throughout a facility and keep rooms at a comfortable temperature. Whether ...