How duct cleaners work: ... Because lots of dust can cake on the inside of ducts, firms use a variety of methods — a rotary brush or compressed air nozzles, for example — to shake it loose.

When it comes to getting started in duct cleaning, you need the right equipment. “You’re going to need individual vacuums for HEPA contact cleaning, gas or electric pressure washers, HEPA water ...

He covers sheet metal, mechanical contractors, duct cleaning, testing and balancing, steel, building information modeling (BIM) and architecture, engineering and construction (AEC). Prior to joining ...