Can Air Duct Cleaning Prevent Health Problems ... The EPA also states that if you see visible mold growth on the sheet metal inside ducts or other components of the heating or cooling unit ...

A recent state administrative ruling found a Vancouver-based manufacturer’s ductwork fabrication for public works projects ...

HVAC workers fabricate and install fans and ducts or air handling units. Architectural sheet metal workers install panels and siding to protect and preserve structures or buildings. Industrial ...