The National Air Duct Cleaners Association (NADCA); also known as the HVAC Inspection, Cleaning, and Restoration Association; today announces the publication of a white paper on methods of inspecting ...

To fully understand how to install a high-velocity HVAC system, one must know what it is and what it does. Basically, it is a small duct, high-velocity airflow, heating and cooling system designed to ...

All questions and answers are based on the 2017 NEC. Underlined text indicates a Code change. Q. What are the Code rules regarding wiring installed in ducts specifically fabricated for environmental ...

Though suspended ceilings (above, right) remain the most popular ceiling system option, facility managers report that 17% of their total building square footage still features an open plenum ...

Q I live in a home that was built with transite heating (heating and air conditioning ducts under the poured concrete floor in the basement). We've had continuing problems with water infiltration.