This article originally appeared in the Spiral Duct Manufacturers Association insert in the January 2017 issue of SNIPS magazine. There are several factors that a designer should consider when ...

Q. I am 64 years old and most of my life I have heard that warm air ducts go on the inside walls and cold air duct go on the outside walls. Now I heard it is just the opposite of that.

OvalSox™ fabric duct is designed for low-clearance HVAC ventilation in industrial and commercial building applications. The fabric duct ranges from 11-22 inches high and 47-93 inches wide. in ...

The combustion air duct should never be blocked. To reduce the amount of cold air that flows in, place the discharge end of the duct into a large wastebasket or box.

Q: Tim, I’ve got a forced-air furnace.Several rooms in my house are cold in the winter and are hot and stuffy in the summer when the air conditioning is on. Most of the rooms are comfortable.

When the furnace fan comes on to push cold air through the duct, the hole you describe would pull more air from the basement than from the rooms.

Many people share the same energy concerns and problems. Here are a few answers to recent letters and e-mails I’ve received from readers:Cold air leaks from the indoor air handler: A reader in ...