Dear Jim: Some rooms in our house are too hot or too cold, and someone is always complaining. What can we do to even out the room temperatures to keep everyone happy. Will doing this lower our utility ...

Dear Jim: We have central air conditioning, but have a problem keeping all the rooms evenly cool. Someone is always too hot or too cool. What are some simple methods to balance the temperatures ...

Ductwork used to channel or direct air to spaces throughout a building can impact the efficiency of the structure’s HVAC system. That’s why it’s important to properly design and install ductwork and ...

Life-safety dampers are critical fire-protection features of buildings. By protecting duct and air-transfer-opening penetrations through fire- and smoke-rated construction, they help to contain fire ...

Last week I wrote about what combustion air ducts are and why houses need them. This week I'm going to follow up with some of the most common problems and solutions related to combustion air duct ...

Main heating supply ducts need to get smaller the farther away they are from the furnace. Note how the large duct on the left narrows down. (Tim Carter) Analysis by Tim Carter Q: Tim, I’ve got a ...