In the 1970s, new homes started to be routinely built with ductwork for the new central air conditioning systems. Those ducts are also often how heat is conducted through homes. This is a great system that continues to be the standard for most new construction.
However, even the best systems occasionally have problems. The main issue that ducts face is leaking: deterioration from age, or damage caused by anything from rodents to remodeling. With ductwork generally sealed away out of sight, how can you tell if there’s a leak? Here are some telltale signs to keep an eye out for.