NO-LEAK POLICY: Here, a technician performs a leakage test. While some leakage was once commonly chalked up to heating the basement a little bit, those days are gone. “Now,” says Hank Artlip, “if you ...

Poor heating of rooms in homes equipped with warm-air furnaces can sometimes be traced to heat loss through uninsulated or poorly sealed air ducts. When ducts run through cold areas such as crawl ...

Q. The heating ducts in our basement are exposed, and I know a lot of heat that I’d like to have upstairs is being lost moving through the ducts. The main duct is large and rectangular and runs almost ...