Q Is it time to replace my 40-year-old ductwork? Can reduced heating and cooling costs justify the high cost of replacing the ducts, or will sealing and insulating the existing ducts be just as ...

Insulating a crawl space is your best bet. Sealing vents with foam panels (available at Lowe's) and laying down plastic sheeting (6-mil, also from Lowe's, works well) helps block airflow and reduce ...

Question: I have a question about my air conditioner. The air handler in the attic gets a lot of mildew on the outside of the unit and around the ductwork. Mildew builds up in the drain pan and then ...