Air Duct Cleaning

Cleaning removes a reservoir of dander, pollen and dust, but allergists say no study shows symptoms improving. When it is worth it, and what helps more first.

Three of the ten signs are worth acting on and the other seven are only worth checking. How to tell which you have, with a screwdriver and a phone light.

Dirty ducts are a dust and odor problem, not a diagnosis. What the EPA has actually found, and how to tell whether the dust comes from the system or the house.

Mold usually grows on the wet parts upstream of the runs. How much there is and what it is growing on decide the job, far more than the species does.

Most homes around St. Louis pay $450 to $1,000, and the number of openings moves the price more than square footage does. Count yours before you call anyone.

What to ask before you book, what a good answer sounds like, and how to check a company’s credentials yourself in under a minute.