Air Duct Cleaning in White Marsh, MD

White Marsh is planned housing, most of it built between 1988 and 2006: the townhouse groups off White Marsh Boulevard, the colonials along the Honeygo corridor, and the Vincent Farm and Nottingham Ridge developments either side of MD-43.

Newer does not mean cleaner, it means different. The builders ran flexible duct through unconditioned attic space on plastic strapping. Twenty summers at attic temperature later the inner liner has gone brittle, the strapping has cut into the jacket, and the runs sag between hangers. Sags hold dust, and in August they hold condensate.

Almost every colonial here has the laundry on the second floor, which means the dryer vents up and out through the roof rather than through a wall. That run is longer, has more elbows, and cannot be done properly from inside. We work it from the roof down with a rotary head, and a roof exit is priced from $229 to $289.

The townhouses have their own pattern: air handler in a second-floor closet, one zone, short runs, and a builder-grade filter slot that has usually never had a filter in it that fits.