A comprehensive professional residential air duct cleaning typically takes anywhere from two to five hours to complete, depending heavily on the total square footage of your home, the number of individual supply and return vents, the complexity of the duct layout, and the level of dust or mold contamination inside the trunk lines. A standard single-story home with a single HVAC system can often be cleaned thoroughly in about two to three hours by an experienced two-person technician crew using high-powered negative pressure vacuum systems and rotary brushes. In contrast, larger multi-story homes with complex duct networks and heavy debris buildup can take four to six hours. You can plan ahead by removing items blocking vents. You can verify proper completion when technicians show you before-and-after camera inspection footage.
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