Air Duct Cleaning, Without the Upsell

Air duct cleaning has a reputation problem: $49 coupon offers that turn into $800 invoices. So before anything else, here is the honest version — when cleaning your HVAC ducts genuinely helps, and when your money is better spent elsewhere.

When it is worth doing

After renovation or major dust events. Drywall sanding, tuckpointing dust, or floor refinishing loads ducts with fine debris that keeps recirculating.

Visible mold, pests, or debris. If you can see growth or droppings inside a register, cleaning is justified — and the underlying moisture or entry point needs fixing too.

Older homes with decades of accumulation. Much of the housing stock in these suburbs dates to the 1950s and 60s; ducts that have never been cleaned since construction often carry a measurable layer of debris.

Post-purchase reset. New owners who do not know the ducts' history often clean once and then simply maintain with good filters.

When to skip it

If nobody in the house has symptoms, the registers look clean, and your filters are changed on schedule, routine duct cleaning offers little measurable benefit. A reputable tech will say that to your face. Regular filter changes and sealing duct leaks usually do more for air quality per dollar.

What it should cost

A legitimate whole-system cleaning for a typical single-family home in this area runs roughly $400 to $900, depending on system size, number of vents, and access. That number is the honest context for the $49 coupon ads: no one can put a truck, a technician, and three hours of negative-pressure work on your driveway for $49, so that price is a door-opener for mid-job upselling. A real quote counts your supply and return vents up front and commits to a total.

What a legitimate job looks like

Negative-pressure collection (a truck or portable HEPA vacuum connected to the trunk line), agitation of each branch line, cleaning of supply and return registers, and photos before and after. A quoted price for the whole system up front — not a per-vent teaser that multiplies at the door.