Air Duct Cleaning Scams Bait Prices, Mold Scares, Health Promises

The bait price

The most common scheme starts with a number too small to be real. NADCA, the duct cleaning trade association, warns homeowners away from whole-house offers at $100 or less, including the ones that appear in neighborhood social media groups. The EPA puts a legitimate cleaning at about $450 to $1,000 per heating and cooling system, and metro Atlanta price lists for a single system start well above any flyer. The bait price buys a foot in the door, and the bill then grows by the vent, the return, a "heavy contamination" surcharge or an unrequested sanitizer.

The mold scare

The second script arrives mid-visit, with a phone photo from the attic. The EPA's guidance is the best defense: only an expert can positively determine whether something is mold, many duct sections cannot be seen easily, and homeowners should ask the provider to show them any mold they claim to have found. A lab can check a tape sample for around $50. NADCA's own standard treats a background of settled spores as normal in every house. Real growth is a real problem, but it should be proved before it is priced, and the moisture source behind it should be named. The page on mold in air ducts covers what genuine growth looks like and how it is removed.

The health promise

The third script sells cleaning as medicine. The EPA says it has never been shown to prevent health problems and warns against sweeping health claims. In Marietta the pitch peaks in March with the tree pollen, which comes straight back in through doors and leaky returns.

Credentials that mean nothing

The EPA does not certify duct cleaners, so a claim of "EPA certification" is false on its face. NADCA membership is real and can be checked on the association's website. In Georgia, the Attorney General's consumer protection office notes that air conditioning contractors are licensed by a separate board from general contractors, so if a duct cleaning visit turns into a pitch to replace equipment, ask for that license and look it up before agreeing.

Upsells worth questioning

Biocide fogging is the most common. The EPA says no biocide is registered for use in internally insulated ducts and that research has not shown these products work in duct cleaning. Sealants sprayed inside ducts should be used only in unusual circumstances, and never over wet liner or active mold. Then there is the "blow-and-go" job: a shop vacuum at the registers with no negative air on the trunk. The EPA warns that an inadequate vacuum system can release more contaminants into the house than it removes. If the quote does not mention negative pressure, the returns and the air handler, it is not a whole-system cleaning.

What Georgia and federal rules give you

Georgia's consumer protection office, now the Consumer Protection Division of the Attorney General, handles complaints about unfair and deceptive practices in consumer transactions. Its home repair advice translates directly to duct work: get written estimates from several companies for the same specifications, insist that every promise and warranty is in the contract, do not pay for work that is incomplete, and treat door-to-door solicitation, pressure for an immediate decision and demands for full payment up front as red flags.

The FTC's Cooling-Off Rule adds a federal backstop. For a sale of $25 or more made at your home, you can cancel for a full refund until midnight of the third business day, and the seller must give you two copies of a cancellation form. The rule does not cover a repair or maintenance visit you requested yourself, but the FTC says other purchases sold to you during that visit are covered. A sanitizer or a "mold package" sold on the spot during a cleaning you booked can fall into that category.

How to check the work before paying

Under the EPA's post-cleaning checklist, coils, drain pans, the blower and plenums should all have been reached and left free of visible debris, access doors should be secured with more than tape, and the system should run normally in heating and cooling. NADCA's ACR standard calls a surface visibly clean when nothing loose is left on it. Before-and-after photos of the same runs are the easiest proof, and a legitimate crew will offer them. For a job done to that standard, see air duct cleaning and HVAC coil cleaning.

Where to report a problem

Complaints go to the Georgia Attorney General's Consumer Protection Division, online at consumer.georgia.gov or at (404) 651-8600, or (800) 869-1123 toll-free within Georgia. Keep the flyer, estimate, invoice and photos. Before the next quote, compare it with the sourced Marietta ranges on the pricing page, which makes both the bait price and the padded bill easy to spot.