How duct cleaning scams work in Nashville

Duct cleaning is unusually easy to fake, because the work happens somewhere you cannot see. These are the patterns worth knowing.

Last updated: September 2026

1. The $59 whole-house special

The advertised price buys an appointment, not a cleaning. A crew arrives, runs a small vacuum at a few registers, then explains that the real system needs a deep clean at ten times the quoted price. The tell is a price far below the $300 to $700 range a genuine single-system job costs. Nobody drives a truck to your house, spends four hours and pays a technician for $59.

2. The mould photograph

A technician shows you an alarming photo of black growth and quotes an immediate antimicrobial treatment. Sometimes the photo is of your ductwork. Sometimes it is a stock image, or a photo from another job. Ask them to show you live on a camera feed, at a register you choose, and ask which specific organism they have identified. Actual mould identification requires sampling and a lab.

3. The scope that shrinks

You are quoted “whole-home duct cleaning” and what you receive is registers and the first two feet behind them. The fix is language in the written quote: supply runs, return runs, main trunk line and blower compartment, each named.

4. Per-vent pricing that multiplies

A low per-vent price sounds fair until the technician counts every supply, return and bath exhaust in the house and arrives at a number nobody expected. Ask for the vent count and the total before work begins, or insist on a flat per-system price.

5. Unnecessary sanitizing

Antimicrobial fogging has legitimate uses after contamination. Sold routinely to every customer as a default add-on, it is margin. Ask what condition it is treating.

6. No licence, no insurance, no address

A company with no verifiable business address, no certificate of insurance and no licence number is a company you cannot pursue if a crew damages your ductwork. Ask for all three in writing before booking.

Seven questions that end most of this

  • How many HVAC systems does your quote cover?
  • Does the price include return runs and the blower compartment?
  • Is the price flat per system or per vent, and what is the vent count?
  • What add-ons are not included, and what do they cost?
  • Will you photograph the interior of the ducts before and after?
  • Can you send a certificate of insurance and your licence number?
  • How long will the job take? A whole-home clean under ninety minutes is not one.

If it already happened

Do not pay the revised price under pressure at the door. Ask them to leave, then file with the Tennessee Division of Consumer Affairs and the Better Business Bureau, and leave a factual review describing the quoted price and the price demanded.

Start from a shortlist instead

Our top 10 Nashville duct cleaners each publish a scope and a price range, and you can read how we assess them.