Duct Cleaning Ranked

Duct Cleaning: Air duct cleaning questions

Review what evidence supports cleaning and what a service should include before agreeing to work.

  • 5questions on this site
  • 5public signals
  • 100points at most
Schematic, not to scale, of a split heating and cooling system: an outdoor unit, two refrigerant lines through the wall to the indoor unit, a duct to a ceiling vent, and a thermostat on the wall.outdoor unitindoor unitthermostatrefrigerantlinesduct
Schematic, not to scale: a split heating and cooling system.
Schematic, not to scale, of a split heating and cooling system: an outdoor unit, two refrigerant lines through the wall to the indoor unit, a duct to a ceiling vent, and a thermostat on the wall.outdoor unitindoor unitthermostatrefrigerantlinesduct
Schematic, not to scale: a split heating and cooling system.

The five questions we answer first

  1. What signs would justify having my ducts inspected for cleaning?

  2. What evidence should a cleaner show for a mold claim?

  3. Which HVAC components are included in the proposed cleaning?

  4. What should I ask before allowing chemicals or sealants in the ducts?

  5. How can I check whether the agreed cleaning work was completed?

How ranking works

  1. Experience20

    Years licensed or years registered with the state, whichever is longer.

  2. Insured20

    Insurance on file with the state board that hasn't lapsed.

  3. Clean record20

    No board discipline on file.

  4. Recent work20

    City permits pulled in the last 12 months.

  5. Rating20

    Public ratings, pulled toward the average when there are few. Shown only as “Highly rated”.

  6. Points100

Each signal is compared with the other companies on the same list. A company the data doesn't cover gets the list's middle score for that signal: never zero, and never the highest. When no company on a list has a signal, it's left out and the others share the 100 points.

Paid placements0

The full methodology