Heating and air conditioning are taken to every room in a home mobile through a network of ducts which are connected to vents. The ducts are often built with aluminum tubes or rectangular poles located throughout the house.

Double-wide houses are installed with two parallel ducts that are connected by a central segment, giving it the appearance of a letter H. The ducts should be removed and cleaned periodically to avoid allergies if the family members are sensitive to mold.


  1. Turn off the heating and air conditioning. Remove the vent and registration covers by loosening the screws with a screwdriver. To do this, turn the screws counterclockwise.
  2. Suck on loose dust or debris using a vacuum cleaner with a hose. Place as much of the conduit as possible.
  3. Crawl under the moving house and remove the bolts holding the duct in place. Do this by turning the bolts counterclockwise with a wrench or a socket wrench.
  4. Release the ventilation ducts by gently pulling. Take them out from under the mobile home and set them aside to clean them.
  5. Fill a hand sprayer with an anti-mold disinfectant. Increase the pressure and spray the cleaner inside the ducts.
  6. Moisten a lampas with water and push it into the ducts. Brush all areas of the inner surface thoroughly. Allow the disinfectant to penetrate the ducts for a few minutes.
  7. Rinse the lines with a hose with a spray tip. Let them air dry for two hours.
  8. Replace ducts under moving house. Place them gently in place. Use the wrench to reposition the bolts on the belts, making it clockwise.
  9. Wrap each section with tape resistant to heat and pressure. This will ensure that there are no leaks in the piping system.
  10. Soak each log and ventilation cap for one hour with one gallon of water mixed with 1 tablespoon dishwashing detergent. Rub them with a cleaning brush and rinse with clean water.
  11. Remove the vent cap from the center unit and wipe it with a damp cloth. Remove the filter and suction the motor and spring. Replace the filter and close the unit again.
  12. Replace all lids and vents. Secure with screws. Turn them clockwise to adjust. Turn the main unit back on.

Tips & Warnings:

  • Avoid using products such as bleach to clean the ducts. Their vapors can spread throughout the house at the end of work.
  • Household products stores have anti-mold disinfectants for cleaning ducts.
  • Wear a mask and gloves when you suspect the presence of mold.
  • Turn off the central heating and air conditioning before working with the ducts.
  • This job is difficult, especially in double wide homes. If it seems overwhelming, call a professional service. Beware of professional services that make fake ads: “The sales pitches for this type of job include sweeping but unwarranted announcements about the health benefits of conduit cleaning, affirmations about certification and approval from the Agency for Protection Environment (both false) and annual cleanup recommendations, which is unnecessary as part of your annual service, “says Mike McClintock of the Washington Post.