The frequency of cleaning for dryer vent systems varies from home to home. In general dryer vents should be inspected and cleaned every year. Regular cleaning and inspection of the entire dryer vent system helps maintain maximum exhaust capability resulting in normal operating temperatures and a longer lifespan for your machine.
The main factors for cleaning frequency are the following: the age and type of dryer being used, the length and type of connector vent, the length and direction that the dryer vent travels to the outside of the building, the number of bends or elbows in the system, and the quantity of laundry dried in a given year.
It’s shocking that many of the “professional” dryer vent cleaners ignore the interior of the cabinet when performing a dryer vent cleaning. These companies have given homeowners a false security that their “system” is totally clean. Our technicians have the training and experience to perform a thorough cleaning.
Step 1: Interior of the Dryer Cabinet
“The lint produced by clothes tumbling in a dryer is normally trapped by the lint filter. However, some lint invariably escapes and accumulates on the inside of the dryer cabinet. At least once a year, check the inside of the cabinet, and clean it if necessary. Do this more frequently if the dryer is used heavily.”
“The most important step in cleaning the dryer is to remove any lint buildup around the motor and gas burner or heating element.”
Source: Family Handyman Magazine
Step 2: The Transition Duct
The transition duct that connects the dryer to the wall or floor outlet, should be removed and cleaned with a 4 inch brush. If the duct is not made of a UL-approved material, it should be replaced.
Step 3: Dryer Vent or Ducting
The entire vent or ducting that leads to the exterior of the home should be thoroughly cleaned and inspected. Brushes or compressed air tools that “squeegee” the interior surface can be directed through the entire duct either from the inside or outside of the home.
Step 4: Exhaust Outlet or Hood
Removing all lint an debris from the exterior exhaust outlet should be performed during a thorough cleaning. Verifying that any moveable flaps or louvers if applicable are in proper working order should also be included. This exterior check should also be performed by the homeowner on a quarterly basis.
Dryer Vent Recommendations:
1. Dryer duct must be at least 4″ in diameter.
2. Concealed ducts must be rigid metal duct.
3. Duct joints shall be secured with metal tape.
4. Pipe connections are installed to point in the direction of the airflow.
5. Dryer vents shall be independent of all other systems and terminate outdoors.
6. Outside hood should be equipped with a functioning back draft damper.
7. Use only flexible metal connectors between the dryer and duct.
8. Outside exhaust outlet should protect against rodents and birds.