Dryer Vent Cleaning Checklist for Homeowners

Before the Service Appointment

Preparation before your dryer vent cleaning appointment ensures the technician can work efficiently and that you get the most from the service. Clear the space around the dryer so the technician can access the back connection easily. Make sure the dryer is off and cooled. Know approximately where your exterior vent cap is located — wall or roof — and whether it's accessible from ground level.

If you have concerns or have noticed specific symptoms (slow drying, burning smell, LG warning codes), note these to tell the technician at arrival. These details help prioritize the inspection.

What Should Happen During the Service

During a proper professional cleaning, you should expect: an initial assessment of your vent run configuration, airflow measurement before cleaning begins, cleaning the full duct length using rotary brush with vacuum extraction (not just blowing air through), checking and clearing the exterior vent cap, inspecting the flexible connector between the dryer and wall, and a final airflow measurement after cleaning.

A technician who skips the before-and-after airflow testing is skipping the verification step — ask for it specifically if it's not mentioned.

After the Service: What to Verify

Run a test drying cycle immediately after the technician leaves. Clothes should dry completely in a single normal cycle. Check the exterior vent cap during this test cycle — you should see the flap opening fully with strong airflow.

For smart dryers with airflow monitoring (LG Flow Sense, Samsung, etc.), confirm that any blockage warning codes have cleared. If codes persist, call the cleaning company — something may need follow-up.

Annual Documentation to Keep

After each professional cleaning, file the service documentation: date, company, findings, and any recommendations. Track your cleaning history in your home maintenance records. This history is useful for future service providers, for home sale disclosure, and for any insurance or warranty claims related to your dryer.