AF Moderate Easy DIY

Whirlpool Dryer AF — Airflow Restriction

Whirlpool Dryer · Error code AF

What AF Means

AF (Air Flow) warns that the dryer detected restricted exhaust airflow. It is a venting warning, not a part failure.

Most Likely Fix

Restricted airflow

PartDryer vent cleaning kit
Typical cost$15-30
Difficultyeasy
Time30 min

Tools: screwdriver

Diagnose first: Clean the entire vent line from dryer to exterior wall — not just the lint screen. AF often follows years of skipped vent cleaning and is a fire risk.

Find this part on Amazon →

If the primary fix doesn't resolve it:

PartBlower wheel
Typical cost$25-50
Find this part on Amazon →

Symptoms

  • Long dry times
  • Clothes still damp
  • AF on the display

Common Causes

1
Clogged lint filter

Clean it every load; fabric-softener film also chokes airflow.

2
Blocked vent run

Lint in the vent hose, wall duct, or exterior flap.

How to Fix It

  1. Clean the lint filter (wash it if it has softener film).
  2. Clean the vent hose and the full wall-duct run.
  3. Clear the exterior vent flap of lint.

Parts You May Need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

Common replacement Dryer Vent Cleaning Kit View on Amazon→

Related Repair Guides

Dryer Smells Like Burning — Stop and Check This →Dryer Stops Mid-Cycle or Shuts Off Before Dry →Dryer Takes Too Long to Dry Clothes — Fixes →

More Whirlpool Dryer Codes

E1 E1 — Inlet thermistor open circuit E2 E2 — Inlet thermistor shorted Err Err — Door Not Fully Closed F01 F01 — Main electronic control board failure F02 F02 — User Interface / Keypad Failure F1E1 F1E1 — Stuck Motor Relay on Main Control

All Whirlpool codes → All dryer codes →

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician.