New Dryer Vent Airflow Meter by Justin Higgins | May 5, 2014 | News | 0 comments During a dryer vent cleaning a vane anemometer is used to take a before and after airflow reading of the dryer vent. By taking this reading our technicians can determine if the vent needs cleaning at the next annual inspection. Submit a Comment Cancel replyYou must be logged in to post a comment.