Powerful airflow. Now 75% quieter. To make fans work quietly, manufacturers use slow-running motors to spin the blades. This reduces noise but also reduces power, producing weak airflow. To make powerful fans, they use fast motors to spin the blades - but fast motors create more noise. Powerful & quiet is very difficult to achieve in a conventional fan.
The new Dyson Cool fans have been engineered to be quieter, and use a brushless DC motor that consumes 30% less energy than AM01 - yet generate powerful airflow.