How to Clean a Tumble Dryer Condenser Box Unit In this guide, we will explain how to clean the condenser box in your condenser tumble dryer. This guide applies to all brands of tumble dryers, including Electrolux, Zanussi, AEG, Hotpoint, Creda, Ariston, Beko, Bosch, Neff, and Siemens. Keeping your condenser box clean and efficient can