Clues that you may need to clean out the blower (fan wheel) in your Asko dryer:

– The dryer heats but takes a long time to dry the clothes. Also see this page.

– The dryer makes a disconcerting rumbling noise and/or vibrates while running.

Just be careful in there, you never know what you’ll find. You may even run into the dreaded dryer blower lint rat:

NOTE: I am a professional– do NOT try handling the lint rat like this at home!

You can order parts for your dryer or get more help in the Samurai Appliance Repair Forum.