The most common causes for a whirlpool duet dryer not heating are.
Whirlpool duet dryer not heating youtube.
Lint build up inside the machine or dryer venting to prevent lint build up be sure to clean the lint out of your dryer at least once every two years and clean out your venting at least once a year.
This video covers the most likely issues with a standard whirlpool style dryer that cause it not to heat and dry your clothes.
Whirlpool duet washers and dryers have good performance and reliability but as with any appliance sometimes things go wrong.
A dryer full of clothes that are not dry after an hour or so is one of those things.
No drying or poor drying can have several causes many of which are quite simple to fix.