If your clothes dryer is no longer getting your laundry completely dry, it might not be your dryer’s fault. You might want to take a look at your washer.
Your washer might not be spinning the excess moisture out of your laundry, before it even goes into the dryer. If you notice your laundry is still heavy and wet at the end of your washer’s cycle, this could indicate that the problem is your washing machine and not your dryer.
When’s the last time you cleaned your dryer venting?
Another common problem for dryers that do not dry all the way, is clogged dryer duct work. Clogged dryer venting prevents proper air flow circulation and is actually the cause of many household fires. Be sure to check and clean your venting every few months and to clean the lint filter screen before or after each load.
Additional parts to check include the blower wheel which moves from the heating element to the drum. If it breaks or stops working, heat and air might not be circulating through your dryer properly. The heating element could also be defective, which could lead to increased drying times.