Dryer takes too long to dry. Feels warm when I open it up, but each load takes multiple drying cycles to dry. I checked the vent for clogs. I empty the lint trap after every cycle. The heating element was even glowing orange when I opened the dryer up to check.

If you have a top lint filter turn the dryer on pull the lint filter out and put your hand in it and see if you have good suckion,if not you still have a clog-mike

If your dryer is heating, but you are experiencing longer dry times and poor drying efficiency, the following link can give you some items to check before you assume there is a malfunction with your dryer:

http://www.fixya.com/support/r3578821-dryer_takes_too_long_to_dry

A glowing bright red heating element is not necessarily a good thing. The element should actually cycle on and off as the dryer cycle runs. If it is glowing steady and really bright, its a good sign that you may have a clog somewhere. The number one cause of dryer heat related problems is poor exhaust ventilation. If not vented properly, a dryer will not dry efficiently, will take longer than required to dry, and will cause the heating circuits to overheat to the point of failure. The dryer will actually seem hotter as the heating circuits begin to overheat. This is also the source of many fire hazards if not resolved. Read through the link provided and review some of the potential causes.

If you have any questions, please post back and let me know. Please include your MODEL NUMBER (if it is different from the one you listed this question under), so I can determine how your dryer is configured. I hope you find this information is helpful.

NOTE: If you thoroughly check everything and still have problems let me know. The problem could be related to a thermostat beginning to fail.