I have a Whirlpool DX8650 electric dryer. It does not dry the clothes efficiently. It is producing heat, and from what I can make of other Yahoo! Answers either the heating element is working or it's not (so it's probably some sort of an obstruction from the vent and the heating element should be ok). Having said that, I'll be pulling it out to check what the problem is. The dryer is about 10 years old so while I'm pulling it out to check the the vent/hose, I figured I might as well replace the heating element because it's not like I'll be pulling it out again & getting behind the dryer anytime soon. After visiting the manufacturer's web site, I got the part list. I'll be replacing the heating element for sure, but wasn't sure if I should order & replace these parts as well (as I'm not sure how they work with the heating element) :

- Box Heater
- Thermostat
- Wire Kit (For heater element wiring harness repair)
- Fuse, Thermal
- Thermal, Cut-Off (Hi-Limit)
- Box Heater
- Wheel, Blower
- Housing, Blower

I just want to make sure that while I'm back there inspecting the hose, that I take advantage of my time there and replace some very old parts which I know will eventually crap out (which I'm sure they will soon because like I said, it's a 10 year old model).

Before you answer, take a look at the manufacturer's web site to see a PDF of the schematics / parts list.

http://www.whirlpoolparts.ca/repair_parts.php

(In the top left hand corner you'll see a dialog box that says "Model Search"; just type in WX8650).