We recently moved to a new place and our dryer started only heating a little bit--we'd have to run like 3-4 cycles to just dry one large load. Our dryer is old and simple, and I figured it couldn't hurt to change a few parts--so I swapped out the heating coils, fuse, and two temperature controls, just in case. It helped a LOT but still wasn't up to it's usual drying capacity. I did a little further research and discovered that our vent system might be clogged. Got that cleaned out (actually replaced--found a part that was too constricted in the crawl space)--and now it's back to working like charm! Overall, decreased the fire hazard probability at our house with the new duct work, and our dryer should last a long time now--all while still spending far less than a new dryer would cost! And the parts replacement was easy peasy--although you definitely want to watch the sharp edges of the back dryer panel--I recommend gloves.