Perm press: 30 mins
Frigidaire 2140 washer/1442 gas dryer.
All-cotton clothes with wrinkle-free finish (I think this retards water absorbtion): 30 minutes on Medium Perm Press setting. This adds some minutes because Perm Press cools all the way down to ambient temp to "lock out wrinkles" after clothes are dry. Clothes at the end of this cycle don't feel warm but "cool" and close to room temperature.
Towels-heavy cottons: 45-50 minutes on High heat.
The max spin speed on the 2140 is only 950. I keep the spin speed on "Maximum", which probably is 950 for Heavy cycle but may be less for "Perm Press" cycle, which does not have a long spin (to prevent setting wrinkles).
My guess is that the drying times would be less with a machine with higher rpm. The new Frigidaire models spin at 1200-1300 (similar to Electrolux) and when/if my 2140's spider kicks the bucket, I would most likely upgrade to the newer models, pending acceptable reviews of course.
My dryer vent takes a rather tortuous route to the outside. The appliances are along the rear wall of the garage, which shares a common wall with the house, so the vent can't go through the wall behind the dryer. Instead, the house builder ran a vent through the garage slab to the nearest outside wall (about twelve feet/3.5 meters away), where it emerges from the exterior wall just above ground level. Thus, it makes four 90-degree turns to reach the outside, which is a risk for clogging from lint.
When I bought a new GE dryer in 1997, it seemed as if the drying times were excessively long, like >2 hours. I had the vent checked by a duct cleaning service and it was clogged with lint. Drying times fell by more than 50% after the duct cleaning, so I learned my lesson.
I have a 20 foot extension hose for my Shop Vac and clean out the duct once a year. I also just bought---but have not yet used--one of those duct cleaning kits that attach to a power drill (electric or cordless) with a narrow nylon stem and a brush that rotates when the drill is activated. It is difficult for the Shop Vac hose to make the 90 degree turns, so hopefully this device will improve the cleaning. When you use it, you are supposed to attach one end of the duct to a vacuum (with a supplied duct-to-vacuum adapter) and then attack the duct with the revolving brush on the opposite end.