I have the model below this one, the GSD-1000. This was before the Power Clean platform came out. Mine is dated from 79. It does heat the main wash and final rinse, though the heater is more about maintaing temperature rather then raising it. I don’t think GE has ever had forced air drying. That being said this would have a full steel frame around the tank, similar to a KA. These were also the first to have GEs multi orbit system , super racks, and the passive water filtration. They are also quite easy to work on. My Ultra Wash is probably a smidge better when it comes to really nasty baked on soil, but the Potscrubber can certainly hold its own and cleans most loads with no problems.