Having an energy saying dryer appealed to me but after getting repeated D80, D90 messages i found that the dryer duct which runs straight up for 15 feet needed a booster fan which i got installed plus a thorough cleaning of the duct still gives a D80 message on most sensing settings but none any more on the non sensing settings. The lint screen accumulates but never too thick and after every run we do clean it and use a small hand held vacuum to get any left over lint that drops down inside the lint catcher so more of a task to dry clothes than i thought.