Heat pump Technology (A+++ Energy Rating): Want great drying results using less electricity? Heat Pump Technology is gentler on your clothes than traditional condenser or vented tumble dryers . And with top rated A+++ energy efficiency they won’t cost the earth to run. OptimalDry: Who says you can't tumble dry without wasting energy? Our temperature sensors adjust the drying time to do exactly that. Smart Control +: Who wouldn't want to control and monitor your washing anytime, anywhere*? You can with the SmartThings app *. *App available on Android and iOS devices. An internet connection is required. Hygiene Care: What germs? Remove dust, mites and germs by putting your wet or dry clothes in your tumble dryer . Reversible Door: Make your clothes easily accessible, wherever you place your Samsung tumble dryer in the home. With the reversible door, choose which side works best for you.