Energy Efficient Heat Pump No venting requiredThe heat pump technology uses a fraction of the energy to dry clothes so its lighter on your electricity bill. LG Condenser Dryers removes the need to fit venting kits in your laundry making installation easier.Prevent over Drying with Sensor DryThree sensors on the LG dryer monitor the heat exchange, moisture and air temperature for optimal drying results. The sensors automatically control the drying time and temperature based on the selected program and help prevent over drying.Included Accessories The Stacking Kit allows you to securely stack this machine on top of your front load washing machine. This is suitable for both 550mm 600mm LG washing machines with the Included accessories. The Drying Rack is great for items that you don't want to tumble dry such as shoes or backpacks.More Drying Cycles TroubleshootingMore Drying Cycles: View usage on a NFC enabled Android device, Tag On uses Near Field Communication (NFC) technology to download more drying cycles view history usage. Troubleshoot: With a smartphone the LG Smart ThinQ app the dryer can "talk for itself" to find a solution to help save time money on unnecessary call outs.