Using this hand dryer is a breeze. Just place your hands under the dryer, and it will automatically start working. You can adjust the air temperature and speed according to your preference. When it comes to maintenance, the replaceable HEPA filter needs to be checked regularly. If it's dirty, you can easily access the separate chamber where the filter is housed and replace it without disconnecting the dryer. Remember to always use the dryer within the 110 - 120 Volt electrical system to avoid any damage. And don't worry, the 5 - year warranty means you're covered for a long time.