Using this hand dryer is easy. Just place your hands under the dryer, and it will automatically start. You can adjust the air temperature and speed to your preference. When it comes to maintenance, check the HEPA filter regularly. Since it's in a separate chamber, you can remove it without disconnecting the dryer. Replace the filter as needed to keep the air clean. Remember to keep the dryer away from water and use it within the 208 - 240 Volt power range. With a 5 - year warranty, you can use it worry - free.