A: Hand dryers use high-velocity air streams to remove moisture from hands quickly and efficiently, typically in about 10 to 15 seconds.

A: Yes, hand dryers can be hygienic when properly maintained and used according to manufacturer instructions. They eliminate the need for touching potentially germ-laden surfaces like paper towel dispensers.

A: Compared to paper towels, hand dryers are generally more energy-efficient and environmentally friendly. However, the energy efficiency can vary depending on the specific model and usage patterns.