Steam generators are suitable for large amounts of laundry. They have a large steam output and a large water tank. Steam irons have a lower steam output and a smaller water tank. They're suitable for small amounts of laundry. Clothes steamers have a low steam output. This is useful if you want to make 1 or 2 pieces of clothing wrinkle-free.
During ironing, limescale builds up in your iron. This reduces the steam power. Limescale can also make stains on your clothes. You can prevent this by doing regular maintenance. Maintenance-friendly irons have a limescale collector or cleaning program. With this, you can descale the iron easily and fast.