Dyson offers 2 guarantees. First, there’s a 2-year warranty on cordless vacuums, robot vacuums, fans and heaters, purifiers and humidifiers, hair dryers, hair stylers and hair straighteners. Secondly, there's a 5-year guarantee on corded vacuums, hand dryers and lights. You’ll have to register your Dyson products to take advantage of these guarantees.