The lifespan of a vacuum cleaner partially depends on the strength of the brand and proper maintenance of the device. Some brands boast having a 20-year lifespan or more, although some studies of vacuum cleaners estimate a lifespan of just three years.
According to Discount Vacuum and Sewing, Lindhaus vacuum cleaners, which are declared "among the best in the world," come with an expected lifespan of at least 20 years. The company Miele also claimed its products have a 20-year lifespan, although rival Dyson disputed this claim in April 2014, citing insubstantial evidence. According to Great Vacs, Kirby brand vacuums can last for 25 years. There is disputed evidence on these figures; however, an ECE study at Carnegie Mellon estimates the lifespan of a vacuum to be just three years.