The answer to 'how long does dehumidifier last' is that a typical dehumidifier can last 5-10 years with proper maintenance and care. The lifespan of a dehumidifier depends on several factors, including the quality of the unit, how often it is used, and how well it is maintained.
Higher-quality dehumidifiers from reputable brands tend to last longer than cheaper models. Units that are used frequently in humid environments will also wear out faster than those used occasionally. Regular filter cleaning, coil cleaning, and other routine maintenance can help extend the lifespan of a dehumidifier as well.