The answer to 'how long will humidifier last' is that the lifespan of a humidifier can vary widely, typically ranging from 5 to 10 years with proper maintenance. The actual lifespan depends on factors like the type of humidifier, how often it's used, and how well it's cared for.
Whole-house humidifiers that are professionally installed and maintained can last at the higher end of that range, around 8-10 years. Portable humidifiers used in individual rooms may only last 5-7 years on average, as they tend to get more frequent use and may not be cleaned as regularly. Proper filter changes, cleaning, and descaling are key to maximizing a humidifier's lifespan.