14. Air purifiers
Duration: 3–5 years
$50 is the average price.
Although humidifiers work wonders to enhance comfort and air quality, particularly in the dry months, they have a secret: they only last for three to five years. Even with careful maintenance, humidifiers can lose their effectiveness over time and can harbor bacteria or mold, which they subsequently mist back into your house.
Humidifiers ©Shutterstock/New Africa
Longevity depends on cleaning the unit as directed by the manufacturer and changing the water in the unit on a regular basis. But in order to keep your space’s air quality intact and make sure your humidifier keeps improving your comfort and health, you need to know when it’s beyond its prime.
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