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Most ceiling fans have a lifespan of anywhere from five to 15 years or 10 years on average. Just how long your ceiling fan lasts depends on the quality of the parts, how much it’s used, and how well you maintain it. A fan with a weak motor that runs on the medium setting nonstop is likely to have a shorter lifespan compared to a fan with a powerful motor that runs on the slowest setting for air circulation.

A whole-house fan will not allow you to control your home's temperature and keep it at a specific temperature like a traditional AC unit would. You rely on the night and morning weather to cool your home down efficiently. Also, whole-house fans can be loud and may allow cold air to enter your home in the winter. They also require penetrations through your exterior walls or roof, which could invite water and pests in if they aren’t installed properly.

While ceiling fans shouldn’t get loose over time, they still can—especially if they’re installed incorrectly. A wobbling or tilted ceiling fan can shift the screws out of place, causing it to loosen and become a fall risk. It’s important to tighten screws and balance blades as soon as you notice that they’re misaligned or uneven to prevent the ceiling fan from loosening further and becoming a hazard.

Leaving an exhaust fan on constantly isn’t ideal. While it helps remove moisture and odors, continuous use will lead to wear and tear, higher energy costs, and even fire risks if the motor overheats. Bathroom fans should run for 20 to 30 minutes after a shower, while kitchen exhaust fans should be used only when cooking or clearing air.