A attic fan typically lasts 15–25 years. However, usage, maintenance and environmental factors can shorten or extend its lifespan.
Average lifespan of a attic fan
An attic fan can last 15–25 years, although motors and bearings may require replacement sooner.
What affects how long a attic fan lasts
The lifespan of a attic fan depends on factors such as operating hours, temperature extremes, maintenance and installation. These elements influence wear and can either extend or reduce its typical life.
Signs a attic fan needs replacing
Common signs that a attic fan is nearing the end of its life include motor noise, reduced airflow, vibration or failure to start. Noticing these cues helps you plan for replacement.
How to make a attic fan last longer
To extend the life of your attic fan, follow the manufacturer’s maintenance recommendations. Regular cleaning, proper usage and timely minor repairs can help it serve longer.
When replacement is necessary
If your attic fan shows persistent failures, safety issues or is beyond its typical lifespan, replacing it with a new model is usually more cost‑effective than repeated repairs.