What factor can lead to damage in louvers of a whole house fan?

Improper installation or wear over time is a significant factor that can lead to damage in the louvers of a whole house fan. When louvers are not installed correctly, they may not open and close as intended, which can cause stress on the mechanisms and lead to premature failure. Additionally, over time, due to the natural wear and tear from regular operation or environmental effects, the components may degrade. Factors such as fatigue in materials, corrosion, or misalignment can result from improper installation or regular use, increasing the likelihood of damage to the louvers.

In contrast, while exposure to excessive sunlight may contribute to wear, it is a less direct cause of damage compared to the impacts of installation issues. Regular maintenance is essential for longevity, but neglecting it does not immediately implicate the integrity of the louvers in the same direct manner as installation problems. Openness during winter storms presents a risk for airflow management and energy efficiency, but it does not inherently cause damage to the louvers themselves unless they are already compromised from previous issues.