Rust or corrosion on the cabinet or drain pan may suggest moisture buildup and age-related wear

https://actroubleshooting315.yousher.com/why-a-reliable-ac-company-matters-in-winter-haven-ac-emergencies

Rust or corrosion on the cabinet or drain pan may suggest moisture buildup and age-related wear. Keep the area dry and have a technician evaluate for hidden leaks.