“Rust isn’t just ugly—it’s a hidden culprit. When evaporator coils corrode, rust flakes can clog your AC drain line and cause leaks, shutdowns, and water damage.”

This photo shows thick biofilm and slime that was physically removed from a clogged residential air conditioner condensate drain line during an actual HVAC service call in Florida. Drain line blockages like this can cause water leaks, safety switch shutdowns, and costly water damage if not addressed promptly.