Humidifier emits a metallic or rusty smell and water appears discolored.

Safety first: Unplug the unit and discard any discolored water. Do not inhale vapors from obviously contaminated water.

• Step 1 – Thorough cleaning: Empty the tank and base. Clean both with a vinegar solution followed by multiple rinses.
• Step 2 – Inspect metal parts: Examine any metal screws, springs, or weights in the tank cap or float assembly for rust. Replace rusty components or the entire assembly.
• Step 3 – Change water source: Use clean, potable water from a non-rusty source. Consider filtered or distilled water if your plumbing is old.
• Step 4 – Increase maintenance frequency: Empty and refill the tank daily and avoid leaving water in the unit when not in use.

If odor persists after cleaning and part replacement, discontinue use and have the unit inspected for hidden corrosion.