Wick filter
Wicks harden with minerals and soak up less water over time.
Wick filter
Wicks harden with minerals and soak up less water over time.
1Wick filterHAC-504Part numbers come from Honeywell (source 1, source 2), checked November 6, 2026. Amazon buttons open a search for the part number; we may earn a commission.
Where the model number is
On a label on the base, often under the water tank.