Humidifier pad
Wicks harden with minerals and soak up less water over time.
Humidifier pad
Wicks harden with minerals and soak up less water over time.
1Humidifier pad35Part numbers come from Aprilaire (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.