Which wick filter does the AIRCARE 29971 take?

AIRCARE 29971 humidifier wick filter

AIRCARE 29971: the wick filter is part HDC1. Source: AIRCARE, checked November 6, 2026.

Wicks harden with minerals and soak up less water over time.

1Wick filterHDC1

Part numbers come from AIRCARE (source), checked November 6, 2026. Amazon buttons open a search for the part number; we may earn a commission.

On a label on the base, often under the water tank.