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Complete 2025 AirCare Humidifier Filter-Care Playbook(DIY, rental, pet, hard-water, allergy & smart-home scenarios) Filter Types & When to Replace Them Filter Typical Lifespan Replacement Cost Tell-Tale Signs White wick (1043, 1045) 30–60 days $10–$15 Stiff, brown edges, mold smell Yellow Super-Wick (1041-S) 90–120 days $15–$18 Crumbling, low humidity output HEPA pre-filter (optional) 6 months $8–$12 […]