H/C Humidifier Filter (Pad) - HCWB2-17/18 & HCWB3-17/18 (Stock #35)
White power or dust is normal to be on the humidifier replacement pads. This substance is put on the metal pads to help adhere the water to get maximum humidification in your home. Rust or major discoloration is a good sign that it is time to replace the pad for optimal performance. Typically, homeowners change their pads once a year no matter what. This material is not a "washable" material and should be changed yearly.
Stock # 35 Replacement Pad (Filter) for:
Will also fit:
Also Fits Aprilaire Models:
Manufacturer Part No: