The Tier1 replacement for the Aprilaire 10 is a whole-house humidifier evaporator water panel designed as a direct-fit replacement for Aprilaire Models 110, 220, 500, 500A, 500M, 550, 550A, and 558 humidifiers. It measures approximately 10" x 13" x 1-5/8" and features a high-absorbency design with an anti-scale coating to maximize moisture output and extend panel life.

Tier1 recommends replacing the Aprilaire 10 water panel at least once per heating season, or every 6 months under heavy use. Homes with hard water or high humidifier run times may need more frequent replacement due to accelerated mineral scale buildup on the evaporator pad. Replacing the panel on schedule maintains proper humidity output and prevents airflow restriction inside your Aprilaire humidifier.

Unlike drinking water filters, the Aprilaire 10 water panel is an evaporator pad (not a particulate filter), so it does not carry a micron rating or NSF/ANSI 42/53/401 certification. Instead, it is constructed from expanded aluminum mesh coated with a ceramic-clay anti-scale compound that wicks water and releases evaporated moisture into your HVAC airflow, trapping minerals on the pad so they don’t circulate through your home.

Turn off power to your furnace and humidifier, then open the humidifier’s front cover and slide out the distribution tray and old water panel frame. Remove the spent panel from the frame, insert the new Tier1 Aprilaire 10 panel with the colored stripe facing up (toward the distribution tray), and reinstall the frame and tray. Close the cover, restore power, and run your humidifier — no tools required, and installation typically takes under 5 minutes.

The Tier1 Aprilaire 10 is engineered to meet or exceed OEM specifications for absorbency, scale resistance, and moisture output, while costing significantly less than the genuine Aprilaire #10 panel. It uses the same expanded aluminum core and anti-scale ceramic coating, ensuring your Aprilaire 110, 220, 500, 550, or 558 humidifier delivers consistent whole-home humidity throughout the heating season.