Aprilaire 10 Water Panel Evaporative Humidifier Filter
The Aprilaire 10 Water Panel is the compact evaporator core designed specifically for Aprilaire 500 series bypass humidifiers. It features the same hydrophilic ceramic-coated aluminum honeycomb as the 35 series, scaled to fit smaller HVAC supply ducts.
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3-Year True Cost of Ownership Model
Targeted for E3 coarse particles (dust, lint, large pollen) to protect equipment.
Deep pleat geometry delivers high surface area and minimal static pressure drop.
Thermal beverage board frame with wire backing to prevent media collapse under blower load.
Bulk multi-pack procurement typically reduces annual per-filter cost by 25% to 40%.
- Genuine OEM Aprilaire quality ensures tight seal in the scale control frame
- Porous ceramic coating distributes water evenly to prevent dry airflow
- Traps hardness minerals inside pad to prevent furnace duct scale
- Economical annual replacement cost ($14/year)
- Only fits 500 series units (check your humidifier model badge)
- Must be replaced annually (cannot be acid-washed)
Verified Engineering Specifications
| Nominal Dimensions | 9.5x10x1.75 | Actual Dimensions | 9.75 x 10.0 x 1.75 in |
|---|---|---|---|
| Filter Depth | 1.75 inch | Media Construction | Slit-expanded aluminum mesh with porous ceramic water-retention coating |
| Replacement Filter Cost | $$14.00 | Replacement Interval | Every 12 months |
| Annual Consumable Cost | $14.00/yr (1 pad per heating season) | Compatible Equipment | Aprilaire models 110, 220, 500, 500A, 500M, 550, 550A, 558 |
Our Take on the Aprilaire 10 Water Panel Evaporative Humidifier Filter
The exact OEM evaporator panel for Aprilaire 500 series systems. Reliable seasonal performance that restores comfortable indoor humidity in dry climates.
Filtration Performance Note
Evaporates up to 12 gallons of moisture per day under normal furnace runtime.
Installation, Airflow Direction & Maintenance Protocol
Slide out frame, remove old scale-crusted pad, place new panel with colored dot facing UP, snap into humidifier.
Common Questions About the Aprilaire 10 Water Panel Evaporative Humidifier Filter
What is the difference between Aprilaire 10 and 35?
Aprilaire 10 measures 9.75 x 10 x 1.75 inches for 500 series humidifiers. Aprilaire 35 measures 10 x 13 x 1.75 inches for larger 600 and 700 series units.
Which direction does the colored dot go?
The painted indicator dot on the edge of the Aprilaire 10 must face UP toward the water feed tube.
Can I use an off-brand water panel?
Off-brand pads often have uneven ceramic coating, causing water to channel straight into the drain rather than evaporating into your ductwork.
Direct Compatible Alternatives
Aprilaire 35
When to choose: For larger Aprilaire 600/700 series units
Filtrete 1500
When to choose: Pair with a clean furnace filter for winter air comfort