1. Product Overview
The BestAir A10 Replacement Water Pad is designed to maintain optimal humidification in compatible furnace humidifiers. This water pad is a critical component for the efficient operation of your humidifier, ensuring proper moisture distribution in your indoor environment.

Figure 1: A close-up view of the BestAir A10 replacement water pad, showcasing its corrugated, absorbent material designed for efficient humidification.
2. Compatibility
The BestAir A10 Replacement Water Pad is compatible with the following humidifier models:
- Aprilaire Humidifiers: Models 110, 220, 550, 550A, 558, 10
- Chippewa Humidifiers: Model 220
- Lasko Humidifiers: Model 5000L
- Honeywell Humidifiers: Models HE220A, HE220B
3. Installation Instructions
Follow these steps to replace the water pad in your compatible humidifier. Always refer to your humidifier's specific user manual for detailed instructions and safety precautions.
- Power Off: Turn off the power to your humidifier and furnace at the circuit breaker to prevent accidental operation.
- Locate Humidifier: Identify the humidifier unit attached to your furnace.
- Access Water Pad: Open the humidifier cover or access panel. This usually involves unlatching clips or removing screws. Consult your humidifier's manual if you are unsure.
- Remove Old Pad: Carefully slide out the old water pad and its frame. Dispose of the old pad responsibly.
- Clean Humidifier: While the pad is removed, it is recommended to clean any mineral deposits or debris from the humidifier's water tray and housing.
- Insert New Pad: Place the new BestAir A10 water pad into the frame, ensuring it is oriented correctly according to your humidifier's design. The pad should fit snugly.
- Reassemble: Slide the frame with the new water pad back into the humidifier unit. Secure the cover or access panel.
- Restore Power: Turn the power back on to your furnace and humidifier.
- Test Operation: Verify that the humidifier is operating correctly and that there are no leaks.

Figure 2: Another view of the BestAir A10 replacement water pad, highlighting its structural integrity and material composition, ready for installation.
4. Maintenance
For optimal performance and to prevent mineral buildup, it is recommended to replace the BestAir A10 water pad at least once per heating season, or more frequently in areas with hard water or heavy humidifier usage. Regular inspection of the pad for signs of wear or excessive mineral accumulation is advised.
5. Troubleshooting
- Humidifier Not Producing Humidity: Ensure the new water pad is correctly installed and saturated with water. Check that the humidifier is receiving power and water supply.
- Water Leakage: Verify that all connections are secure and that the water pad is seated properly within its frame and the humidifier unit.
- Pad Does Not Fit: Double-check the compatibility list to ensure the A10 pad is the correct replacement for your specific humidifier model.
6. Product Specifications
| Manufacturer | RPS PRODUCTS INC |
| Part Number | A10 |
| Item Weight | 28.8 pounds (for a package of 6 pads) |
| Product Dimensions | 2 x 9.8 x 10.3 inches |
| Item Package Quantity | 6 |
| ASIN | B01MYDW5B0 |
| Date First Available | February 11, 2017 |
7. Warranty and Support
Specific warranty information for the BestAir A10 Replacement Water Pad is not provided in this manual. For details regarding warranty coverage or to contact customer support, please refer to the manufacturer's official website or the retailer where the product was purchased. You may also visit the BestAir Store for additional product information.