Introduction
This manual provides essential instructions for the proper installation, operation, and maintenance of your Air Filter Factory replacement humidifier wick filter, designed for Kenmore 154120 humidifiers. Following these guidelines will ensure optimal performance and longevity of your filter.

Image: Air Filter Factory Humidifier Wick Filter, showing its honeycomb structure.
Setup and Installation
Before installing, ensure the replacement filter matches the model tag on your humidifier. The model tag is typically located on the bottom or side of the humidifier unit.
To install the new wick filter:
- Turn off and unplug your humidifier.
- Remove the old filter from the humidifier.
- Carefully insert the new Air Filter Factory wick filter into the designated slot. Ensure it is seated correctly.
- Plug in and turn on your humidifier.
Video: Demonstrates the replacement process for the Kenmore 154120 Humidifier Wick Filter. This video shows how to handle and install the filter.
Operating Guidelines
For optimal performance and to extend the life of your humidifier wick filter, consider the following:
- Water Quality: Using filtered water is recommended. Hard water can shorten the filter's lifespan due to mineral buildup.
- Room Temperature: If your furnace runs consistently above 72 degrees F (22 degrees C), your humidifier may work harder to maintain air moisture, potentially leading to a drier wick.
- Filter Orientation: Flip the filter over after each tank refill to ensure even saturation and prolong its effectiveness.

Image: Visual tips on how to make humidifier wicks last longer, including using filtered water and maintaining room temperature.
Maintenance
Regular maintenance is crucial for the efficiency and longevity of your humidifier filter.
- Replacement Frequency: It is recommended to change the wick filter at least every 45 days for best results.
- Filter Condition: Discoloration of humidifier wick filters is normal and will vary depending on water quality. This does not necessarily indicate a need for immediate replacement unless performance is affected.

Image: A visual reminder to replace humidifier filters every 30-45 days for optimal performance.
Troubleshooting
If you experience issues with your humidifier's performance after installing the new wick filter, consider the following:
- Reduced Moisture Output: Check if the filter is properly saturated. Ensure you are using filtered water if hard water is an issue, as mineral buildup can impede wicking.
- Short Filter Lifespan: High furnace temperatures (above 72°F) can cause the humidifier to work harder, drying out the wick faster. Consider adjusting room temperature or increasing filter replacement frequency.
- Unusual Odors: Ensure regular cleaning of the humidifier unit itself, as stagnant water or bacterial growth can cause odors, not typically the filter itself.
Specifications
| Feature | Detail |
|---|---|
| Part Number | 154120 |
| Compatible Device | Humidifier |
| Material Type | Aluminum, Paper Pulp |
| Item Weight | 5.3 ounces (0.15 Kilograms) |
| Product Dimensions | 10.8 x 8.1 x 2.8 inches |
| UPC | 842477100322 |
| Manufacturer | Air Filter Factory |
Warranty and Support
For any questions regarding the product, installation, or performance, please contact Air Filter Factory customer support. Specific warranty details may be available on the manufacturer's official website or product packaging.
Visit the Air Filter Factory Store for more information.