1. Introduction
This manual provides instructions for the proper replacement of the GermGuardian LB5000 UV-C Bulb and the GermGuardian FLT5250PT True HEPA Genuine Air Purifier Replacement Filter C. These genuine replacement parts are designed to maintain the optimal performance of your compatible GermGuardian air purifier, ensuring continued air purification and germ reduction.
2. Product Compatibility
The GermGuardian LB5000 UV-C Replacement Bulb and FLT5250PT True HEPA Filter C are compatible with the following air purifier models:
- GermGuardian AC5000, AC5000E
- GermGuardian AC5020, AC5220, AC5250, AC5250PT
- GermGuardian AC5300B, AC5350B, AC5350W
- GermGuardian CDAP5500, CDAP5500WSP
- PureGuardian AP2800CA
- Black + Decker BXAP250
- Lowe's Idylis IAP-GG-125

Figure 2.1: Compatible Air Purifier Models. This image displays several GermGuardian, PureGuardian, Black + Decker, and Idylis air purifier units, indicating their compatibility with the replacement filter and bulb.
3. Installation Instructions
Always ensure the air purifier is unplugged from the power outlet before attempting any installation or maintenance.
3.1. Replacing the FLT5250PT True HEPA Filter C
- Power Off and Unplug: Turn off the air purifier and unplug it from the electrical outlet.
- Access Filter Compartment: Locate and open the filter compartment cover on your air purifier. Refer to your air purifier's specific user manual for exact instructions on accessing the filter.
- Remove Old Filter: Carefully remove the used True HEPA filter and pre-filter. Dispose of the old filter responsibly.
- Install New Filter: Insert the new GermGuardian FLT5250PT True HEPA Filter C into the compartment. Ensure it is seated correctly and securely. The filter typically includes a pre-filter layer (charcoal) and a HEPA layer.
- Close Compartment: Close the filter compartment cover securely.
- Reset Filter Indicator (if applicable): Plug in the air purifier and turn it on. If your model has a filter replacement indicator, follow your air purifier's manual to reset it.

Figure 3.1: True HEPA Filter and Pre-Filter Components. This image illustrates the multi-layer filtration system, including the True HEPA filter and the pre-filter with activated charcoal, designed to capture various airborne particles and odors.
3.2. Replacing the LB5000 UV-C Bulb
- Power Off and Unplug: Turn off the air purifier and unplug it from the electrical outlet.
- Access UV-C Bulb Compartment: Locate the UV-C bulb compartment. This is often near the filter area or accessible through a separate panel. Consult your air purifier's manual for precise location and access.
- Remove Old Bulb: Carefully unscrew or unclip the old UV-C bulb. Handle the bulb by its base, avoiding direct contact with the glass.
- Install New Bulb: Insert the new GermGuardian LB5000 UV-C Bulb. Ensure it is securely fastened. Do not touch the glass part of the new bulb with bare hands; use a cloth or gloves if necessary, as oils from skin can reduce bulb life.
- Close Compartment: Close the UV-C bulb compartment cover securely.
- Reset UV-C Indicator (if applicable): Plug in the air purifier and turn it on. If your model has a UV-C bulb replacement indicator, follow your air purifier's manual to reset it.

Figure 3.2: GermGuardian LB5000 UV-C Replacement Bulb. This image shows the tubular UV-C bulb with its base, indicating it is a genuine manufacturer replacement part.
4. Maintenance
Regular replacement of both the True HEPA filter and the UV-C bulb is crucial for maintaining the efficiency and effectiveness of your GermGuardian air purifier.
- Filter Replacement: The FLT5250PT True HEPA Filter C should typically be replaced every 6-8 months, depending on usage and air quality. Refer to your air purifier's manual for specific recommendations and filter indicator warnings.
- UV-C Bulb Replacement: The LB5000 UV-C Bulb generally lasts for approximately 10-12 months of continuous use. Replace the bulb when its effectiveness diminishes or when the UV-C indicator light (if present) signals replacement.

Figure 4.1: Genuine GermGuardian Replacement Filter Packaging. This image displays the packaging for the GermGuardian FLT5250PT filter, highlighting the importance of using genuine parts for optimal performance, quality assurance, and proper fit.
5. Specifications
| Feature | Specification |
|---|---|
| Product Type | UV-C Replacement Bulb & True HEPA Filter |
| UV-C Bulb Model | LB5000 |
| Filter Model | FLT5250PT (Filter C) |
| UV-C Bulb Wattage | 8 watts |
| UV-C Bulb Light Type | UV-C |
| UV-C Bulb Color Temperature | 6000 Kelvin (White Light) |
| UV-C Bulb Base | GU5.3 |
| Filter Type | True HEPA with Pre-Filter & Activated Carbon |
| Filter Efficiency | Captures 99.97% of airborne particles as small as 0.3 microns |
| Power Consumption (Bulb) | 8 watts |
| Item Weight | 1.76 ounces (for the bulb) |
6. Troubleshooting
If your air purifier does not operate correctly after replacing the filter or UV-C bulb, consider the following:
- Power Connection: Ensure the air purifier is securely plugged into a working electrical outlet.
- Component Seating: Verify that both the HEPA filter and the UV-C bulb are correctly and firmly seated in their respective compartments. Loose connections can prevent operation.
- Compartment Covers: Confirm that all filter and bulb compartment covers are closed and latched properly. Some air purifiers have safety switches that prevent operation if covers are open.
- Reset Indicators: If applicable, ensure you have reset any filter or UV-C bulb replacement indicators according to your air purifier's manual.
- Genuine Parts: Always use genuine GermGuardian replacement parts to ensure compatibility and proper function. Non-genuine parts may not fit correctly or perform as expected.
7. Important Safety Information
- Always unplug the air purifier before replacing any parts.
- Do not look directly at an illuminated UV-C bulb, as it can cause eye damage.
- Handle the UV-C bulb by its base to avoid touching the glass. If you touch the glass, wipe it with a clean, dry cloth before installation.
- Keep replacement parts out of reach of children.
- Dispose of used filters and bulbs according to local regulations.
8. Warranty and Support
Using genuine GermGuardian replacement parts is essential to maintain the performance and validity of your air purifier's warranty. For specific warranty details or further support, please refer to the original user manual of your GermGuardian air purifier or visit the official GermGuardian website.







