---
product_id: 2444421
title: "GermGuardian LB4000 Genuine UV-C Replacement Bulb for AC4300BPTCA, AC4825, AC4850PT & AC4900CA Germ Guardian Air Purifiers"
brand: "germguardian"
price: "191.16 DT"
currency: TND
in_stock: true
category: "Germ Guardian"
url: https://www.desertcart.tn/products/2444421-germguardian-lb4000-genuine-uv-c-replacement-bulb-for-ac4300bptca-ac4825
store_origin: TN
region: Tunisia
---

# 10-12 months lifespan 5W UV-C power Reduces airborne germs GermGuardian LB4000 Genuine UV-C Replacement Bulb for AC4300BPTCA, AC4825, AC4850PT & AC4900CA Germ Guardian Air Purifiers

**Brand:** germguardian
**Price:** 191.16 DT
**Availability:** ✅ In Stock

## Summary

> 🦠 Light up your space, not your worries — UV-C power that works as hard as you do!

## Quick Answers

- **What is this?** GermGuardian LB4000 Genuine UV-C Replacement Bulb for AC4300BPTCA, AC4825, AC4850PT & AC4900CA Germ Guardian Air Purifiers by germguardian
- **How much does it cost?** 191.16 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/2444421-germguardian-lb4000-genuine-uv-c-replacement-bulb-for-ac4300bptca-ac4825)

## Best For

- germguardian enthusiasts

## Why This Product

- Trusted germguardian brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Wide Compatibility:** Fits multiple GermGuardian models including AC4300BPTCA, AC4825, AC4850PT, and AC4900CA for seamless upgrades.
- • **Long-Lasting Performance:** Designed to last 10-12 months, ensuring consistent air purification and peace of mind.
- • **Powerful 5-Watt UV-C Light:** Harness germ-fighting UV-C technology to reduce bacteria, viruses, and mold spores without chemicals.
- • **Genuine Guardian Tech Quality:** Maintain peak purifier efficiency with authentic replacement parts trusted by thousands.
- • **Chemical-Free Air Purification:** Fight airborne contaminants naturally, reducing volatile organic compounds for a fresher, healthier environment.

## Overview

The GermGuardian LB4000 is a genuine 5-watt UV-C replacement bulb engineered to fit a broad range of GermGuardian air purifiers. It effectively reduces airborne bacteria, viruses, mold spores, and volatile organic compounds, providing chemical-free air purification. With a lifespan of 10-12 months, this authentic bulb ensures your purifier maintains optimal performance and keeps your indoor environment healthier.

## Description

GermGuardian® LB4000 UV-C Replacement Bulb is a 5-watt bulb. UV-C light helps reduce airborne bacteria, viruses, mold spores*, and works to reduce volatile organic compounds. *Tested with Staphylococcus Albus, and Escherichia Coli, Aspergillus Niger, and Phi-X174. This bulb needs to be replaced every 10-12 month depending on use and environmental factors. It can be used for the GermGuardian® Air Purifier Models AC4300BPTCA, AC4900, AC4825, AC4850, AC4870, AC5300B, AC5350B, AC5350W, AC5900, CDAP4500, and CDAP5500. The use of this genuine Guardian Technologies™ replacement part will maintain the product's performance.

## Features

- 5 Watt bulb with the power of UV-C. UV-C light helps reduce airborne bacteria, viruses, mold spores*, and works to reduce volatile organic compounds.
- UV-C light provides a way to help fight germs without the use of chemical sprays
- Replacement Bulb for GermGuardian Air Purifier Models AC4300BPTCA, AC4900, AC4825, AC4850, AC5300B, AC5350B, AC5350W, AC5900, CDAP4500, and CDAP5500
- Needs to be replaced every 10-12 months depending on use and environmental factors
- IMPORTANT: Use genuine Guardian Technologies replacement parts to maintain product performance.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0055522F6 |
| Accepted Voltage Frequency | 100 to 240 Volts and 50 Hertz to 60 Hertz |
| Additional Features | UV-C light helps to reduce airborne germs |
| Best Sellers Rank | #13,877 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #57 in Pest Control Accessories |
| Brand Name | GermGuardian |
| Bulb Base | GU24 |
| Bulb Shape Size | T |
| Color | Clear |
| Color Rendering Index | 100 |
| Connectivity Technology | Normal bulb |
| Control Method | App |
| Controller Type | Push Button |
| Customer Reviews | 4.7 4.7 out of 5 stars (3,474) |
| Global Trade Identification Number | 00895916000998 |
| Indoor Outdoor Usage | Indoor |
| Item Dimensions W x H | 1.5"W x 4.3"H |
| Item Type Name | GermGuardian LB4000 Genuine UV-C Replacement Bulb for AC4300BPTCA, AC4825, AC4850PT & AC4900CA Germ Guardian Air Purifiers |
| Item Weight | 18.14 g |
| Light Color | White |
| Light Source Operating Life | 334.84 days |
| Light Source Type | UV-C |
| Light Source Wattage | 5 watts |
| Light Type | UV-C |
| Manufacturer | Guardian Technologies, LLC |
| Manufacturer Part Number | LB4000 |
| Material Type | Glass |
| Model Name | GermGuardian LB4000 Genuine UV-C Replacement Bulb for AC4300BPTCA, AC4825, AC4850PT & AC4900CA Germ Guardian Air Purifiers |
| Model Number | LB4000 |
| Number of Items | 1 |
| Package Quantity | 1 |
| Power Consumption | 5 watts |
| Power Source | AC adapter or DC power supply |
| Shape | Tubular(T) |
| Specific Uses For Product | Air purifier UV-C light source |
| Specification Met | CSA |
| Theme | Air Purification |
| UPC | 895916000998 |
| Unit Count | 1 Count |
| Voltage | 120 volts |
| Wattage | 5 watts |

## Product Details

- **Brand:** GermGuardian
- **Bulb Shape Size:** T
- **Light Type:** UV-C
- **Special Feature:** UV-C light helps to reduce airborne germs
- **Wattage:** 5 watts

## Images

![GermGuardian LB4000 Genuine UV-C Replacement Bulb for AC4300BPTCA, AC4825, AC4850PT & AC4900CA Germ Guardian Air Purifiers - Image 1](https://m.media-amazon.com/images/I/5133DjRfFsL.jpg)
![GermGuardian LB4000 Genuine UV-C Replacement Bulb for AC4300BPTCA, AC4825, AC4850PT & AC4900CA Germ Guardian Air Purifiers - Image 2](https://m.media-amazon.com/images/I/314cLGX6rJL.jpg)
![GermGuardian LB4000 Genuine UV-C Replacement Bulb for AC4300BPTCA, AC4825, AC4850PT & AC4900CA Germ Guardian Air Purifiers - Image 3](https://m.media-amazon.com/images/I/51pBPQ7DJ6L.jpg)
![GermGuardian LB4000 Genuine UV-C Replacement Bulb for AC4300BPTCA, AC4825, AC4850PT & AC4900CA Germ Guardian Air Purifiers - Image 4](https://m.media-amazon.com/images/I/21UyG8YF4dL.jpg)
![GermGuardian LB4000 Genuine UV-C Replacement Bulb for AC4300BPTCA, AC4825, AC4850PT & AC4900CA Germ Guardian Air Purifiers - Image 5](https://m.media-amazon.com/images/I/21ieoTOonnL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Can someone provide specifics on how to get to bulb to change it**
A: Take off the big filter on the back, and look above where it was to find two small Phillips screws. Remove those and pop off the cover. Make sure you don't touch the new bulb glass with your fingers! Hold it by the styrofoam and then remove the styrofoam once the bulb is in place.

**Q: Is there a trick to removing the metal panel? I’ve removed the screws but can’t pop it off.**
A: It's difficult to say if "there is a trick" if the model of your air filter unit is unknown.  I would suggest you look up your specific model for bulb replacement procedures.  My Oransi unit required no trick to removing the metal shield.

**Q: Is there a trick to popping off the metal cover? I can’t get it off.**
A: The UV bulb shield is held in by 2 screws which need to be removed.  The metal shield will pull straight out towards you.  You may need to wiggle it a bit and use some force to get it out the first time.  If you need additional assistance, please contact yourfriends@guardiantechnologies.com or call 1-866-603-5900

**Q: Does this fit the oransi finn air purifier**
A: Yes it fix greatly, the blessings is mind blowing of the price for it as well. Thinks for having  the bulbs available to us.

## Frequently Bought Together

- GermGuardian LB4000 Genuine UV-C Replacement Bulb for AC4300BPTCA, AC4825, AC4850PT & AC4900CA Germ Guardian Air Purifiers
- GermGuardian Filter B HEPA Pure Genuine Air Purifier Filter, Removes 99.97% of Pollutants, Wildfire Smoke, Odors, for AC4825, AC4300, AC4850, AC4880, AC4900, CDAP4500, AP2200, Black/Yellow, FLT4825
- Germ Guardian FLT5000 True HEPA Genuine Air Purifier Replacement Filter C for GermGuardian AC5000E, AC5250PT, AC5300B, AC5350B, CDAP5500, and More

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.tn/products/2444421-germguardian-lb4000-genuine-uv-c-replacement-bulb-for-ac4300bptca-ac4825](https://www.desertcart.tn/products/2444421-germguardian-lb4000-genuine-uv-c-replacement-bulb-for-ac4300bptca-ac4825)

---

*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-08-23*