Keep your Philips air purifier running at peak performance with the FLT4825 HEPA Filter B replacement, a high-efficiency filtration system engineered for seamless compatibility with select Philips Series 2000/3000 models. This complete filter includes a True HEPA core and an integrated activated carbon pre-filter, working together to capture 99.97% of airborne particles as small as 0.3 microns while neutralizing household odors from pets, cooking, smoke, and VOCs.

Designed as a direct replacement for Philips original Filter B (FLT4825), it ensures your home breathes cleaner, fresher air—all while offering exceptional long-term value.

✅ Confirmed Compatible Models

This FLT4825 Filter B replacement fits the following Philips air purifier models:

• AC4825 / AC4825/10
• AC4300 / AC4300/10
• AC4800 / AC4800/10
• AC4900 / AC4900/10
• AC4850 / AC4850/10

⚠️ Important: This is Filter B only (the main HEPA + carbon combo filter). It does not include Filter A (the washable pre-filter). Your purifier requires both Filter A and Filter B to operate properly.

🌬️ Dual-Action Filtration: True HEPA + Activated Carbon

🔹 True H13 HEPA Media

Removes 99.97% of microscopic pollutants at 0.3 microns or larger, including:

• Pollen, dust mites, and mold spores
• Pet dander and fine particulate matter (PM2.5)
• Bacteria, viruses, and smoke particles

Ideal for allergy sufferers, asthma patients, and urban households.

🔹 Integrated Activated Carbon Layer

Built into the pre-filter section to adsorb:

• Cooking odors and kitchen fumes
• Pet smells and litter box odors
• Tobacco and wildfire smoke
• VOCs from cleaning supplies, paints, and new furniture

This dual-layer design extends filter life and enhances overall air quality.

🔧 Easy, Tool-Free Installation

Replacing your FLT4825 filter takes seconds:

1. Turn off and unplug your Philips air purifier
2. Open the front or side filter compartment
3. Remove the old Filter B
4. Insert the new FLT4825 replacement until it clicks into place

🔁 Recommended Replacement: Every 12 months, or sooner if you notice reduced airflow, lingering odors, or increased allergy symptoms.

💡 Remember: Continue rinsing your washable Filter A (pre-filter) every 2–4 weeks to maximize Filter B’s lifespan.

💰 Why Choose Our FLT4825 Replacement?

• ✅ Exact fit for Philips AC4825/AC4300/AC4800/AC4900/AC4850
• ✅ True HEPA efficiency (99.97% @ 0.3µm)
• ✅ Activated carbon pre-filter built in for odor control
• ✅ Cost-effective alternative to OEM Philips filters
• ✅ Helps maintain auto mode, air quality sensor accuracy, and fan performance

❓ Frequently Asked Questions (FAQ)

Q: Is this an official Philips filter?
A: This is a third-party compatible replacement designed to match OEM FLT4825 specifications in fit, filtration, and performance. It is not manufactured by Philips but is fully functional in listed models.

Q: Do I need to buy Filter A as well?
A: No—Filter A is washable and reusable. You only need to replace Filter B (FLT4825) annually. Just rinse Filter A under cold water monthly and let it air dry.

Q: Will this trigger a “replace filter” error if not OEM?
A: No. Philips purifiers detect filter presence via physical alignment—not chips. As long as the filter fits correctly, your unit will operate normally.

Final Thoughts

Your Philips air purifier deserves a filter that delivers real protection without real markup. The FLT4825 HEPA Filter B replacement gives you medical-grade particle removal, effective odor control, and reliable compatibility—all at a smarter price.

🛒 Stock up today and keep your home’s air fresh, clean, and healthy year-round.