The Essential Guide to Filters for Air Purifiers: Types, Benefits & Selection Tips

For over two decades, WuJiang DeshengXin Purification Equipment Co., LTD has engineered high-performance filters for air purifiers that combat pollutants efficiently. This guide explains everything you need to know to make informed decisions.

Why Air Purifier Filters Matter

Indoor air can be 2–5x more polluted than outdoor air (EPA). Quality filters for air purifiers remove:

• Allergens (pollen, dust mites)

• Microorganisms (bacteria, viruses)

• VOCs and odors

• PM2.5 particles

Proper filter selection directly impacts respiratory health and equipment longevity.

4 Key Types of Filters for Air Purifiers

1. HEPA Filters: The Gold Standard

High-Efficiency Particulate Air (HEPA) filters for air purifiers capture 99.97% of particles ≥0.3 microns. Ideal for:

• Allergy sufferers

• Hospitals & labs

• Smoke removal

Pro Tip: Look for H13/H14-grade filters for optimal performance.

Explore our HEPA filter solutions →

2. Activated Carbon Filters

Specialized in neutralizing:

• Chemical fumes

• Cooking odors

• Formaldehyde

Works best when combined with HEPA in hybrid systems.

3. UV-C Light Filters

Ultraviolet filters destroy:

• Airborne pathogens (99.9% efficiency)

• Mold spores

• Viruses

Requires periodic bulb replacement for sustained efficacy.

4. Pre-Filters & Washable Filters

• Extend primary filter lifespan

• Capture large particles (hair, lint)

• Cost-effective for routine maintenance

How to Choose Filters for Air Purifiers: 5 Expert Criteria

1. Particle Size Requirements
   Match filter grade to your needs:

• PM2.5: HEPA H13+

• Odors: Carbon layer ≥1" thick

2. CADR Rating
   Choose Clean Air Delivery Rate (CADR) matching room size:

   Room Size

   Minimum CADR

   200 sq.ft	130+
   400 sq.ft	260+

3. Energy Efficiency
   Low-pressure drop filters reduce energy consumption by 15–30%.

4. Certifications
   Verify ECARF (allergy) or ISO 16890 (particulate) certifications.

5. Replacement Costs
   Premium filters for air purifiers last 6–12 months vs. 3–6 months for budget options.

Maintenance Tips to Maximize Filter Life

• Replace HEPA filters every 12 months

• Vacuum pre-filters monthly

• Monitor air quality sensors

• Buy OEM-compatible replacements

Why Choose Professional-Grade Filters?

Our 20+ years of R&D ensures:
✅ 99.99% filtration efficiency (third-party tested)
✅ 30% longer lifespan than industry average
✅ Custom sizes for commercial applications

Request Custom Filter Solutions →