Appliance - Air Purifier

Air Purifier Parts - Replace Your Filter and Restore the Air Quality Your Purifier Was Built to Deliver

When your air purifier is running constantly but the air still smells stale, allergy symptoms aren't improving despite the unit being on, or the filter indicator light has been on for weeks, the machine isn't failing - the filter is. A saturated HEPA or activated carbon filter stops capturing particles and odors and starts recirculating them instead, which defeats the purpose of running the unit at all. At BlueStars Parts, we carry replacement air purifier parts for Levoit and other leading purifier brands, so you can swap in a fresh filter and get back to genuinely clean air without buying a whole new unit.

Common Signs You Need These Parts

If your air purifier isn't doing what it should, your filter is almost always the first thing to check:

• The filter replacement indicator light has turned on or been ignored for a while
• The air still smells musty, stale, or like pets even with the purifier running continuously
• Allergy or asthma symptoms haven't improved despite consistent purifier use
• You notice more dust settling on surfaces than usual around the purifier
• Airflow from the unit feels weaker than it did when the filter was new
• A dusty or burnt smell comes from the purifier during operation
• Your pet dander or odor problem has gotten worse over time despite the unit running
• It's been six to twelve months since the last filter replacement

Popular Products in This Collection

These are the filters our customers replace most often to restore full purifier performance:

• Core 400S Filter for LEVOIT Smart WiFi Air Purifiers — 5-in-1 H13 HEPA with Activated Carbon, For Core 400S-RF LRF-C401S-WUS
  When your Levoit Core 400S is running but no longer capturing dust, smoke, or odors effectively, this 5-in-1 H13 HEPA replacement filter restores full multi-layer filtration — covering fine particles, allergens, and VOCs in a single direct-fit swap.
• LEVOIT Core 400S-P Air Purifier Pet Allergy 3-in-1 Filter
  If pet dander, hair, and odors are getting through your current filter or allergy symptoms have returned despite consistent purifier use, this pet-specific 3-in-1 replacement is built to handle higher concentrations of pet allergens and trap odors more effectively than the standard filter.

Shop by Part Type / Use Case

Not sure which filter fits your situation? Here's how our air purifier parts break down by type:

• H13 HEPA Replacement Filters: Multi-layer HEPA filters for Levoit Core 400S and compatible smart WiFi purifier models
• Pet Allergy Filters: Specialized 3-in-1 filters designed for homes with pets — higher dander and odor capture capacity
• Activated Carbon Filters: Carbon-layer filters for VOC, smoke, and odor removal in kitchen and living space purifiers
• Multi-Purpose Filter Kits: Combination filters that handle fine particles, allergens, and odors in a single replacement unit

Why Buy From BlueStars Parts

Here's what you get when you shop air purifier parts at BlueStars Parts:

• OEM-compatible filters built to match your purifier's original filtration specs — not generic replacements that underperform on particle capture
• Specialty options for pet households so you're not using a general-purpose filter where a higher-capacity one is clearly the better fit
• Clear model compatibility on every listing — purifier series and part numbers listed up front so you order with confidence
• Fast US shipping so a spent filter doesn't leave your home running on degraded air quality longer than it needs to
• Honest pricing that makes a routine filter replacement easy to stay on top of without it feeling like an expensive maintenance task
• Real customer support to help you confirm the right filter for your exact purifier model before you check out