Overview

The Winix 5500-2 and Levoit Core 400S sit in the same $150-$190 price range, target mid-to-large rooms, and use True HEPA filtration. Both are popular Amazon choices with thousands of positive reviews. But they serve different priorities.

The Winix 5500-2 delivers higher CADR for smoke and pollen, uses a washable carbon filter to lower long-term costs, and includes PlasmaWave ionizer technology. It has no smart features. The Levoit Core 400S runs quieter, offers full app control with Alexa and Google Assistant integration, and covers larger rooms. Its filters are more expensive.

This comparison breaks down real-world performance, noise levels, coverage area, filter costs, and smart features to help you decide which fits your room and budget.

Price and Value

Both air purifiers cost approximately $170-$190 as of May 2026, though the Winix 5500-2 has been discontinued in some markets and replaced by the Winix 5510 (a nearly identical successor with added Wi-Fi support). You can still find the 5500-2 on Amazon from third-party sellers.

The Levoit Core 400S is widely available on Amazon at $152-$190 with Prime shipping. Price fluctuates; recent lows hit $151.94. It includes smart features at no premium compared to non-smart competitors.

The Winix 5500-2 typically sold for $160-$180 when in stock. Since the 5510 replaced it, inventory is limited. If you find a new 5500-2 under $170, it is a strong value for the CADR and washable carbon filter. If not, consider the Winix 5510 at a similar price with app control added.

Upfront cost is nearly identical. The real value difference emerges in filter replacement costs over 3-5 years.

Coverage Area and Efficiency

The Levoit Core 400S covers up to 403 sq ft at 5 air changes per hour (ACH) or 1,733 sq ft at 1 ACH. Its 260 CFM CADR rating is optimized for balanced allergen capture across dust, smoke, and pollen.

The Winix 5500-2 covers 360 sq ft at 5 ACH. Its CADR breaks down by particle type: 243 CFM for dust, 232 CFM for smoke, and 246 CFM for pollen. The higher pollen and smoke CADR means faster clearing for those specific particles, but its overall coverage area is smaller.

For rooms over 400 sq ft, choose the Levoit. For rooms 300-360 sq ft, the Winix offers stronger particle removal per square foot. For rooms under 300 sq ft, both are oversized and will run efficiently on low speeds most of the time.

Noise Levels

Noise is the Levoit Core 400S's biggest advantage. It runs at 24 dB on sleep mode, which is effectively silent in a bedroom. The Winix 5500-2 runs at 27.8 dB on low speed - still quiet, but audible as a faint hum.

On maximum speed, the Levoit measures 59.9 dB compared to the Winix at 66.4 dB. The 6.5 dB difference is significant. Decibel scales are logarithmic; 66 dB is roughly twice as loud as 60 dB to the human ear. If you run your air purifier on high during cooking or cleaning, the Levoit is noticeably quieter.

For bedroom use, both work. The Levoit is better for light sleepers or open-floor plans where the purifier is closer to the sleeping area. The Winix is fine if placed in a corner or used primarily in living spaces.

Filter Types and Filtration Performance

Both use 3-stage True HEPA filtration. The Winix 5500-2 starts with a washable pre-filter, followed by a True HEPA filter that captures 99.97% of particles down to 0.3 microns, and finishes with an activated carbon filter (also washable). It adds PlasmaWave technology, which uses ionization to neutralize airborne particles without producing ozone above EPA safety limits.

The Levoit Core 400S uses a combined pre-filter, True HEPA, and activated carbon layer in a single cartridge. It captures the same 99.97% of particles at 0.3 microns. The carbon layer handles odors, VOCs, and smoke. It does not include ionization.

Real-world performance is nearly identical for allergens, dust, and pet dander. HouseFresh testing showed the Winix clearing a test room in 23-24 minutes with or without PlasmaWave enabled. The Levoit cleared similar test rooms in 22-25 minutes. Both meet their rated CADR.

The Winix has an edge for smoke and cooking odors due to the washable carbon filter and PlasmaWave. The Levoit is simpler to maintain (one cartridge, no ionizer to clean) but requires full filter replacement every 6-12 months.

Smart Features

The Levoit Core 400S connects to the VeSync app via Wi-Fi. You can control fan speed, set schedules, monitor real-time air quality (PM2.5 sensor), and check filter life remotely. It integrates with Amazon Alexa and Google Assistant for voice control.

The Winix 5500-2 has no smart features. It uses manual controls with an LED indicator for filter replacement and an air quality sensor that adjusts fan speed automatically in auto mode. No app, no Wi-Fi, no voice assistant support.

If you want smart home integration, the Levoit is the only choice in this comparison. If you prefer a set-and-forget purifier with auto mode and no app dependency, the Winix works fine.

Maintenance Costs

This is where the Winix 5500-2 pulls ahead. Its True HEPA filter costs $50-$60 and lasts 12 months. The pre-filter and activated carbon filter are both washable, adding zero annual cost. Total annual filter cost: $50-$60.

The Levoit Core 400S uses a combined filter cartridge that costs $50-$70 and lasts 6-12 months depending on usage. At 12 months per filter, annual cost is $50-$70. At 6 months per filter in heavy-use homes (pets, smoking, high pollen areas), annual cost doubles to $100-$140.

Over 5 years, the Winix costs $250-$300 in filters. The Levoit costs $250-$700 depending on replacement frequency. If you run your purifier 24/7 or have multiple pets, the Winix saves $200-$400 over the life of the unit.

Replacement filters for both are available on Amazon with Prime shipping. Genuine Levoit filters are here, and genuine Winix filters are here (also compatible with the 5510 successor model).

Filter Component	Winix 5500-2	Levoit Core 400S
HEPA filter cost	$50-$60 / 12 months	$50-$70 / 6-12 months
Carbon filter cost	$0 (washable)	Included in HEPA cartridge
Pre-filter cost	$0 (washable)	Included in HEPA cartridge
Annual cost (light use)	$50-$60	$50-$70
Annual cost (heavy use)	$50-$60	$100-$140

Performance Metrics

CADR is the standardized measure of how much filtered air an air purifier delivers per minute. Higher CADR means faster room clearing.

The Winix 5500-2 delivers 243 CFM for dust, 232 CFM for smoke, and 246 CFM for pollen. The Levoit Core 400S delivers a combined 260 CFM CADR. In practice, the Winix clears smoke and pollen slightly faster due to its higher particle-specific CADR, while the Levoit is more balanced across all three particle types.

Both purifiers meet AHAM certification standards and deliver their rated CADR in independent testing. Real-world performance is nearly identical for most home use cases. The Winix has a slight edge for cooking smoke or seasonal pollen spikes. The Levoit has a slight edge for general dust and allergen maintenance.

Customer Ratings

The Levoit Core 400S holds 4.6 out of 5 stars on Amazon from over 8,000 reviews as of May 2026. Common praise: quiet operation, effective allergen removal, easy app setup, good build quality. Common complaints: filter replacement costs add up, app can be glitchy, unit is bulky for smaller rooms.

The Winix 5500-2 averaged 4.7 out of 5 stars from over 20,000 reviews before being discontinued. The Winix 5510 successor model holds 4.6 out of 5 stars from over 31,000 reviews. Common praise: strong CADR for the price, washable carbon filter saves money, reliable auto mode, PlasmaWave reduces odors. Common complaints: no app control, ionizer has a faint smell some users dislike, LED lights are bright at night (not dimmable).

Both have strong real-world customer satisfaction. Negative reviews for both center on filter costs and unit size, not filtration performance.

Winner by Category

• Best for large rooms: Levoit Core 400S (403 sq ft vs 360 sq ft coverage at 5 ACH)
• Best for quiet operation: Levoit Core 400S (24 dB sleep mode vs 27.8 dB)
• Best for smart home integration: Levoit Core 400S (app + Alexa + Google Assistant)
• Best for low long-term cost: Winix 5500-2 (washable carbon filter saves $50-$80/year)
• Best for smoke and pollen: Winix 5500-2 (higher particle-specific CADR)
• Best for set-and-forget use: Winix 5500-2 (auto mode, no app dependency)

Final Recommendation

Choose the Levoit Core 400S if:

• Your room is over 400 sq ft
• You want app control, scheduling, and voice assistant integration
• Quiet operation is a priority (bedroom, nursery, open-floor plan)
• You prefer a single-cartridge filter system

Choose the Winix 5510 (or 5500-2 if still in stock) if:

• Your room is under 360 sq ft
• You want the lowest annual filter costs
• You prioritize smoke and pollen removal over balanced filtration
• You prefer manual controls and auto mode without app dependency

Both are strong mid-range air purifiers. The Levoit is better for tech-forward users with larger rooms. The Winix is better for budget-conscious users who want low maintenance costs and strong particle removal without smart features.

If you are deciding between the two and want smart features but also low filter costs, consider the Winix 5510 - it adds app control to the 5500-2 platform while keeping the washable carbon filter. It costs $10-$20 more than the Levoit but saves $50-$80 per year in filter replacements.

For more air purifier comparisons and reviews, see our guide on best air purifiers under $200.