Purifier or Monitor First
Should you buy an air purifier or air quality monitor first? This guide compares immediate relief against diagnostic insight to help you decide.
SIESEAN Variant #218537 Air Purifier for Home Large Rooms up to 3500 sq ft
Features
- H13 True HEPA filter captures 99.97% of 0.1 micron particles
- 235 CFM CADR for fast purification
- Dual-sided airflow covers up to 3500 sq ft
- Quiet 30dB sleep mode for bedrooms
- Smart PM2.5 display and auto mode
- Child lock, timer, and dimmer for safety
- Carbon filter removes odors and VOCs
General specs
- Brand: SIESEAN
- Seller: Retailer
- ID: B0FN2TGQR5
- Modes: Sleep Mode, Auto Mode
- Timer: Yes
- Dimmer: Yes
- Airflow: Dual-sided, 2× faster circulation
- CADR (CFM): 235
- Child Lock: Yes
- Filter Type: H13 True HEPA, Activated Carbon
- Certifications: CARB, DOE, EPA, UL
- Air Quality Display: PM2.5 digital display
- Coverage Area (Max): 3500 ft²
- Filtration Efficiency: 99.97% at 0.1 micron
- Room Size (Quick Clean): 500 ft² in 15 minutes
- Noise Level (Sleep Mode): 30 dB
- Filter Replacement Interval: 3-4 months
- Compatible Replacement Filter: SIESEAN (ASIN: B0FVFQQXDR)
- First listed by seller: May 28, 2026
If you are interested in more details, you can find full information on the seller's page.
Partner offer temporarily unavailable
Shipping options
Delivery to 
United States
United States
Available
If you live in a home with pets or smokers, you know odors linger long after the source is gone. This air purifier uses an H13 True HEPA filter that traps 99.97% of particles as small as 0.1 microns, including pet dander, smoke, and dust. The activated carbon layer grabs VOCs and cooking smells, so your living room smells fresh even after a big meal.
With a 235 CFM CADR and dual-sided intake, it cleans a 500 sq. ft. room in 15 minutes. Place it in your open-concept basement or main floor, and the quiet 30dB sleep mode won't disturb light sleepers. The PM2.5 display shows real-time air quality, and auto mode adjusts fan speed automatically. A child lock keeps curious kids safe, and the timer lets you set it to run during the night. It’s CARB, DOE, EPA, and UL certified, so you know it meets strict safety and efficiency standards.
Similar products comparison
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
|
Air Purifier for Home Large Rooms up to 3500 sq ft
|
Air Purifier - 3-In-1 Filtration for Dust, Smoke, & More True HEPA filter captures 99.97% of particles
|
Windmill Max 3-in-1 HEPA filtration
|
KNKA APH4000 Black AHAM Verified High CADR
|
Air Purifier for Home Large Room Up to 3400 ft² Covers up to 3400 ft² in Pet Mode
|
Air Purifier for Home Large Room 2600ft² White Multi U-Shape Air Inlets
|
|
| Brand | SIESEAN | Windmill | Windmill | KNKA | DAYETTE | Meowant |
| Rating |
|
|
|
|
|
|
| Price | €205.27 | €177.61 | €445.36 | €107.08 | €107.09 | €67.82 |
| Seller | Retailer | Retailer | Retailer | Retailer | Retailer | Retailer |
| Update | May 29, 2026 | Jun 19, 2026 | May 20, 2026 | May 28, 2026 | Jun 24, 2026 | May 24, 2026 |
| Modes | Sleep Mode, Auto Mode | Auto Mode, Sleep Mode, ECO Mode, PET Mode | Pet Mode, Auto Mode, Sleep Mode | |||
| Timer | Yes | Yes | Yes | |||
| Child Lock | Yes | Yes | Yes | |||
| Filter Type | H13 True HEPA, Activated Carbon | Washable Pre-Filter, True HEPA, Activated Carbon | Dual H14 HEPA Filters, Washable Nylon Pre-filters, Activated Carbon Pellets | |||
| Noise Level (Sleep Mode) | 30 dB | 22-24 dB | 22 dB | |||
| Air Quality Sensor | Laser-based PM2.5 | Laser-based PM2.5 sensor | Yes | |||
When this device makes sense
Product confidence
Reviews
There are no text reviews yet. If you have experience using this product, please leave a review. It will help other people decide whether this product is right for them.