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🌬️ Product Highlights
- ✔ POWERFUL LARGE ROOM COVERAGE – Cleans up to 2,000 square feet in one hour. Ideal for large living rooms, basements, and open floor plans
- ✔ 3-LAYER HEPA + CARBONTECH FILTRATION – Pre-filter captures large particles, True HEPA traps 99.9% of pollutants down to 0.1 microns, and activated carbon absorbs odors and VOCs
- ✔ SMART AIR QUALITY SENSOR – Built-in particle sensor continuously monitors air quality and automatically adjusts fan speed – set it and forget it
- ✔ UP TO 500X STRONGER THAN COMPETITORS – Independent lab testing (ISO 17025 certified) proves superior filtration performance
- ✔ WHISPER QUIET SLEEP MODE – Ultra-quiet operation at just 31-35 dB – won\'t disturb your sleep or work
- ✔ FILTERS WILDFIRE SMOKE, DUST, POLLEN, PET DANDER & ODORS – Removes smoke particles, pet dander, pollen, dust mites, mold spores, and VOCs
- ✔ ENERGY STAR CERTIFIED & CARB COMPLIANT – Energy efficient (80W) and certified safe – eligible for sale in all 50 states
- ✔ 2-YEAR MANUFACTURER WARRANTY – Backed by PuroAir\'s quality and customer support
🏠 Perfect For
- Large living rooms and open floor plans – up to 2,000 sq ft
- Homes with pets – removes pet dander and odors
- Allergy and asthma sufferers – captures 99.9% of pollen, dust, and mold
- Households with smokers – removes smoke particles and odors
- Wildfire-prone areas – filters smoke particles effectively
- Basements and finished attics
- Home offices and large master bedrooms
⚠️ Important Usage Notes
• Filter replacement: Replace filter every 3-4 months for optimal performance. Genuine PuroAir 400 replacement filters available (sold separately).
• Coverage estimate: 2,000 sq ft is based on one hour of operation. Clean Air Delivery Rate (CADR) may vary based on room layout.
• Auto mode: The air quality sensor continuously monitors PM2.5 levels and adjusts fan speed automatically.
• No WiFi: This model features manual touch controls – no app or WiFi connectivity.
• Placement: For best results, place with at least 12 inches of clearance on all sides. 📏 Specifications Brand
PuroAir
Model
PuroAir 400
Type
HEPA Air Purifier / Air Cleaner
Color
Black / White (model dependent)
Coverage Area
Up to 2,000 sq ft (one hour)
Filter Type
Pre-filter + True HEPA + CarbonTech Activated Carbon
Filtration Efficiency
99.9% of particles down to 0.1 microns
Noise Level
31-35 dB (sleep mode)
Wattage
80 Watts
Voltage
120 Volts (standard US outlet)
Control Method
Touch Panel
Special Features
Auto Mode, Sleep Mode, Air Quality Sensor, Filter Replacement Indicator, Timer (2/4/8h), Child Lock
Contaminants Removed
Dust, Pollen, Pet Dander, Smoke, Odors, VOCs, Mold Spores, Wildfire Smoke
Filter Replacement Cycle
Every 3-4 months (indicator light alerts)
Dimensions (W x D x H)
14.4\" x 8.1\" x 21.5\"
Item Weight
14.73 lbs
Certifications
Energy Star, CARB, ETL, UL, ISO 17025
Warranty
2-Year Manufacturer Warranty
UPC
860009797505
MPN
PA400
🌬️ Product Description
The PuroAir 400 HEPA Air Purifier is designed for large spaces up to 2,000 square feet. Whether you\'re dealing with seasonal allergies, pet dander, wildfire smoke, or everyday dust and odors, this air purifier delivers cleaner, fresher air throughout your largest rooms.
Why PuroAir 400 outperforms the competition: Independent testing in an ISO 17025 certified lab shows the PuroAir 400 is up to 500X stronger than competing air purifiers. The 3-layer filtration system captures 99.9% of airborne particles down to 0.1 microns – including dust, pollen, pet dander, smoke, VOCs, and mold spores.
The smart air quality sensor monitors PM2.5 particle levels in real time. In Auto Mode, the purifier automatically adjusts fan speed based on current air quality – when pollution rises, it works harder; when air is clean, it runs quietly to save energy. A color-coded ring (green/yellow/orange/red) gives you instant visual response on your room\'s air quality.
At 31-35 dB in Sleep Mode, the PuroAir 400 is whisper quiet – perfect for bedrooms and nurseries. The touch panel provides intuitive control over Auto Mode, Sleep Mode, Timer (2/4/8 hours), Child Lock, and Fan Speed (1-4). A filter replacement indicator alerts you when it\'s time to change the filter (every 3-4 months).
Energy Star certified and CARB compliant, the PuroAir 400 is energy efficient at only 80W. Backed by a 2-year manufacturer warranty and trusted by over 900,000 families, it\'s a reliable investment in your home\'s air quality.
✅ Why Choose PuroAir 400
→ Cleans up to 2,000 sq ft – ideal for large rooms
→ 99.9% filtration of particles down to 0.1 microns
→ Up to 500X stronger than competitors (ISO 17025 tested)
→ Smart air quality sensor with Auto Mode
→ Whisper quiet – 31-35 dB in Sleep Mode
→ Filters dust, pollen, pet dander, smoke, VOCs, and more
→ Energy Star & CARB certified – energy efficient (80W)
→ 2-year warranty – backed by PuroAir
→ Touch panel with Auto, Sleep, Timer, Child Lock
→ Trusted by 900,000+ families 📦 What\'s Included
- ✔ PuroAir 400 HEPA Air Purifier
- ✔ Pre-installed 3-Layer Filter (HEPA + CarbonTech)
- ✔ User Manual
❌ NOT Included
• Replacement filter – pre-installed filter included; replacement filters sold separately (search \"PuroAir 400 replacement filter\")
• Remote control – touch panel control only
• WiFi router – this model does not have WiFi or app connectivity 🔧 Setup & Usage Tips
- Setup: Remove from box, remove plastic wrap from filter, place on flat surface with 12\" clearance on all sides. Plug in and power on.
- Auto Mode: Press the Auto button to let the sensor monitor air quality and adjust fan speed automatically.
- Sleep Mode: Press the Sleep button for whisper-quiet operation – ideal for bedrooms and nurseries.
- Timer: Set 2, 4, or 8 hour run time – perfect for scheduling overnight or during work hours.
- Filter replacement: When the filter indicator light turns on (every 3-4 months), replace with a genuine PuroAir 400 filter.
💡 Pro Tips
• Run the purifier 24/7 for best air quality – Auto Mode optimizes energy use
• Keep doors and windows closed while running for maximum effectiveness
• For large open floor plans, position the purifier centrally for even air distribution
• The color-coded air quality ring gives you real-time response – green = good, yellow = moderate, orange = poor, red = very poor
• Vacuum the pre-filter surface every 2-3 weeks to extend filter life between replacements
• Register your product online for warranty coverage and replacement filter reminders 📞 After-Sales Service
- ✅ Fast Shipping – Dispatched within 3 business days from US warehouse
- ✅ 30-Day Returns – Free & easy returns via Money Back Guarantee
- ✅ Genuine Product – 100% authentic PuroAir with original packaging
- ✅ Customer First – Any product or operational issues? Contact us FIRST, we will do our best to resolve
- ✅ 2-Year Manufacturer Warranty – Covered by PuroAir – contact us for claim assistance
Disclaimer: PuroAir® is a registered trademark. This listing is for the PuroAir 400 HEPA Air Purifier. 2,000 sq ft coverage is based on one hour of operation. Filter replacement every 3-4 months recommended. CADR may vary. No WiFi connectivity or smart home integration. California Prop 65 warning: This product may contain chemicals known to the State of California to cause cancer or reproductive harm.