PuroAir 400 Smart HEPA Air Purifier for Large Rooms, Allergen Control, Ultra-Quiet Filtration System

Turn your home into a sanctuary of fresh air and allergy relief with the PuroAir 400 Air Purifier. Designed for powerful, whole-room purification, it delivers cleaner, healthier air across large spaces up to 2,000 sq ft in an hour. Its advanced 3-layer filtration system begins with a pre-screen filter to capture larger particles like dust and pet hair, followed by a HEPA filter that removes particulate matter down to 0.1 microns, and finishes with an activated carbon filter to reduce odors, smoke, and VOCs. With automatic air quality detection and real-time adjustments, it continuously works to maintain a fresh, balanced indoor environment. Built with an energy-efficient 80W system and whisper-quiet operation as low as 31 dBs, it fits seamlessly into daily life. The unit measures 14.4” L x 8.1” W x 21.5” H, weighs 14.7 lbs, operates on 120V, and includes a 2-year warranty with an option for lifetime coverage through a filter subscription. Free shipping is included for added convenience.

Features

• 3-layer filtration system: pre-screen filter, HEPA filter, activated carbon filter
• Air quality indicator light for real-time monitoring
• Filter replacement notification light
• Automatic adjustment based on air quality
• Energy-efficient 80W design
• Whisper-quiet operation
• Lowest noise level: 31 dBs

Who It’s For

• Allergy sufferers needing cleaner indoor air
• Pet owners dealing with dander and odors
• Families wanting healthier air for children and daily living
• Large room or open-space homeowners
• Anyone sensitive to dust, smoke, or airborne particles

Why It’s Special
The PuroAir 400 stands out for its ability to combine powerful large-room coverage with intelligent automation and ultra-quiet performance. Its multi-stage filtration targets both visible particles and microscopic pollutants, while the smart sensor system ensures optimal air quality without constant manual adjustment. This balance of performance, convenience, and efficiency makes it a dependable everyday solution for maintaining a consistently fresh indoor environment.

Gift Ideas

• Housewarming gift for new homeowners
• Wellness gift for family members
• Practical gift for pet owners
• Thoughtful option for allergy-prone friends
• Upgrade gift for improving home comfort

Specifications

• Product Type:
  • Air Purifier
• Room Coverage: 
  • Up to 2,000 sq ft in an hour¹
• Filters: 
  • Particulate matter (PM1, PM2.5, PM10) down to 0.1 µm, VOCs⁵
• Reduces:
  • Pet dander⁴, smoke⁴, pollen⁴, allergens⁴, dust³
• Dimensions: 
  • 14.4” L x 8.1” W x 21.5” H
• Weight: 
  • 14.7 lbs
• Warranty: 
  • 2-Year Warranty Included
  • Lifetime Warranty with Filter Subscription
• Shipping:
  • Free Shipping
• Air Filter Type: 
  • HEPA Filter
  • Activated Carbon Filter
• Wattage:
  • 80W
• Voltage:
  • 120V

Experience cleaner air with PuroAir's commitment to customer satisfaction. Enjoy benefits such as free same-day shipping*, a 100-day cleaner air guarantee, and a lifetime warranty on your purifier with an active filter subscription. 

¹Based on independent testing in an ISO 17025-certified lab and typical residential ventilation rates. Results may vary. [See full disclaimer here.]

⁴Tested to remove Fel d 1 and pollen in an ISO 17025 certified lab.