400 HEPA Air Purifier
#16
PuroAir

PuroAir 400 HEPA Air Purifier

Rating

Model: PuroAir 400
$249(incl. tax)Amazon price as of 2025-09-02
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Product Overview

The PuroAir 400 HEPA Air Purifier is designed for large rooms, covering up to 2,000 sq ft. It features a 3-layer filtration system, including a pre-filter, HEPA filter, and activated carbon filter, capturing up to 99.9% of pollutants like dust, pollen, smoke, pet dander, and VOCs. It has a smart particle sensor that monitors air quality and adjusts power automatically. The unit also includes a sleep mode for quiet operation and is certified by CARB, ETL, ISO, and UL.

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Product Specifications

Applicable Area
2000sq ft
CADR (Smoke)
CFM
CADR (Dust)
CFM
CADR (Pollen)
CFM
Filter Type
HEPA, Activated Carbon
Number of Fan Speeds
Noise Level (Min)
dB
Noise Level (Max)
dB
Power Consumption
W
Smart Features
No

Size & Weight

Weight
14.7 Pounds
Hight
21.5 inches
Width
14.4 inches
Depth
8.1 inches

Features

Odor Sensor Function

The odor sensor detects odors and automatically adjusts the air purification level, ensuring the air remains fresh. This is particularly useful for quickly responding to cooking or pet odors, maintaining a pleasant indoor environment.

Dust Sensor Function

The dust sensor automatically adjusts the air purification level, increasing fan speed when high concentrations of dust are detected. This ensures efficient particle removal, especially during cleaning or when opening windows, improving air quality.

PM2.5 Display Function

This air purifier does not have a PM2.5 display function. Therefore, you cannot visually monitor the air quality in your room in real-time. Consider models with this feature for better insight into air quality.

Filter Replacement Indicator Function

This air purifier does not have a filter replacement indicator function. Therefore, you need to manually keep track of filter replacement schedule to ensure optimal performance. Regular checks are essential.

Child Lock Function

The child lock function disables the control panel, preventing unintended changes to the settings. This provides peace of mind when the air purifier is placed in areas accessible to children, ensuring consistent operation.

Sleep Mode Function

The sleep mode reduces operating noise and dims the display lights for quiet operation during sleep. This allows for comfortable use in the bedroom without disturbing sleep, making it ideal for those sensitive to noise or light.

SHOPSTAFF Rating Score

#16
Ranked #16 out of 100 products in Category
4.2
Overall Rating

The PuroAir 400 is a decent air purifier for large rooms, featuring a 3-layer filtration system and smart sensor. It lacks smart features and brand reliability is moderate. It is positioned as a mid-range option.

Coverage Area (CADR)
4.3
The PuroAir 400 covers up to 2,000 sq ft, making it suitable for large rooms. Ensure this coverage meets your needs, as smaller spaces may not require such a powerful unit. Consider the room's dimensions before purchasing.
HEPA Filter Quality and Type
4.5
Equipped with a HEPA filter, the PuroAir 400 captures 99.9% of pollutants, including dust, pollen, and pet dander. This ensures high-quality air purification, making it ideal for allergy sufferers and pet owners.
Pre-filter and Filter Replacement
4.3
The PuroAir 400 includes a pre-filter to capture larger particles, extending the life of the HEPA filter. Regular replacement is needed, every 3-6 months, to maintain optimal performance. Check filter costs before purchasing.
Activated Carbon Filter (Odor Removal)
4.2
The activated carbon filter effectively removes odors, gases, and VOCs, making it suitable for households with pets or sensitivities to smells. Ensure the carbon filter is replaceable for continued odor removal effectiveness.
Noise Level
4.6
The PuroAir 400 operates quietly, especially in sleep mode, making it suitable for bedrooms and other quiet environments. This ensures undisturbed rest and relaxation, even during continuous operation.
Air Quality Sensor and Auto Mode
4.7
The smart particle sensor monitors air quality and automatically adjusts the fan speed, optimizing performance and energy consumption. This feature ensures efficient air purification without constant manual adjustments.
Manufacturer Reliability and Warranty
3.0
PuroAir offers a 2-year warranty, indicating some confidence in their product. However, research the manufacturer's reputation and customer support to ensure reliability before purchasing.
Cost Performance
4.0
The PuroAir 400 offers a good balance of features and price, making it a worthwhile investment for those seeking cleaner air. Consider long-term costs, such as filter replacements, when evaluating overall value.

Brand & Manufacturer Details

PuroAir
PuroAir provides air purifiers with multi-layer filtration systems to remove pollutants, dust, pollen, smoke, pet dander, and VOCs for cleaner air.

Key Highlights

  • Large coverage area
  • 3-layer filtration system
  • Quiet sleep mode

Considerations

  • Replace filter every 3-6 months
  • Ensure proper filter installation
  • Keep away from walls for optimal airflow

Recommended For

  • Homeowners with large living spaces
  • Pet owners
  • Individuals sensitive to air pollutants

Not Recommended For

  • Those requiring smart features
  • Those with limited space
  • None in particular

Suitable For

  • Large living rooms
  • Bedrooms
  • Offices

Not Suitable For

  • Small apartments
  • Cars
  • Outdoor use

Frequently Asked Questions (FAQ)

Q.How effective is this air purifier at removing odors, especially from pets?
A.According to staff confirmation, the PuroAir 400 significantly reduces pet odors. One staff member with multiple pets noted that the pet smell was eliminated on the main floor of their home after using the purifier.
Q.Is the noise level of this air purifier disruptive, especially during sleep?
A.No, the PuroAir 400 is designed to operate quietly. Staff confirmation indicates that the noise level is less than a box fan on the first and second fan settings. It also has a sleep mode for even quieter operation, making it suitable for bedrooms.
Q.How often do I need to replace the filter, and what is the cost?
A.The manufacturer recommends replacing the air filter every 3 months or 90 days for optimal performance. Staff confirmation mentions that the cost of replacement filters is approximately $50 annually.
Q.Does this air purifier have smart features like WiFi connectivity?
A.No, the PuroAir 400 focuses on simplicity and does not include WiFi or smart features. It is designed for straightforward operation with a focus on air purification.
Q.How does the automatic mode work, and is it reliable?
A.The PuroAir 400 has a smart particle sensor that monitors air quality and automatically adjusts the fan speed. Staff confirmation indicates that the sensor accurately detects changes in air quality, providing reassurance of its reliability.
Q.Is this air purifier suitable for people with allergies?
A.Yes, the PuroAir 400 is designed to filter common household pollutants, including dust, pollen, and pet dander, which can help improve allergy symptoms. One staff member noted that their allergies felt better after using the purifier.
Q.How large of a room can this air purifier effectively clean?
A.The PuroAir 400 is designed to clean large rooms up to 2,000 sq ft in one hour. Staff confirmation from someone using it in their home stated that their daughter noticed the air smelled cleaner and fresher within one hour of use.
Q.Where is the air intake located on this model, and does it affect placement?
A.The air intake is located on the back of the unit. One staff member noted that this requires the unit to be placed away from walls/items to ensure proper airflow. They turned it backwards to allow for better air intake.

SHOPSTAFF Rating Ranking

#1

BLUEAIR

Blue Signature 112929

$359(incl. tax)Amazon price as of 2025-09-02

Large room air purifier with 7-stage filtration, smart features, and doubles as a table with Swedish-inspired design.

Applicable Area3385 sq ftCADR (Smoke)- CFM
CADR (Dust)- CFMCADR (Pollen)- CFM
Filter TypeActivated CarbonNumber of Fan Speeds-
Noise Level (Min)- dBNoise Level (Max)35 dB
Power Consumption4 WSmart FeaturesYes
Odor Sensor FunctionDust Sensor FunctionPM2.5 Display FunctionFilter Replacement Indicator FunctionChild Lock FunctionSleep Mode Function
4.6Overall Rating
4.8Coverage Area (CADR)
4.7HEPA Filter Quality and Type
4.0Pre-filter and Filter Replacement
4.6Activated Carbon Filter (Odor Removal)
4.7Noise Level
4.9Air Quality Sensor and Auto Mode
4.5Manufacturer Reliability and Warranty
4.2Cost Performance
#2

Coway

AP-2015F Airmega 400 Smart Air Purifier

$366(incl. tax)Amazon price as of 2025-09-02

Smart air purifier with HEPA filter, auto mode, and filter alerts, designed for spaces up to 1,560 sq. ft.

Applicable Area1560 sq ftCADR (Smoke)- CFM
CADR (Dust)- CFMCADR (Pollen)- CFM
Filter TypeTrue HEPA, Active Carbon Filter, Pre-FilterNumber of Fan Speeds-
Noise Level (Min)22 dBNoise Level (Max)52 dB
Power Consumption66 WSmart FeaturesNo
Odor Sensor FunctionDust Sensor FunctionPM2.5 Display FunctionFilter Replacement Indicator FunctionChild Lock FunctionSleep Mode Function
4.5Overall Rating
4.5Coverage Area (CADR)
4.7HEPA Filter Quality and Type
4.3Pre-filter and Filter Replacement
4.5Activated Carbon Filter (Odor Removal)
4.6Noise Level
4.8Air Quality Sensor and Auto Mode
4.3Manufacturer Reliability and Warranty
4.2Cost Performance
#3

Winix

5510 Air Purifier

$179(incl. tax)Amazon price as of 2025-09-02

WINIX 5510 Air Purifier for Home Large Room Up to 1881 Ft², True HEPA, High Deodorization Carbon Filter.

Applicable Area1881 sq ftCADR (Smoke)- CFM
CADR (Dust)- CFMCADR (Pollen)- CFM
Filter TypeHEPA, CarbonNumber of Fan Speeds-
Noise Level (Min)27 dBNoise Level (Max)- dB
Power Consumption65 WSmart FeaturesAmazon Alexa, Google Assistant
Odor Sensor FunctionDust Sensor FunctionPM2.5 Display FunctionFilter Replacement Indicator FunctionChild Lock FunctionSleep Mode Function
4.5Overall Rating
4.5Coverage Area (CADR)
4.7HEPA Filter Quality and Type
4.3Pre-filter and Filter Replacement
4.5Activated Carbon Filter (Odor Removal)
4.6Noise Level
4.8Air Quality Sensor and Auto Mode
4.0Manufacturer Reliability and Warranty
4.3Cost Performance
#4

Winix

5520 Air Purifier

$189(incl. tax)Amazon price as of 2025-09-02

WINIX 5520 Air Purifier for large rooms up to 1882 Ft² with air quality monitor and true HEPA filter.

Applicable Area1881 sq ftCADR (Smoke)- CFM
CADR (Dust)- CFMCADR (Pollen)- CFM
Filter TypeHEPA, CarbonNumber of Fan Speeds-
Noise Level (Min)27 dBNoise Level (Max)- dB
Power Consumption50 WSmart FeaturesWifi
Odor Sensor FunctionDust Sensor FunctionPM2.5 Display FunctionFilter Replacement Indicator FunctionChild Lock FunctionSleep Mode Function
4.5Overall Rating
4.5Coverage Area (CADR)
4.7HEPA Filter Quality and Type
4.3Pre-filter and Filter Replacement
4.5Activated Carbon Filter (Odor Removal)
4.6Noise Level
4.8Air Quality Sensor and Auto Mode
4.0Manufacturer Reliability and Warranty
4.2Cost Performance
#5

LEVOIT

Air Purifiers Vital 200S-P

$159(incl. tax)Amazon price as of 2025-09-02

LEVOIT Air Purifier for large rooms up to 1875 sq ft with washable pre-filter and air quality monitor.

Applicable Area1875 sq ftCADR (Smoke)250 CFM
CADR (Dust)254 CFMCADR (Pollen)289 CFM
Filter Type3-Stage FilterNumber of Fan Speeds-
Noise Level (Min)- dBNoise Level (Max)- dB
Power Consumption- WSmart FeaturesApp
Odor Sensor FunctionDust Sensor FunctionPM2.5 Display FunctionFilter Replacement Indicator FunctionChild Lock FunctionSleep Mode Function
4.4Overall Rating
4.3Coverage Area (CADR)
4.5HEPA Filter Quality and Type
4.3Pre-filter and Filter Replacement
4.3Activated Carbon Filter (Odor Removal)
4.5Noise Level
4.7Air Quality Sensor and Auto Mode
4.0Manufacturer Reliability and Warranty
4.3Cost Performance