#15

BLUEAIR

BLUEAIR Blue Pure 511i Max

Name: Blue Pure 511i Max
Brand: BLUEAIR
SKU: B08KPJ76RR
Price: 119 JPY
Availability: InStock
Rating: 4.225 (1 reviews)

Rating

Model: 3132111100

$119(incl. tax)Amazon price as of 2025-09-02

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Product Overview

The BLUEAIR Blue Pure 511i Max is designed for small to medium rooms, utilizing HEPASilent technology for efficient and quiet air purification. It cleans up to 465 sqft in 30 minutes, removing 99.97% of particles down to 0.1 microns. Features include app control, Alexa compatibility, a washable pre-filter, and a filter replacement indicator. It's ideal for homes with pets, allergies, or concerns about dust, smoke, and odors. The customizable design and quiet operation make it suitable for any home.

Product Specifications

Applicable Area

465sq ft

CADR (Smoke)

125CFM

CADR (Dust)

125CFM

CADR (Pollen)

125CFM

Filter Type

Activated Carbon

Number of Fan Speeds

Noise Level (Min)

19dB

Noise Level (Max)

48dB

Power Consumption

20W

Smart Features

Yes

Size & Weight

Weight

2.84 pounds

Hight

18.9"

Width

10.6"

Depth

10.6"

Features

Odor Sensor Function

Feature Description

Equipped with a sensor that detects odors in the room and automatically adjusts the air purification level. This allows for quicker response to sudden smells, such as cooking odors or pet odors, and ensures the air remains fresh without requiring manual adjustments.

About This Product

This air purifier does not have a dedicated odor sensor function. While the carbon filter helps reduce odors, it doesn't automatically adjust settings based on odor detection. Users need to manually adjust settings based on their needs.

Dust Sensor Function

Feature Description

Equipped with a sensor that detects dust particles in the air and automatically adjusts the air purification level. The air purifier can automatically increase its fan speed when it detects a high concentration of dust, like during cleaning or when opening windows, ensuring efficient particle removal.

About This Product

This air purifier does not have a dedicated dust sensor function. While the HEPA filter captures dust, it doesn't automatically adjust settings based on dust levels. Users need to manually adjust settings based on their needs.

PM2.5 Display Function

Feature Description

Displays the concentration of PM2.5 (fine particulate matter) in the air. Allows you to visually monitor the air quality in your room. You can use this information to better understand the effectiveness of the air purifier and take appropriate actions based on real-time air quality data.

About This Product

This air purifier does not have a dedicated PM2.5 display function. While the unit cleans the air of particulate matter, it does not provide a real-time readout of PM2.5 levels. Air quality is indicated by a 5-color AQI.

Filter Replacement Indicator Function

Feature Description

Indicates when the filter needs to be replaced. This ensures that the air purifier operates at optimal efficiency. Prevents reduced air purification performance due to a clogged filter, maintaining consistent air quality.

About This Product

The air purifier includes a filter replacement indicator, accessible via the Blueair app. This ensures timely filter replacement, maintaining optimal performance and air quality. The app uses a RealTrack algorithm for accurate filter life tracking.

Child Lock Function

Feature Description

Disables the control panel to prevent unintended changes to the settings. This prevents children from accidentally turning off the air purifier or changing the settings. Provides peace of mind when the air purifier is placed in areas accessible to children.

About This Product

The air purifier features a child lock function, preventing unintended changes to settings. This provides peace of mind, especially in households with children, ensuring the unit operates as intended without accidental interference.

Sleep Mode Function

Feature Description

Reduces the operating noise and dims the display lights for quiet operation during sleep. Allows for comfortable use in the bedroom without disturbing sleep. This is ideal for those who are sensitive to noise or light while sleeping.

About This Product

The air purifier includes a night mode, reducing operating noise and dimming lights for quiet operation during sleep. This is ideal for bedrooms, ensuring undisturbed rest while maintaining air purification throughout the night.

SHOPSTAFF Rating Score

#15

Ranked #15 out of 100 products in Category

4.2

Overall Rating

The Blue Pure 511i Max is a good option for small to medium rooms, offering app control and quiet operation. It lacks some advanced features found in higher-end models, but it provides good value for its price. Expect a lifespan of several years with proper maintenance.

Coverage Area (CADR)

3.8

Rating Criteria Explanation

The Coverage Area, often indicated by the Clean Air Delivery Rate (CADR) in cubic feet per minute (CFM) or square footage, is a critical factor. It determines how large of a room the air purifier can effectively clean. Consider the size of the room where you intend to use the air purifier. If you have a large living room, a model with a higher CADR is essential to ensure that the air is being effectively filtered throughout the space. Choosing an air purifier with an inadequate CADR for the room size will result in subpar air purification. DBFIT's AP300 is designed for large rooms up to 3000 sq. ft, which is a considerable coverage area, so if you have a smaller space, you may want to look for a more appropriately sized unit, while those with very large areas should confirm that this CADR is sufficient.

Rating Comments

With a CADR suitable for rooms up to 465 sq. ft, this air purifier is best suited for small to medium-sized rooms. It may not be sufficient for larger living spaces, requiring users to consider placement and usage accordingly.

HEPA Filter Quality and Type

4.5

Rating Criteria Explanation

The HEPA filter is the heart of any HEPA air purifier. It's crucial to understand the quality and type of HEPA filter used. A true HEPA filter is certified to capture 99.97% of particles as small as 0.3 microns, including dust, pollen, pet dander, and mold spores. Some air purifiers may use 'HEPA-like' or 'HEPA-type' filters, which may not meet the same rigorous standards. Ensure the product explicitly states it uses a 'true HEPA' filter. Also, consider if the filter is combined with other filtration layers (e.g., activated carbon for odor removal). The DBFIT AP300 utilizes a HEPA filter; confirming it's a 'true HEPA' filter based on specifications is advisable.

Rating Comments

Equipped with HEPASilent dual filtration technology, the air purifier removes 99.97% of particles down to 0.1 microns, ensuring high-quality air purification. This is effective for capturing common allergens and pollutants.

Pre-filter and Filter Replacement

4.3

Rating Criteria Explanation

A pre-filter is usually the first line of defense in an air purifier, capturing larger particles like dust and pet hair. This extends the life of the more expensive HEPA filter. Look for a model with a washable pre-filter for easy maintenance. Filter replacement is an ongoing cost, so consider the cost and availability of replacement HEPA filters. Some manufacturers offer subscription services for filter replacements. Check how often the filters need to be replaced (usually every 6-12 months, depending on usage and air quality) and factor that into the overall cost. The DBFIT AP300 features a washable filter which will reduce your long term costs, and should be considered a major benefit.

Rating Comments

The washable pre-filter extends the life of the main filter, reducing long-term costs. The app provides filter tracking, indicating when replacement is needed, ensuring optimal performance and timely maintenance.

Activated Carbon Filter (Odor Removal)

4.0

Rating Criteria Explanation

While HEPA filters excel at removing particulate matter, they don't address odors, gases, or volatile organic compounds (VOCs). An activated carbon filter is essential for removing these pollutants. The thickness and quality of the carbon filter significantly impact its effectiveness. Some air purifiers have a separate activated carbon filter, while others combine it with the HEPA filter. If you are sensitive to odors or live in an area with high levels of air pollution, prioritizing an air purifier with a substantial activated carbon filter is important. Ensure the carbon filter is replaceable as it will become saturated over time. Examine the product details to see if the DBFIT AP300 has one or if that needs to be supplemented with another filter.

Rating Comments

The activated carbon filter effectively traps light household odors from smoke, pets, and cooking, contributing to improved air quality. Consider the need for specialized filters based on specific odor concerns.

Noise Level

4.7

Rating Criteria Explanation

The noise level of an air purifier is a significant consideration, especially if you plan to use it in a bedroom or office. Air purifiers have different fan speeds, and the noise level increases with higher speeds. Look for a model with a low noise level (measured in decibels, dB) on its lowest setting. Some air purifiers have a 'sleep mode' that operates at an even quieter level. Consider your sensitivity to noise and the intended use of the air purifier when evaluating noise levels. If possible, read reviews to get an idea of the actual noise level in real-world use. The DBFIT AP300 may not have a published noise level so reviews are important.

Rating Comments

Operating at a low noise level, especially on the low setting (19 dB), the air purifier is suitable for bedrooms and other quiet environments. The noise level remains reasonable even on higher settings (48 dB).

Air Quality Sensor and Auto Mode

4.2

Rating Criteria Explanation

Many modern air purifiers come equipped with an air quality sensor that detects the level of pollutants in the air. This sensor allows the air purifier to automatically adjust the fan speed based on the air quality, optimizing performance and energy consumption. Look for a model with a reliable and accurate air quality sensor. The 'auto mode' is a convenient feature that allows the air purifier to run efficiently without constant manual adjustments. The DBFIT AP300 includes a PM2.5 display and an air quality sensor, which is a notable feature for automatic operation.

Rating Comments

The air purifier features a 5-color AQI indicator and auto mode, adjusting fan speed based on air quality. This provides convenient, hands-free operation, optimizing performance and energy consumption based on real-time conditions.

Manufacturer Reliability and Warranty

4.0

Rating Criteria Explanation

The reliability of the manufacturer and the warranty offered are crucial indicators of product quality and durability. Research the manufacturer's reputation for producing reliable air purifiers. Look for customer reviews and ratings to get an idea of their experience with the brand. A longer warranty period (e.g., 2 years or more) indicates that the manufacturer has confidence in their product. Also, check the warranty terms and conditions to understand what is covered. A good warranty should cover defects in materials and workmanship. Having readily available customer support is also a plus. Unknown reliability may be a factor for DBFIT and should be investigated before purchasing.

Rating Comments

Blueair has a good reputation and a history in the air purification market, suggesting reasonable reliability. Check warranty details for specific coverage and duration to ensure peace of mind with your purchase.

Cost Performance

4.3

Rating Criteria Explanation

Cost performance is the final balancing act. While it's tempting to go for the cheapest option, consider the long-term costs. Factor in the cost of replacement filters, electricity consumption, and the potential lifespan of the air purifier. A slightly more expensive model with better filter life, lower energy consumption, and a longer warranty might be a better value in the long run. Compare the features and performance of different models within your budget and choose the one that offers the best balance of price and performance. Assess whether the DBFIT AP300's price aligns with its features and coverage area compared to other available options.

Rating Comments

Priced at $119.99, the air purifier offers a good balance of features and performance for its cost. Consider the long-term filter replacement expenses to fully assess the overall cost-effectiveness of the unit.

Brand & Manufacturer Details

BLUEAIR

Since 1996, Blueair has been an industry leader in performance, innovation, and intelligent design–creating best-in-class products that support better health with every breath.

Considerations

Ensure proper filter installation
Wash pre-filter regularly
Monitor filter life via app

Recommended For

Allergy sufferers
Pet owners
Those seeking quiet air purification

Not Recommended For

Those needing very large room coverage
Individuals on a very tight budget

Suitable For

Bedrooms
Small living rooms
Home offices

Not Suitable For

Large open-plan spaces
Industrial environments
none in particular

Frequently Asked Questions (FAQ)

Q.I'm concerned about the noise level, especially for bedroom use. How loud is the Blue Pure 511i Max?

A.The Blue Pure 511i Max operates very quietly. On the low setting, it produces only 19 dB, which is quieter than a whisper. Even on the highest setting, it doesn't exceed 48 dB. There's also a Night mode with dimmed lights and the lowest fan speed for undisturbed sleep. According to staff confirmation, the noise level is comparable to pleasant white noise and is appreciated for its ability to mask other sounds.

Q.I'm concerned about the noise level, especially for bedroom use. How loud is the Blue Pure 511i Max?

Q.How effective is this air purifier for removing common allergens and odors, especially if I have pets?

A.The Blue Pure 511i Max utilizes HEPASilent dual filtration technology, which removes at least 99.97% of airborne particles, including pet dander, pollen, mold, allergens, dust, viruses, and smoke, down to 0.1 microns. It also has a carbon filter that traps light household odors from smoke, pets, and cooking. Staff confirmation mentions its effectiveness in absorbing fumes and odors from cooking, making it suitable for kitchens without proper ventilation.

Q.How effective is this air purifier for removing common allergens and odors, especially if I have pets?

Q.How often do I need to replace the filters, and is it easy to track filter life?

A.The filters typically last up to 9 months. The air purifier uses a RealTrack algorithm that accurately calculates the remaining filter lifetime based on fan speed, usage time, and pollution levels. The Blueair smart air purifier app provides filter tracking, so you'll know when it's time for a replacement. Replacement filters are readily available. A staff confirmation mentions replacing the filters every 6-9 months with continuous operation.

Q.How often do I need to replace the filters, and is it easy to track filter life?

Q.I have a large room. Is this air purifier powerful enough, or should I consider a different model?

A.The Blue Pure 511i Max is designed to clean a 465 sqft living space in 30 minutes, or 193 sqft in about 12.5 minutes on high. While it can handle larger rooms, its effectiveness is optimized for the recommended room sizes. For larger spaces, consider using multiple units or a model designed for larger square footage. Staff confirmation from a user with a larger home indicates satisfaction with two units covering both the living room and bedroom.

Q.I have a large room. Is this air purifier powerful enough, or should I consider a different model?

Q.I'm concerned about mold in my home. Will this air purifier help with that?

A.The Blue Pure 511i Max uses a HEPA filter which is effective at removing mold spores from the air, which can help improve air quality. Staff confirmation mentions that this purifier removes mold with a proper HEPA filter, giving them peace of mind while waiting for a mold inspection. However, it's important to address the source of the mold to prevent it from recurring.

Q.I'm concerned about mold in my home. Will this air purifier help with that?

SHOPSTAFF Rating Ranking

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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 Area	3385 sq ft	CADR (Smoke)	- CFM
CADR (Dust)	- CFM	CADR (Pollen)	- CFM
Filter Type	Activated Carbon	Number of Fan Speeds	-
Noise Level (Min)	- dB	Noise Level (Max)	35 dB
Power Consumption	4 W	Smart Features	Yes

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

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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 Area	1560 sq ft	CADR (Smoke)	- CFM
CADR (Dust)	- CFM	CADR (Pollen)	- CFM
Filter Type	True HEPA, Active Carbon Filter, Pre-Filter	Number of Fan Speeds	-
Noise Level (Min)	22 dB	Noise Level (Max)	52 dB
Power Consumption	66 W	Smart Features	No

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

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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 Area	1881 sq ft	CADR (Smoke)	- CFM
CADR (Dust)	- CFM	CADR (Pollen)	- CFM
Filter Type	HEPA, Carbon	Number of Fan Speeds	-
Noise Level (Min)	27 dB	Noise Level (Max)	- dB
Power Consumption	65 W	Smart Features	Amazon 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

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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 Area	1881 sq ft	CADR (Smoke)	- CFM
CADR (Dust)	- CFM	CADR (Pollen)	- CFM
Filter Type	HEPA, Carbon	Number of Fan Speeds	-
Noise Level (Min)	27 dB	Noise Level (Max)	- dB
Power Consumption	50 W	Smart Features	Wifi

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

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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 Area	1875 sq ft	CADR (Smoke)	250 CFM
CADR (Dust)	254 CFM	CADR (Pollen)	289 CFM
Filter Type	3-Stage Filter	Number of Fan Speeds	-
Noise Level (Min)	- dB	Noise Level (Max)	- dB
Power Consumption	- W	Smart Features	App

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

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See more [2025 Edition] 100 Best HEPA Air Purifiers! Selection Guide and Latest Models Introduction comparisons

BLUEAIR Blue Pure 511i Max

Product Overview

Product Specifications

Size & Weight

Features

SHOPSTAFF Rating Score

Brand & Manufacturer Details

Considerations

Recommended For

Not Recommended For

Suitable For

Not Suitable For