#46

BLUEAIR

BLUEAIR Blue Pure 511

Name: Blue Pure 511
Brand: BLUEAIR
SKU: B08KPJCDN6
Price: 89 JPY
Availability: InStock
Rating: 3.7875 (1 reviews)

Rating

Model: BLU-110344

$89(incl. tax)Amazon price as of 2025-09-02

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Product Overview

The Blue Pure 511 is a compact air purifier designed for small rooms, bedrooms, and offices. It utilizes Blueair's HEPASilent technology to remove 99.97% of airborne particles down to 0.1 microns. It features a washable pre-filter and is Energy Star certified. The unit operates quietly, with noise levels between 24 dB and 49 dB. It is suitable for rooms up to 432 sq ft and has a customizable design with different pre-filter colors available. The filter replacement is recommended every 6 months. It captures dust, pollen, smoke, pet dander, mold, chemicals, and even viruses and bacteria.

Product Specifications

Applicable Area

432sq ft

CADR (Smoke)

-CFM

CADR (Dust)

-CFM

CADR (Pollen)

-CFM

Filter Type

Activated Carbon

Number of Fan Speeds

Noise Level (Min)

24dB

Noise Level (Max)

49dB

Power Consumption

-W

Smart Features

Size & Weight

Weight

5.24 pounds

Hight

13.9"

Width

7.9"

Depth

7.9"

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 an odor sensor function. Therefore, it cannot automatically adjust the purification level based on detected odors, requiring manual adjustments.

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 dust sensor function. Therefore, it cannot automatically adjust the purification level based on detected dust levels, requiring manual adjustments.

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 PM2.5 display function. Therefore, users cannot visually monitor the real-time air quality in the room, making it difficult to assess the purifier's effectiveness.

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 filter replacement LED indicates when the filter needs to be replaced, ensuring optimal efficiency and preventing reduced performance due to a clogged filter. This helps maintain consistent air quality.

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

This air purifier does not have a child lock function. Therefore, there is no way to prevent unintended changes to the settings, which may be a concern for households with young children.

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

This air purifier does not have a sleep mode function. However, the unit operates quietly, which makes it suitable for use during sleep, though without specific sleep mode optimizations.

SHOPSTAFF Rating Score

#46

Ranked #46 out of 100 products in Category

3.8

Overall Rating

The Blue Pure 511 is a compact and efficient air purifier suitable for small rooms. It offers good performance for its price range, but lacks advanced features found in higher-end models. It's a good option for basic air purification needs.

Coverage Area (CADR)

3.5

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

The Blue Pure 511 is designed for rooms up to 432 sq ft, making it suitable for smaller spaces like bedrooms or offices. It may not be sufficient for larger living areas requiring a higher CADR.

HEPA Filter Quality and Type

4.0

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

Utilizes HEPASilent technology, capturing 99.97% of particles down to 0.1 microns, including dust, pollen, and smoke. This ensures effective air purification for allergy sufferers and those concerned about air quality.

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

Features a washable pre-filter, extending the life of the main filter and reducing long-term costs. Filter replacement is recommended every 6 months, ensuring consistent performance and air quality.

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

Includes an activated carbon filter, effectively removing odors, gases, and VOCs from the air. This is beneficial for households with pets or those sensitive to smells and chemical pollutants.

Noise Level

4.5

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

Operates quietly, with noise levels between 24 dB and 49 dB, making it suitable for bedrooms and other quiet environments. The low noise level ensures undisturbed rest and relaxation.

Air Quality Sensor and Auto Mode

2.0

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 product information does not mention an air quality sensor or auto mode. Therefore, the fan speed must be manually adjusted based on the user's perception of air quality.

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 been an industry leader since 1996, indicating a strong reputation for performance and innovation. This provides some assurance of product quality and durability.

Cost Performance

4.0

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

At $89.99, the Blue Pure 511 offers good value for its features and performance. It's an affordable option for those seeking basic air purification without advanced functionalities.

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

Limited coverage area
Filter needs regular replacement
Touch control can be confusing

Recommended For

Individuals with small rooms
People sensitive to noise
Users looking for an affordable air purifier

Not Recommended For

Those with large spaces
Users requiring smart features
People with severe allergies needing advanced filtration

Suitable For

Bedrooms
Small offices
Nurseries

Not Suitable For

Large living rooms
Open-concept spaces
Outdoor use

Frequently Asked Questions (FAQ)

Q.Is the Blue Pure 511 suitable for a small bedroom?

A.Yes, the Blue Pure 511 is designed for small rooms, cleaning a 180sqft room in about 12.5 minutes. It's compact and operates quietly, making it ideal for bedrooms.

Q.Is the Blue Pure 511 suitable for a small bedroom?

A.Yes, the Blue Pure 511 is designed for small rooms, cleaning a 180sqft room in about 12.5 minutes. It's compact and operates quietly, making it ideal for bedrooms.

Q.How often should I replace the filter in the Blue Pure 511?

A.It's recommended to replace the filter every 6 months for optimal performance. The air purifier has a filter replacement LED that will turn red when it's time to replace the filter.

Q.How often should I replace the filter in the Blue Pure 511?

A.It's recommended to replace the filter every 6 months for optimal performance. The air purifier has a filter replacement LED that will turn red when it's time to replace the filter.

Q.What size room is best for the Blue Pure 511?

A.The Blue Pure 511 is best for rooms around 192 square feet to ensure it cleans the air at the recommended rate of 4 times every 12.5 minutes.

Q.What size room is best for the Blue Pure 511?

A.The Blue Pure 511 is best for rooms around 192 square feet to ensure it cleans the air at the recommended rate of 4 times every 12.5 minutes.

Q.Does this air purifier help with allergies?

A.Yes, according to staff confirmation, the Blue Pure 511 can help with allergies. One staff member mentioned breathing easier after using it, and another noted a significant improvement in their breathing, especially in a room environment.

Q.Does this air purifier help with allergies?

Q.Is the Blue Pure 511 easy to use, especially for older people?

A.While some staff members find the touch controls modern and sleek, others find them less practical, especially regarding knowing when the unit is on or off. However, one staff member updated their confirmation, suggesting that the touch controls might be beneficial for older people or those with mobility issues as they may find tapping the top easier than turning a knob.

Q.Is the Blue Pure 511 easy to use, especially for older people?

Q.Is the Blue Pure 511 noisy?

A.No, the Blue Pure 511 is designed to be quiet. It operates at 24 dB on low, which is quieter than a whisper, and up to 49 dB on high.

Q.Is the Blue Pure 511 noisy?

A.No, the Blue Pure 511 is designed to be quiet. It operates at 24 dB on low, which is quieter than a whisper, and up to 49 dB on high.

Q.What does the Blue Pure 511 filter out?

A.The Blue Pure 511 uses HEPASilent dual filtration technology to remove 99.97% of airborne particles, including pollen, cooking odors, smoke, dust, pet dander, mold, chemicals, allergen matter, viruses, and bacteria.

Q.What does the Blue Pure 511 filter out?

Q.Does the Blue Pure 511 have a noticeable smell?

A.No, according to staff confirmation, the Blue Pure 511 does not emit any noticeable smells. In fact, one staff member noted that it effectively got rid of a burnt smell in their kitchen.

Q.Does the Blue Pure 511 have a noticeable smell?

A.No, according to staff confirmation, the Blue Pure 511 does not emit any noticeable smells. In fact, one staff member noted that it effectively got rid of a burnt smell in their kitchen.

Q.Is this product energy efficient?

A.Yes, it is Energy Star certified as most efficient. Blueair air purifiers use less energy than a light bulb.

Q.Is this product energy efficient?

A.Yes, it is Energy Star certified as most efficient. Blueair air purifiers use less energy than a light bulb.

SHOPSTAFF Rating Ranking

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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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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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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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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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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 511

Product Overview

Product Specifications

Size & Weight

Features

SHOPSTAFF Rating Score

Brand & Manufacturer Details

Considerations

Recommended For

Not Recommended For

Suitable For

Not Suitable For