Shark HE402 Air Purifier Review

by Shark

efficient air purification device

Looking for a powerful, efficient, and quiet air purifier? The Shark HE402 Air Purifier is your answer.

With its true HEPA filter, it captures 99.98% of particles, allergens, and smoke, ensuring fresh air in your space.

Cleaning up to 1000 square feet, its Odor Lock technology eliminates unpleasant smells while the 4 fan airflow distributes purified air evenly.

With ultra-fast and ultra-quiet operation, the HE402 keeps your environment clean without disrupting your peace.

Experience the power of the Shark HE402 Air Purifier for a healthier home today.

Key Takeaways

  • Sleek and stylish appearance
  • Advanced filtration system with True HEPA and NANOSEAL filters
  • Effective odor elimination technology
  • High CADR and ACH ratings for efficient air purification

During your experience with the Shark HE402 Air Purifier, you may notice changes in air quality when performing certain activities. The purifier is equipped with an advanced Clean Sense IQ system that tracks and adjusts air quality automatically.

While the air quality monitor may always show 100%, it does detect changes with specific activities such as handling litter or cooking. It's important to note that deep cleaning and dusting can significantly affect air quality, as the purifier captures particles, dust, and allergens.

Some users have reported that the purifier can be a bit loud on high settings, while others have found that the auto feature may be sensitive, turning up to high when vaping.

Design and Size

Moving on to the design and size of the Shark HE402 Air Purifier, you'll appreciate its sleek and stylish appearance. The purifier features a compact and modern design that blends seamlessly with any home decor.

With dimensions of 9.8 x 8.4 x 24.2 inches, it's compact enough to fit comfortably in any room without taking up too much space. The purifier's intuitive control panel is conveniently placed on the top, allowing for easy access and operation.

The smooth curves and clean lines of the purifier's exterior not only enhance its aesthetic appeal but also facilitate easy cleaning and maintenance.


Now let's delve into the filters of the Shark HE402 Air Purifier and see how they contribute to its impressive performance.

  1. True HEPA Filter: The Shark HE402 Air Purifier is equipped with a True HEPA filter that captures an astounding 99.98% of particles, dust, allergens, and smoke. This high-efficiency filter ensures that the air in your space is purified to the highest standard.
  2. NANOSEAL Filter: The purifier also features Shark's NANOSEAL Filter with true HEPA technology, which is capable of capturing particles as small as 0.1-0.2 microns. This means that even the tiniest contaminants are effectively removed from your indoor air, leaving it clean and fresh.
  3. Advanced Odor Lock: The Shark HE402 Air Purifier is equipped with an Advanced Odor Lock system that includes odor guard technology. This feature helps to eliminate unpleasant odors from your space, ensuring that the air you breathe isn't only clean but also free from unwanted smells.

With these advanced filters, the Shark HE402 Air Purifier ensures that your indoor air is thoroughly purified, providing you with a healthy and comfortable living environment.


To determine the effectiveness of the Shark HE402 Air Purifier, you need to consider its CADR (Clean Air Delivery Rate) and ACH (Air Changes per Hour).

The CADR measures how quickly the purifier can clean the air in a room, while the ACH indicates how many times the purifier can completely exchange the air in a given period.

The Shark HE402 has a CADR of 240 for dust, 230 for pollen, and 220 for smoke, which means it can effectively remove these particles from the air.

Additionally, it has an ACH of 4, which means it can completely exchange the air in a 1000 sq. ft. room four times per hour.

With its high CADR and ACH, the Shark HE402 is capable of providing efficient and thorough air purification.

Customer Ratings

When considering the customer ratings for the Shark HE402 Air Purifier, it's important to note that many users have praised its powerful and efficient performance. Here are three key points to consider:

  1. Quiet Operation: Numerous customers have highlighted the ultra-fast and ultra-quiet operation of the purifier. This feature allows you to enjoy clean air without any disturbance or noise.
  2. Effective Air Purification: Users have reported that the True HEPA filter with Advanced Odor Lock effectively captures particles, dust, allergens, and smoke. It provides a noticeable improvement in air quality, especially for those with allergies or respiratory issues.
  3. Automatic Air Quality Monitoring: The Clean Sense IQ technology of the HE402 tracks and adjusts air quality automatically. While some users have mentioned minor discrepancies in the air quality monitor, overall, the purifier detects changes in the room and purifies the air instantly.

Frequently Asked Questions

Can the Shark HE402 Air Purifier Be Used in Larger Rooms or Open Floor Plans?

Yes, the Shark HE402 Air Purifier can be used in larger rooms or open floor plans. It cleans up to 1000 sq. ft. with its 4 fan airflow, true HEPA filter, and advanced odor lock.

How Often Do I Need to Replace the Filters in the Shark HE402 Air Purifier?

You should replace the filters in the Shark HE402 Air Purifier every 6-12 months, depending on usage and air quality. Regular filter replacement ensures optimal performance and efficient removal of particles, dust, allergens, and smoke.

Can the Shark HE402 Air Purifier Be Used in a Bedroom Without Disturbing Sleep Due to Noise?

Yes, the Shark HE402 Air Purifier can be used in a bedroom without disturbing sleep. It has ultra-quiet operation and adjustable fan settings to ensure a peaceful environment while purifying the air.

Does the Shark HE402 Air Purifier Have a Timer Function for Automatic Shut-Off?

Yes, the Shark HE402 Air Purifier does have a timer function for automatic shut-off. You can set the timer to turn off the purifier after a certain period of time, providing convenience and energy efficiency.

Can the Shark HE402 Air Purifier Be Used in a Household With Pets?

Yes, the Shark HE402 Air Purifier can be used in a household with pets. Its True HEPA filter captures 99.98% of particles, including pet dander and allergens, ensuring cleaner and fresher air for you and your pets.

<a href="" target="_blank"></a>


I am Ahmad Yar, an air purification expert specializing in all aspects of creating a healthier and cleaner environment.

If you would like to learn more about me check the about page here.

Air Purey Categories

Check All Air Purey Categories


What Causes Mold in Microgreens

Do you struggle with mold in your microgreens?Discover the common culprits behind this pesky issue.Poor air circulation, excessive moisture, improper sanitation practices, contaminated growing medium, and inadequate temperature control can all...

read more

What Causes Mold on Bricks

Do you ever wonder why mold grows on your bricks? Excessive moisture, inadequate ventilation, lack of sunlight, organic matter accumulation, and a poor drainage system are all culprits.These factors create the ideal environment for mold growth....

read more

What Causes Mold on Hardwood Floors

Do you know what causes mold on your hardwood floors?Excessive moisture, inadequate ventilation, water leaks and spills, high humidity levels, and improper cleaning and maintenance can all contribute to the growth of mold.In this article, we...

read more

What Detergent Kills Mold

Are you struggling to find a detergent that effectively eliminates mold? Look no further! In this article, we will explore the top contenders for mold-killing power.From the potent bleach to the natural vinegar, each option has its own unique benefits....

read more


Submit a Comment

Your email address will not be published. Required fields are marked *