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Shark NeverChange Review [HP302]

Derek Hales

Written By: Derek Hales

Updated on:

Shark Neverchange Hero
98 Purification
100 Filters
94 Build Quality
100 Usability
100 Maintenance
98 Overall Score
Tested With Scoring System 1.1

Best For

  • Ideal for medium to large-sized rooms
  • High-odor rooms (bath, laundry room / mud rooms / etc.)
  • Needed for a quiet environment
  • Low-budget maintenance
  • Air quality information display


  • Plastic intake guards that extend off the body may be prone to cracks.
  • Does not have remote or app connectivity

Our Verdict

The Shark NeverChange is from the latest HP300 air purifier series from Shark. This model features a coverage area of 1,400 sq. ft. with exceptional purification power and excellent scores in display and controls. It has a convenient auto mode to adjust the purification fan speed to keep the air quality at a healthy level. Arguably most important, the Shark NeverChange filter will last 5 years (according to Shark). This makes the lifetime maintenance costs incredibly low.

Filter Type: Pre-Filter, Carbon, HEPA
Coverage Area: 1,400 sq. ft.
CADR: Unknown

In This Review
Purification Performance | Ozone Test | Filters | Coverage | Build Quality | Noise Test | Usability | Maintenance | Size | Specs | Product Evolution | Comparison | FAQs

Performance Summary

At Modern Castle we put air purifiers to the test.

We test 11 different factors that impact the performance, build quality, and usability of the air purifier. Below is a complete list of our testing categories and their performance.

Test TypeTest Data
PM2.5 (1 hour test)0.1 ppm
PM10 (1 hour test)0.2 ppm
Particles (1 hour test)17
AQI (1 hour test)1
Ozone Detected0.0 ppm
Filter QualityExceptional
Filter TypePre-filter, HEPA, Carbon, Ionizer
Coverage Area1,300 sq. ft.
Max Wind Speed8.9 mph
Noise Test53.3 dB

Purification Performance

To test the purification performance of the Shark NeverChange, we placed it in a medium sized room in our office (~14’ x 10`). Next, we lit incense to introduce smoke and other particulates into the air for 30 seconds. After, we use a professional air quality detector to take a measurement of the smoke filled air.

Air Quality Testing Meter
Electronic testing meter we use to measure particulates and air quality

Next, we run the air purifier on the highest fan speed for 2 hours, taking measurements of the air quality at the one hour mark and the end of the test. Here is what we found:

Performance MetricStarting MeasurementAfter 1 HourAfter 2 Hours
PM2.5114.2 ppm0.1 ppm0.1 ppm
PM10201.5 ppm0.2 ppm0.1 ppm

The Shark NeverChange scored exceptionally well in our testing. During testing, we measured the improvements of PM2.5 from 114.2 ppm to 0.1, PM10 from 201.5 ppm to 0.2, particulates from 10,978 to 17, and AQI from 181 to 1. On average, we see air purifiers reduce PM2.5 to 0.47 ppm and PM10 to 0.7 ppm after the 1-hour test.

Shark Neverchange Filters
Shark Neverchange Filters

Achieving this level of improvement within 1 hour is a fantastic performance indicator.

Below, we’ve included information on the testing criteria and what defines good vs. bad air quality. Simply, the lower the numbers the better.

Air Quality Pm 25 Index

Ozone Test

With most air purifiers ozone generation isn’t an issue. That said, some that use negative ion generators have the potential to create ozone. To test this, we run the Shark NeverChange, letting it run for 1 hour and measure the levels of ozone before and after with an ozone meter device.

Pre-test Ozone

0.0 ppm

Post-test Ozone

0.0 ppm

During our testing of the Shark NeverChange we had no measurable ozone produced.



The Shark NeverChange has its own NeverChange HEPA filter designed for long-lasting purification to reduce maintenance.

Shark Neverchange Pre Filter

Pre-Filter – The pre-filter catches larger particulates like dust, hair, and lint. The pre-filter does not need to be replaced. Instead, simply wipe it down periodically (update if / where needed).

Shark Neverchange Filter Fan

Activated Carbon – These filters focus on capturing VOCs, odors, and gasses that the pre-filter and the HEPA filter miss.

Shark Neverchange 3 In 1 Filter

HEPA – HEPA stands for High Efficiency Particulate Air [filter], which is common in most modern air purifiers. HEPA filters are able to capture particulates as small as 0.3 microns.


The Shark NeverChange HP302 has a coverage area of 1,400 sq. ft. It is best suited for medium to large rooms. This puts the Shark NeverChange above our testing average of 716 sq. ft. coverage based on all the air purifiers we’ve tested to date.

Coverage Area

1,400 sq. ft.



Wind Speed Test

Our wind speed test uses an anemometer placed directly on the air vents of the Shark NeverChange to measure the fan speeds in miles per hour. We run it on the lowest and highest fan speeds and record the speed of the air coming out of the device.

Shark Neverchange Max Windspeed
Shark Neverchange Max Windspeed

Minimum Wind Speed

2.0 mph

Maximum Wind Speed

8.9 mph

When placed on the maximum fan, we measured a wind speed of 8.9 mph. Compared to our current testing average of 12.19 mph, it measured 3.29 mph less. This is exceptional performance for an air purifier of this size and coverage.


Build Quality Test

Overall, the Shark NeverChange scored excellent in build quality. Specifically, the fan, display, and control features received exceptional ratings.

PartBuild Quality
BodyVery Good
Shark Neverchange Front
Shark Neverchange Front

However, we noticed the plastic intake guards that extend off the body on the side may be prone to damage over time. These panels are only reinforced by four plastic bridges that connect the panel to the main body. As a result, we scored the purifier’s body rating as very good.

Noise Test

To determine the level of noise that the Shark NeverChange creates we use a sound meter and measure the decibel levels on both the lowest and highest fan speeds. In addition, we measure the ambient noise levels of the room as a baseline comparison.

Ambient Noise

43.0 dB

Min Noise

43.9 dB

Max Noise

53.3 dB

At the start of the test, we measured the ambient noise at 43 dB. We then increased the Shark NeverChange to its maximum fan speed measuring 53.3 dB. On average, we see air purifiers produce 61.5 dB on maximum fan speed. This puts the NeverChange 8.2 dB quieter than our current testing average.



Shark Neverchange Air Quality Ring
Shark Neverchange Air Quality Ring

The Shark NeverChange scored top ratings in Usability. It has an exceptional front-facing display of air quality information, an auto mode for air purification autonomy and efficiency, and finally, an odor neutralizer to help remove unwanted odors.



Shark Neverchange Odor Neutralizer Pod
Shark Neverchange Odor Neutralizer Pod

Setup took under 3 minutes with the Shark NeverChange being almost plug-in ready. Before plugging in the system, you’ll need to remove the plastic covering from the 3-in-1 filter already inside the system. Finally, before turning the system on, you’ll need to insert the Shark odor neutralizer into the socket on top. Adjust the odor neutralizer to your desired strength.


Controls & Display

The Shark NeverChange scored exceptionally well in display features with its large front-facing air quality meter and touchscreen controls on top. The Neverchange features 5 fan speeds, an auto mode that automatically adjusts as the air quality changes, a shutoff timer, a display light dimmer, and a locking feature. Most impressively, the front-facing display gives you information on PM1.0, PM2.5, and PM10 levels in addition to the air quality percentage.

Shark Neverchange Controls
Shark Neverchange Controls

Wireless Controls

This specific model (HP302) we tested does have the option to connect to a remote that is sold separately. The 300 series does not have app or wifi connectivity.

In The Box

  • Shark Never Change HP302
  • User Manual
  • Odor Neutralizer
Shark NeverChange Unboxed
Shark Neverchange Unboxed


The Shark NeverChange has an estimated yearly maintenance cost of $20. The following are the major maintenance tasks for the SharkNeverChange.

According to Shark, the NeverChange filter should last 5 years.

TaskDescriptionEst. Annual Cost
HEPA FilterReplace every 5 yearsUnknown
Carbon FilterReplace every 5 yearsUnknown
Pre FilterWash As Needed$0
Odor NuetralizerReplace Every 6 Months$15

Size & Dimensions

The Shark NeverChange is a medium-sized air purifier designed to cover medium to large areas. The dimensions are 22”(H) x 13”(L) x 143”(W) – 12.2 lbs.  This system measures just under our current average of 25.2”(H) x 14.3”(L) x 14.3”(W) – 22.7 lbs.

Height22.0″ (55.9 cm)
Length13.0″ (33.0 cm)
Width13.0″ (33.0 cm)
Weight12.2 lbs. (5.5 kg)


The following table details the product specifications according to the manufacturer.

Manufacturer Specifications
ModelNeverChange Max HP302 Series
Height22.0″ (55.9 cm)
Length13.0″ (33.0 cm)
Width13.0″ (33.0 cm)
Weight12.2 lbs. (5.5 kg)
FilterPre-filter, HEPA, Carbon, Ionizer
Noise Levels53 dB (max)
Coverage Area1,400 sq. ft.
Wi-Fi CompatibleNo
Warranty2 years
PriceCheck Price

Product Evolution

The Shark NeverChange HP302 is part of the new HP300 air purifier series from Shark, released in early August 2023. The line of air purifiers from Shark has evolved through several models including the Shark 3-in-1, Shark Air Purifier, Shark HP232, and Shark HP100 / HP200 series. 

The biggest change on the NeverChange series is the ultra long HEPA filter life. According to Shark, the HEPA filter will last 5 years. If this is indeed true, it would be among the longest lasting HEPA filters on the market.

Only having to replace the filter once every 5 years makes the lifetime cost of ownership incredibly low.

How does the Shark NeverChange compare?

Below is a complete list of our air purifier tests and critical product data compared side by side to the average based on all of our air purifier tests to date.

The Shark NeverChange had an overall rating of exceptional with high scores in purification performance, filters, display / controls, and usability. In these categories, the Shark NeverChange outperformed their respective testing averages.

Test TypeTest DataAvg. Data
PM2.5 (1 hour test)0.1 ppm0.47 ppm
PM10 (1 hour test)0.2 ppm0.7 ppm
Particles (1 hour test)1757.07
AQI (1 hour test)11.81
Ozone Detected0.0 ppm0.0 ppm
Filter QualityExceptionalExcellent
Filter Typepre-filter, HEPA, Carbon, Ionizern/a
Coverage Area1,300 sq. ft.716 sq. ft.
CADRUnknown283 CFM
Max Wind Speed8.9 mph12.2 mph
Noise Test53.3 dB61.7 dB

When comparing the Shark NeverChange to similar air purifiers with coverage, performance, and filter maintenance, this air purifier stands out as a top competitor. Specifically with the filter longevity, according to the manufacturer, the filter will last for 5 years, depending on use. While we weren’t able to test this claim, it would be one of the longest life expectancy for any air purifier.

Excluding the filter longevity, the purification performance and usability ratings can be compared to several high-performing air purifiers. Models like the TruSens Z-3500, IQAirHealth Pro, Oransi Mod+, and Medify MA-50 all have similar performance and usability ratings.

Other Air Purifiers to Consider

Airdoctor 5500 Front

AirDoctor 5500

The AirDoctor 5500 is a large air purifier designed for large homes or small offices.

The AirDoctor 5500 would be an excellent choice for purification performance and large coverage. With its 6 patented filter designs, it can handle large open areas.

TruSens Z-3500 air purifier

TruSens Z-3500

The TruSens Z-3500 is a smart air purifier with excellent performance.

The Z-3500 can cover 1,425 sq. ft. With an auto mode and custom scheduling, the TruSens is a great choice for a hands-off air purifier.

Alen Breathesmart 75i

Alen BreatheSmart 75i

The Alen BreatheSmart Classic air purifier is a large purifier designed for XL spaces, cleaning up to 1,100 sf. every 30 minutes.

BreatheSmart 75i would be a good selection if noise is a factor. While it is not the quietest air purifier we have tested, for large rooms, this does have a quieter max fan speed of 50.3 dB, which is below our testing average of 61.5 dB.


Where is the best place to put a Shark NeverChange?

According to the Shark user manual, it is recommended to place the purifier on a flat, level, floor surface, at least 3 inches away from walls and objects. Additionally, we recommend the system be placed in a medium to large room to fully utilize its coverage and odor neutralizer.

Does the Shark NeverChange cool the room?

Air Purifiers can change the room temperature due to the fans blowing the purified air. However, they do not operate like a traditional air conditioner. The air will not be cold.

Can HEPA filters remove mold spores?

Yes – they can remove mold spores from the air but do not kill the spores. If the filter does capture the spores and becomes damp, it could provide a space for mold to grow. Forcing you to replace the HEPA filter sooner. If you have mold growing on furniture or the building structure, we recommend safe disposal / cleaning with proper equipment to prevent further growth.

About Derek Hales

Derek HalesDerek Hales is the Founder and Editor-in-Chief of He has been featured in Fast Company, Reader's Digest, Business Insider,, She Knows, and other major publications. Derek has a Bachelor's Degree in Business Administration from Kansas State University. Hales has been testing and reviewing products for the home since 2014.