Levoit Core 300 Air Purifier – Review

Levoit is a company that brings many innovations to the market. They make different types of air purifiers. Levoit Core 300 is a simple air purifier with a fantastic design.

It is a small air purifier that lacks additional options, but a reliable and efficient engine allows this air purifier to be beneficial in large rooms.

Levoit Core 300 Air Purifier Review

Core 300 is a powerful air purifier with an improved filtration system. It uses a HEPA filter to remove 99.97% of airborne particles as large as 0.3 microns. Pollen, dust, pet hair, pet dander, and bad odors are easily removed with this True HEPA air purifier. 

Levoit Core 300 Air Purifier - Review

Thanks to the powerful engine that pulls air through filters, Levoit Core 300 can do decent work even in a room as large as 219 square feet. An interesting fact is that even with a powerful engine that can pull air from the corners of the room, this air purifier is silent at work.

Thanks to QuietKEAP Technology that reduces noise, Core 300 on sleep mode is not detectable. In other words, you can sleep like a baby when turning the sleep mode on.

Levoit Core 300 is light and mobile, which means that you can quickly move it from one room to another and, in such a way, keep the air filtered in a whole house.

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Levoit Core 300 Specifications

Below is a complete list of important specifications and features included on the Levoit Core 300 Air Purifier:

Manufacturer Levoit
Model Core 300
Dimensions 8.7 x 8.7 x 14.2 inches
Filters Pre-filter, True HEPA filter and Activated Carbon filter
Filter Longevity 6-8 months
Coverage 219 sq. ft.
CADR Smoke 141 / Dust 140 / Pollen 145
Power Consumption 45W
Warranty 1 year (+1 year additionally)
User manual PDF

Levoit Core 300 Design

Levoit won an iF Design Award with this model. White color with gray details and an amazing touch panel on the top are what fit most rooms. With such a simple yet modern design, Levoit easily took the praise for their latest product. But it is not all in looks. High-quality plastic guarantees durability. Everything is sealed correctly, and plastic is BPA Free

Levoit Core 300 Filter Replace - 1.psd
Levoit Core 300 Placed on the Desk

The Levoit Core 300 is small and very easy to use. You can place it on a table, but at the same time, it is big enough to be placed on the ground or any other place. It is made in a perfect size that fits everywhere.

Core 300 can fit any room thanks to a neutral design with neutral colors. Because this is not a large device, it can be completely invisible in the room if you blend it perfectly into the environment.

Levoit logo is not large like we used to see it on other products and is definitely not standing out. It is placed perfectly, and the dark gray color just makes it visible, but at the same time, it blends perfectly. Air is pulled through the pre-filter, True HEPA filter, and an activated carbon filter, all around the air purifier. This large entry space allows the Levoit Core 300 air purifier to be very efficient.

The power cord cable is large enough, and you won’t need an extension.

Touch Buttons

The touch panel is well designed. It is sensitive enough and easy to use. The only problem is that there are no advanced functions that we may find in other models. Also, a bit annoying is that there is no beep or any other sound when you press a button, and you may not be sure if you actually press a button or no. 

Levoit Core 300 - Touch Buttons
Levoit Core 300 – Touch Buttons

Everything can be controlled with a touch panel. As soon as you attach it to electricity, all buttons will light up as a sign that the Core 300 now has power.

The on/Off button is used to turn the device on or off.

The fan speed button allows you to choose one of three speeds. Cycle through a low, medium, and high speed.

The sleep mode button will turn sleep-mode on, which will allow you to sleep uninterrupted by the air purifier. Not only the air purifier will start running at the lowest speed, but it will also reduce the brightness of touch boutons. In other words, less light will be emitted, and your sleep won’t be interrupted by it.

However, if the brightness is still too high for you to fall asleep, there is a display off button which will completely turn all lights off. 

When using the display lock button, only the power button and display light button will work. Turning off child lock mode is done by holding the child lock button for 3 seconds.

Timer button I have seen in many other air purifiers. It is, without a doubt, one of the most essential features.

A display lock is also a useful feature that will allow you to lock the touch panel. The only button that can be used is the power button when the display lock is on. If you want to unlock buttons, you need to hold the display lock button for 3 seconds. The filter indicator will let you know when is the time to change air filters.

Size and Dimensions

The Levoit Core 300 is lightweight (7.5 lb), as already mentioned, and that allows this air purifier to be mobile. The plastic used in production is not slippery, and you will have a good grip when moving it.

Thanks to the small size (8.7 x 8.7 x 14.2 inches), it can easily be placed on a table, nightstand, working table, desktop, or anywhere else in the house.

Accessories and Parts

When you buy Levoit Core 300, you should get one air purifier with one True HEPA three-stage original filter, which will be pre-installed. User manual to read all you should do to start successfully as well as a quick start guide if the user manual is too long to read.

Levoit Core 300 Video Review

Finally, I have found a decent air purifier that does a job and even more. Check out all the details about Levoit Core 300 in the video. See all the tests I did and how well the Core 300 did in a room larger than recommended. Also, carefully check noise tests because if you are a light sleeper, maybe this air purifier is the best thing you can buy. In case you have any questions, ask us by commenting on the video below

Review of Levoit Core 300 Features


The already mentioned engine that pulls air is much better in Core 300 than in the LV-H132 model, which makes Core 300 a worthy successor.

Together with VortexAir Technology, Core 300 air purifier creates strong airflow. AHAM certified CADR (Clean Air Delivery Rate) number is 230+ms/h. All of this allows this air purifier to be extremely useful in a room as large as 219 sq. ft. 

Levoit Core 300 Air Purifier Features
Levoit Core 300 – Air Purifier

The engine is durable and will work for ages thanks to the AC capacitor motor, which uses durable high precision bearing, which with excellent internal structure, increases abrasion resistance. In return, you get an engine with extended life.

Silent And Ideal For Sleep

Silent work is what makes Levoit Core 300 to stand out in the pack. Thanks to QuietKEAP technology, this air purifier can work while you sleep. Additionally, if needed, the display light can be shut down completely, allowing you to sleep in the complete dark. 

Ideal for Large Room

Levoit Core 300 is certified for a room that is no larger than 219 sq. ft. In such a room air purifier can filter all air five times in one hour. Thanks to the three-stage filtration system and three fan speeds, this air purifier can remove 99,97% of airborne particles. 

Core 300 has memory and will remember last used settings before shutting down. This memory allows it to use the same settings on the next run.

Smart Change Filter Indicator

The indicator will let you know when filters need to be replaced. No need to mess with a filter before the light goes on. This indicator will help you get the maximum from the filter.


Levoit is a company with a good reputation, and because of that, the Core 300 has many certificates that prove the quality of work.

The most important certificate without a doubt is CARB, which means that this model is allowed to be used in California. We know that California has strict laws, and Levoit Core 300 has passed all of them.

Other than CARB, I need to mention the Energy Star certificate, which guarantees that Levoit Core 300 will use as little energy as possible and, in return, help the planet earth as well as your budget in the long run.


Levoit generously gives a one-year warranty on this product. However, if you wish to get an additional one-year warranty, you can do that by registering on http://levoit.com/bonus. Make sure you register in 14 days since buying the product. If you do that you will have a full two-year warranty.

GermGuardian AC4825 Air Purifier Blueair Blue Pure 411 Air Purifier Levoit LV-H132 Air Purifier Related reviews

Room Coverage

The Core 300 is intended for rooms up to 219 sq. ft. It will exchange the air in the room that big for up to 5 times in one hour.

The clean air delivery rate (CADR) for the Levoit Core 300 is 141 for smoke, 140 for dust, and 145 for pollen. CADR is measured in CFM that stands for cubic ft. per minute.

There are many factors that you have to consider when deciding where you should use this device, primarily the room size. It is best to use it in rooms up to 219 sq. ft. You can use it in the slightly bigger rooms, in which case you are going to use the third speed far more than usual.

Levoit Core 300 Filters

Levoit Core 300 uses different types of air filters. However, the original filter is in the initial package. All other filters can be bought separately. You’ll have to replace the filters once the filter indicator turns on. Keep in mind that it’s not wise to wash the HEPA filter because it might create mold. The HEPA filter and carbon filter are replaceable, and you should replace them from 6 to 8 months in this case.

Levoit Core 300 - Air Purifier and Filter

You should never experiment with filters and use essential oils. This kind of experiment may be dangerous to your health as well as your property.

All filter packages have a nylon mesh pre-filter that does a great job at catching large particles and, in such a way, prolonging the life of the primary HEPA filter. Let’s see which filter is good for what.

Levoit Core 300 Original Filter

Levoit Core 300 Replacement Filter

I have personally tested the Original filter, and this type of filter is more than enough to any decent home needs. In my tests, this filter proved extremely beneficial.

Always buy genuine filters for the best performance. As soon as the filter reset indicator is on, you are ready to change filters. Do it as quickly as possible.

View Filter Price On Amazon

For a longer lifespan of HEPA and activated carbon filters, clean the pre-filter every 2–4 weeks. I have started to clean the pre-filter more often after I noticed the air purifier works better after the cleaning.

Original Filter

Just like the name says, this original filter will come with the air purifier. This filter is good at removing airborne particles as well as removing bad odor. It is very useful against allergens, dust, and not heavy odors. The original filter combines a pre-filter, a True HEPA filter, and an activated carbon filter.

Pet Allergy Filter 

This advanced filter has all that the Original filter has plus an additional high efficiency activated carbon filter, which helps at removing strong odors. It is very effective against pet allergies, strong odors like pet litter, cooking smell, or toilet odor.

Toxin Absorber Filter

Just like the Pet Allergy filter, this one also has all the benefits of the Original filter, but it also has an even stronger high efficiency activated carbon filter. The powerful carbon filter is beneficial against strong odors, smoke, cigarette smoke, toxic fumes, VOCs, vehicle exhaust, and other toxic air pollution. 

Mold Bacteria Filter

Mold Bacteria filter is focused more on organic pollution. It has all benefits of the Original filter plus an additional antibacterial filter that eliminates germs, as well as prevents the growth of bacteria and mold inside air purifiers.

If the Original filter is not good enough because you have a person that continuously smokes in a room, or maybe you have pets, then I suggest checking and get an additional filter dedicated to your needs.

Filter Replacement

The 3-in-1 filter needs replacement every 6 to 8 months. However, if you notice a weird noise coming from an air purifier, low airflow, clogging, or if the air purifier is not purifying air as before, then you should also look for a new filter.

Levoit Core 300 - Filter Replacement
Levoit Core 300 – Filter Replacement

Every two to four weeks, you need to clean the pre-filter to prolong the life of the primary filter.

How to Replace Levoit Core 300 Filter?

If you are not pretty sure how to change your filter please follow the steps I listed above. It will take just 5 mins and your filter will be changed properly.

Total Time: 5 minutes

Taking out the old filter

Unplug air purifier. Remove filter cover and take out the old filter.

Unplug air purifier. Remove filter cover and take out the old filter.

Vacuuming and cleaning inside

Wipe the inside of the air purifier of all dirt and dust. You can use a dry cloth or even vacuum cleaner to do that.

Vacuuming and cleaning inside the Levoit Core 300

Placing the new filter inside

Unpack a new filter (Core 300-RF) and place it inside the air purifier.

Placing the new filter inside the Levoit Core 300

Closing the filter cover

Put the cover back and close the filter door.

Closing the filter cover

Resetting check filter indicator

Turn the air purifier on, press and hold Check Filter Indicator for 3 seconds.

Resetting check filter indicator

Levoit Core 300 – Filter Before and After

I have conducted many tests over the Levoit Core 300 and used it for quite some time. Are you intrigued by how does the filter look before and after several-month usage? When I was alarmed by its filter replacement indicator that I should change the filter, I opened its cover and took a picture of the used filter that can be seen in the image below.

Levoit Core 300 Air Purifier Filter - Before and After
Levoit Core 300 – Filter Before and After

Levoit Core 300 made remarkable results on our performance tests, now we confirmed it really does its job, and a filthy filter is an evident indicator.

It absorbed various air pollutants like household dust, pet hair, smoke from the fireplace, and many other.

Noise Test

As always, I have tested noise levels on this model as well. I use a unique noise measurement tool that uses a dBA scale. This means that my results may be different than the original ones done by the manufacturer. This air purifier has three speeds, actually four if we count sleep mode as well.

Sleep mode runs on the lowest fan speed, which is lower than the first fan speed, and because of that, sleep mode on Core 300 is very useful and extremely quiet at work. Even if you can’t sleep with noise by placing this air purifier on sleep mode, you will sleep with no trouble. All thanks go to QuietKEAP Technology, which drastically reduces noise. Check noise results in the table below.

The maximum noise level is around 64.9 dBA, which is, in my opinion, a bit loud if you plan to use it in the bedroom or any other quiet room.

Speed Value (dBA)
Speed 1 46.4 dBA
Speed 2 52.9 dBA
Speed 3 64.9 dBA
Sleep mode 40.7 dBA

Performance Tests

I also performed various performance tests in different room sizes. I used real-life testing, and no laboratory tests were done. In all tests, I used the Levoit Core 300 at its highest, third speed.

This small air purifier has excellent performance, and on the third speed, airflow is impressive, which personally surprised me.

Levoit Core 300 - Performance Test
Levoit Core 300 – Performance Test

194 Square Feet Room Test

This room is smaller than the recommended room size of 219 sq. ft., and because of that, the air purifier did an amazing job. Since the engine is also powerful in Core 300, the results did not surprise me at all.

In only one hour, AQI was reduced from 111 to 8. Air quality improved by 93%. In an additional 30 minutes, AQI was additionally reduced to 6.

# Starting Baseline After 60min
PM 2.5 83.8 5.8
PM 10 117.4 8.1
Particles 121651 8419
AQI 111 8

320 Square Feet Room Test

This room is a bit larger than the recommended size. However, even in such a large room as well as much larger than the recommended one, Core 300 did an excellent job.

It improved air quality by 92% in only one hour. It reduced AQI from 145 to 12.

With Core 300, you will be extremely satisfied when you find out that it is efficiently purifying the air in a room larger than recommended.

With such great results, even in a bit larger room than recommended, it makes me say that this is definitely one of the best buy air purifiers on the market.

# Starting Baseline After 60min
PM 2.5 111.1 8.8
PM 10 155.5 12.3
Particles 161125 12813
AQI 145 12

Operating Costs

As already mentioned under the certificates section, Levoit Core 300 is Energy Star certified, which means it uses very little energy to work. The maximum power that can be used by the Levoit Core 300 is 45W.

If you use it at maximum speed for 24h every day for a whole month, you will only spend 3.8$ if the energy price is 0.12$/kWh. While on standby, Core 300 is not using energy. Levoit says it will use less than 0.8W, by my test that is 0.2W.

Levoit Core 300 - Power Engine
Levoit Core 300 – Power Engine

However, operating costs will be high in a month when you will need to replace the filter. Also, buying additional filters to filter specific pollution will be an additional cost.

Speed Power Usage (W)
Speed 1 29.4W
Speed 2 31.4W
Speed 3 43.5W
Stand-by 0.8W

Pros and Cons

To revise, here are the advantages and disadvantages of Core 300:


  • Sleep Mode Additionally Reduces Engine Speed
  • Premium Material
  • Additional Filters
  • iF Design Award
  • Luxury Touch
  • High Air Flow
  • True HEPA Filter
  • Decent in Rooms Larger Than 219 sq. ft.
  • Energy Star Certified
  • CARB Compliant
  • 100% Ozone Free


  • No Air Quality Sensor and No Auto Mode
  • No Sound When Pressing Buttons
  • No Light Light


😇 Should I sleep with Core 300 turned on?

It’s safe to sleep with the Core 300 air purifier turned off. Your sleeping will be more pleasant with the sleep mode, which will reduce the noise level of Core 300, so it won’t disturb you.

😀 Does Levoit Core 300 produce ozone?

No, it doesn’t. Levoit doesn’t have an ionizer or any other type of filtration which produces ozone.

😁 Which HEPA filter does the Core 300 uses?

It uses the True HEPA filter, which will trap 99.97% of airborne particles from the air.

😎 How long does it take for Core 300 to clean a room?

It depends on room size. This model is capable of changing air up to 5 times in one hour in a room that is 219 sq. ft. large.

😅 Where should you place this Levoit air purifier?

The best thing you can do is to test a few different spots in your room. Keep your air purifier away from wet or damp areas. Also, place it at a distance of 15 inches from other objects.

🤩 How long does the Core 300 filter last?

The filter usually lasts between 6 and 8 months. That period highly depends on your use of the air purifier, but please don’t forget to remove the plastic bag from the air filter before the first usage.

FInal Thoughts

Levoit Core 300 is, without doubt, one of the best buy air purifiers in the price range. It is popular because of its small size and great power. High air flow allows this air purifier to purify the air in a room larger than recommended, and everyone would love to have that kind of air purifier.

However, I think that the lack of advanced options and sensors to allow auto mode may turn down customers that look for fancy air purifiers. But if you need a robust air purifier that will do the job, Levoit Core 300 is the best you can get.



Review Breakdown





Operating cost


Value for money


Ease of use


Update Log

September 8, 2021 – I improved the filter section with a new image and added a new section that shows the Core 300 filter before and after.

May 15, 2021 – I updated typos and added the OG meta image for easier sharing on social media.

October 22, 2020 – I updated the article by adding an FAQ section, extending the specifications table, improving the replacing filter explanation, and adding new images.

April 8, 2020 – Levoit Core 300 Video Review – Embed from Air Purifier First YT Channel.


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