Levoit Core 300 Review

Levoit burst onto the air purifier scene in 2017. Up until that point, there had not been any major changes in the world of air purifiers, and many units looked very similar to those of five years or more ago. Levoit changed everything with its wide range of air purifiers.

Their business is based in the USA, and they manufacture their units in China. Their parent company is Vesync Co Ltd, a publicly-traded smart appliance company that employs over 1,200 people and is listed on the Hong Kong stock exchange. 

Levoit is constantly innovating, developing new technologies, and incorporating newer smart tech features into its ‘S’ line of units. That’s how Levoit brought the power of modern economies of scale to create home appliances that perform better for less.

The Levoit Core 300 was first introduced in the United States in late 2019, and it grew to become a major bestseller at the start of the COVID-19 pandemic. 

It’s no secret why, considering that the Core 300 boasts a high CADR rating and activated carbon filters but costs less than $100. 

Why You Can Trust This Review As consumers, we constantly research CADR rankings and other performance metrics published by the manufacturers, but we don’t like to leave it at that. Our goal is to help you clearly understand which air purifiers are great and, more importantly, uncover which ones you should avoid. We know we couldn’t do that without buying each air purifier with our own money and testing them in our own house. Here’s how we tested the Levoit Core 300 before writing this review: 1️⃣ I filled our 705 cubit ft test room with thick incense smoke so I could use an air quality monitor to track how long it took the Core 300 to clean the air. 2️⃣ I then used an electricity usage monitor to record how much energy (in watts) the Core 300 consumes when running at the highest and lowest speeds. 3️⃣ The last step was to record noise levels in decibels when running the Core 300 with the help of a sound level monitor. All this to say that I didn’t rely on Levoit’s marketing materials when writing this review. Instead, I dug deep and tested the performance of the Core 300 in real life. This way, I can compare this unit against other similar air purifiers when writing this review, and it is a fair comparison as all units have been tested under the same conditions.

Okay, then, with that out of the way, let me tell you about the Levoit Core 300.

TL;DR The Low Down on the Core 300

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“The Core 300 is a hard unit to beat when it comes to value for money.”

— Danny Ashton, Founder & Senior Writer

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If you don’t fancy spending the next 10 minutes reading about this air purifier, then don’t worry; I’ve got you covered with my pros and cons for the Levoit Core 300.

What We Really Like:

👍 It’s less than $100 and has a CADR of 140CFM for Dust, 145CFM for Pollen and 141CFM for smoke – with previous generations of air purifiers, you needed to spend upwards of $250 to get this level of performance
👍 It looks pretty good and doesn’t take up so much space due to its cylindrical design. 
👍 Sleep mode allows it to run at near silent with all lights off (see video below for sound examples)
👍 Filters contain both H13 HEPA and activated charcoal and are easily available via Amazon
👍 Timer mode so you can leave it on for 2, 4, 6 and 8 hours, and it will automatically switch off

What We Think Could Be Better:

👎 It lacks an onboard air sensor, so it can’t automatically switch on if it detects allergens
👎 It doesn’t include wifi capability or an app (which might be seen as a plus for some people)
👎 Would be great if you could remove the pre-filter for cleaning

The Specifications

145 CFM for less than $100 is why the Levoit Core 300 became the biggest-selling air purifier of the last few years. It makes a lot of sense for so many different consumers.

HouseFresh Rating:	★★★★★
Time to clean our test room:	40 Minutes
Air purifier technology:	H13 (Medical) Grade HEPA and Activated Charcoal
Recommended room size:	219 ft² to 547 ft²
Clean air delivery rate (CADR):	145 CFM (246 m3/h)
Dimensions (in inches / in cm):	8.7L x 8.7W x 14.2H inches (22L x 22W x 36H cm)
Weight (in pounds / in kg):	8.6 lbs (3.9 kg)
Noise level (low – high):	24dB – 50dB
Filter life:	6 – 8 months
Manufacturer’s warranty	2 years
Estimated energy consumption:	$47.30

Small in Size, Big on Power

I expected the Levoit Core 300 to be much smaller based on the pictures I saw online, but it’s still a small device compared to other air purifiers I have tested. 

The cylindrical design allows for a fairly small floor footprint, so I could use it in most rooms without needing to move furniture around.

The simple menu system is something that Levoit does well, and the 300 is a great example — options for speed, timers, sleep, and lighting are all buttons on the slick touchscreen menu.

There is also a warning for when the filter needs replacing, which I’m hoping is closer to eight months than six, but I’ll provide an update as soon as I see the warning light.

The Levoit Core 300 is one of the first powerful air purifiers for under $100. Since its release, many other manufacturers have come out with their version of the Core 300, including:

• Medify 25: This unit has similar performance but is often much higher in cost
• Blueair Pure Air 411: With a lower CADR rating (120 CFM versus 145 for the Core 300) and often at a higher cost 

Years after its release, the Levoit Core 300 is still the leading contender for best budget air purifier available in the United States.

All-round Filtration with no Byproducts

The Levoit Core 300 has a filter that combines a HEPA-grade H13 filter with activated carbon pellets. The HEPA will do a great job of removing everything from pollen to viruses, and the activated carbon works great for odor and chemical removal. 

The combined filter does mean that you are forced to invest in both filter types. It would be good to see filter renewal options that use 100% HEPA or Activated Carbon so you can use the Core 300 for specific jobs such as particulate pollutants.

Removing the filter from the unit is fairly easy, and it can be done in three simple steps:

I appreciate how the Core 300 uses HEPA and Activated Carbon, and I can know 100% that this will not produce any potentially harmful byproducts like ozone.

These days, many air purifiers come with ‘innovative’ air purification technology that doesn’t make a difference during our performance tests. 

Regardless of all the scientific-sounding taglines, it would help if you remembered that the trustworthy HEPA + Activated Carbon combo had been put to the test generation upon generation. 

The first documented use of activated charcoal goes as far back as 3750 B.C., and HEPA technology was invented during WW2. 

Most fancy-sounding air purification technology is yet to be proven by peer-reviewed studies. Still, you will find thousands of papers on the positive effects of HEPA and Activated Carbon being published by academics from around the world. 

One thing we always mention in our reviews is to remember to remove the filter from the plastic bag it comes in. Many HEPA filters are kept in plastic containers to ensure they won’t be used before they arrive with the customer.  Dyson has started adding noticeable warnings on their plastic bags and I wish more manufacturers would follow suit, clarifying that plastic needs to be removed before putting the filter in the air purifier.

Simple Controls Make it Easy to Use

Simplicity is built into the controls of the Levoit Core 300.

This display is undoubtedly more complex than the simple ‘one button’ control panel of the Blueair range or the dial approach taken by the Smart Air Health S. Personally, I like that it has clear buttons meant to be used for each of the different modes. 

I have used the timers several times, which I rarely do with devices, as the options are usually tucked away inside a sub-menu.

The Levoit Core 300 Cleared Our Room in 40 Minutes

The Levoit Core 300 removed all pollutants in our test room (sized 705 cubic ft) in 40 minutes. 

This unit compares favorably with the more expensive Medify MA-25, which managed 43 minutes and was far better than the Dyson HP04, which had multiple extra features but was close to $800.

Air Cleaning Performance Test Results

When comparing cleaning performance against price, it’s hard to fault the Levoit Core 300. What we saw during testing makes it hard to recommend the upgraded but more expensive Levoit Core 300S, which shaved off just one minute compared to the Core 300.

Noise Levels Test Results

When it comes to noise levels, the Core 300 performed well.

We know that sound can be super subjective, so we produced a video of the different speed models so you can hear for yourself:

The Cost to Run a Levoit Core 300: $157.74 Per Year

1. Electricity costs = $47.30

With the energy crisis in full surge across the United States and the world, it’s important to consider the costs of devices like air purifiers, as it’s often not given the importance that it should.

The standard Levoit Core 300 pulls 45 watts at maximum power, which equates to $47.30 per year but don’t worry too much, as our calculation is based on 100% usage, which is unlikely to be the case.

That being said, electricity consumption is still something to consider when considering the costs of running an air purifier in the long run. This might be one big reason why you might want to look at the upgraded 300S, as it was able to perform at its highest setting with just 26 watts, which is a significant reduction for the same amount of cleaning power.

2. Filter costs = $60

Filter costs are another area that most people miss when thinking about air purifiers.  HEPA and activated charcoal filters work by becoming full of pollutants over time and so need regular replacing if you want to sustain cleaning performance. 

Genuine Levoit filters cost $29.99, so owning a Core 300 could cost an additional $60 per year, considering you need to replace the filters every 6 months. 

After long-term testing of the Levoit Core 300, we saw the red light at 9 months. This was one extra month on top of the 6-8 month mark advertised by the manufacturer.

For a replacement, I went with a Levoit Core 300-RF-PA aimed at those looking to remove odors. In my particular case, we have used the Core 300 mainly in our bedroom and kitchen, so removing smells was a must. 

Due to stock issues, I couldn’t find this filter for less than $30, which is quite a big chunk of the unit’s total price — something to consider when annual filter costs are close to the full RRP for the unit. 

But also, I did see several generic filters at $30 for 2 filters ($15 each!), which may perform as well, but I’ll be looking to test this in a future review.

Comparing The Levoit 300 Against The Levoit 300S

Since the Core 300, Levoit has released the upgraded Core 300S incorporating an air sensor and smart features. 

When you look at both units side by side, there is no way you can quickly pinpoint which one is which.

The Levoit Core 300S includes app support AND auto mode, but you need to be mindful as these extra features add more than $50 to the price tag.

📱 The Core 300 has no innovative features, so if you want to control your air purifier remotely using your phone, you will need to upgrade to the Core 300S. 

🍃 Regarding air cleaning capabilities, the Core 300 and the Core 300S share the same technology. However, the Core 300S shaved off one whole minute when cleaning the air in the testing room compared to the Core 300, which took 40 minutes.

⚡️ Long-term costs will be quite similar, although the Core 300S is more energy efficient, so if your electricity bill is a concern, you should go for the Core 300S.

Personally, I would suggest getting the Core 300S if you can afford the extra $50 upfront.

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Bottom Line

The Levoit Core 300 is an easy air purifier to like. 

It doesn’t overpromise and has a great CADR score, which matches the performance figures we saw in our tests. 

The Levoit 300 is not for everyone in the same way that not everyone wants to drive a VW Beetle, but if you need something to clean a room and don’t want to overpay, the Levoit 300 is the one unit I have no problem recommending year after year. If you’re looking for something cheaper, then you should read our review of the TaoTronics AP003.

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SOURCES

We used the Department of Energy’s appliance energy calculator to calculate yearly costs associated with running the Levoit Core 300 for 24hs a day for 365 days. We ran this calculation utilizing the US average utility rate of $0.12/kWh as of March 3rd, 2023.

Last update on 2023-03-31 / Affiliate links / Images from Amazon Product Advertising API