Levoit’s Core line of air purifiers has several models with minor differences and many similarities. Below we’ll compare the Levoit Core 300S vs 400S, covering what the key differences are as well as how the air purifiers are similar.
Levoit Core series air purifiers receive very high ratings from consumers. The Core 300S and Core 400S both have a 4.7 star average rating on Amazon with thousands of reviews. if you’re choosing between the two, it’s fairly easy to decide which is best. You just need to know what the key differences are.
Levoit Core 300S
Levoit Core 400S
How is the Levoit Core 300S different than the Core 400S?
The most significant difference between the Levoit Core 300S and Levoit Core 400S is that the Core 400S is designed for larger rooms. With this capability comes some tradeoffs. The Core 400S is also bigger, heavier, more energy hungry and slightly louder than the than the 300S.
Room Size and CADR
The big story when it comes to the difference between the 300S and 400S is the size of the room they are designed for: The Core 300S is designed for smaller rooms than the 400S.
- Core 300S (Levoit): 219 sq. ft.
- Core 400S (Levoit): 403 sq. ft.
By Levoit’s numbers, the 400S has an effective range of almost double that of the 300S. This really is the most important distinction between the two air purifiers. In their testing and calculations, EnergyStar recommended the 300S for rooms up to 175 sq. ft. and the 400S for up to 378 sq. ft.
As you’d expect, with a different motor, filter and chassis, CADR numbers also vary between the units (see the specifications table below).
Tip: If you’re at the top of the range for room size with the Core 300S, consider going with the 400S.
Power Consumption
Levoit rates the Core 400S’ motor at 38W compared to the 300S at 26W. While those numbers seem small, it represents a 46% difference from model to model.
Where power is concerned the rated power of the Core 300S model is 26W, significantly less than the Core 300 model at 45W. EnergyStar says that would add up to an estimated annual energy use of 139 kWh/year for the 300S and 234 kWh/year for the 400S.
Noise Levels
Both models have a low 24dB starting point for generated noise. When pushed to their highest fan setting, the 400S is ever so slightly louder at 52dB, just 2dB higher than the 300S. It’s so minute we almost didn’t include it, but it is a difference.
Size
The Core 400S was designed to serve a larger area. To treat more air, Levoit equipped it with a larger filter to do so. This explains it’s larger overall size and weight.
The 400S has a 10.8″ diameter, is 20.5″ tall and weights in at 14.1 lbs. The more compact Core 300S has an 8.7″ diameter, 14.2″ height and weights significantly less at 6.95 lbs.
Price
Purchasing the Core 400S will set you back around 50% more than the Core 300S.
Levoit Core 300S vs 400S
Shared Features and Specifications
There’s a long list of shared features between these two air purifiers.
Filters
Both air purifiers come with a 3-stage filter which includes a pre-filter, HEPA filter and VOC filter in one cylindrical unit. VOC filtration comes by way of actual chunks of carbon which are suspended on the inside of the filter.
The shared type and level of filtration means both Levoit air purifiers can handle bacteria, dust, mites, mold, pet dander, pollen, smoke and odors.
Features
There’s several smart air purifier technologies that both air purifiers share. Most notable is the Automatic mode. When set to Auto mode the air purifiers monitor the current condition of the air and adjust airflow accordingly.
This is one of those features that every air purifier (and home) could benefit from as it limits the amount of electricity being consumed to what the current conditions require.
When we compared the Core 300 and Core 300S, lack Automatic mode was a big difference; only the ‘S’ designated models have the capability.
Some shared features:
- 3-Stage Filtration (Pre-Filter, HEPA Filter, Carbon Filter)
- Voice Control (Amazon Alexa, Google Assistant)
- Remote Control and Monitoring (VeSync App)
- Automatic Mode
- Timer
- Display Lock
- Display Off mode
- Filter Life Indicator
- Sleep Mode
- Color Band Air Quality Indicator
- Numerical Air Quality Indicator
- Ozone-free
- EnergyStar Certified
PM2.5 Air Quality Sensor
When we mentioned Automatic mode earlier we never said how the air purifier could tell what the current air quality level is at any point in time. That’s where the PM2.5 air quality sensor comes in.
This sensor, found in both the 300S and 400S, measures airborne particles as they pass in front of it. Based on what the PM2.5 sensor’s reading is, a small computer adjusts fan speed.
On the top of each air purifier a colored ring and number serve as easy-to-read and understand air quality indicators. The colored ring has four colors: Blue, Green, Orange and Red. Blue means the air is Very Good, Green is Good, Orange indicates Moderate air quality and Red is Bad.
| Indicator Color | Air Quality | Fan (Auto) | PM2.5 Range |
|---|---|---|---|
| Blue | Very Good | Sleep Mode | 0-35 ug/m3 |
| Green | Good | Low | 36-75 ug/m3 |
| Orange | Moderate | Medium | 76-115 ug/m3 |
| Red | Bad | High | > 115 ug/m3 |
Numerically, the higher the number shown the worse the quality of the air.
Current air quality levels can also be seen in the VeSync app.
Levoit Core 300S
Levoit Core 400S
Which Levoit Air Purifier is Best?
The features these air purifiers share is the same. So, choosing between the Levoit Core 300S and Core 400S isn’t so much which one is best, it’s more about which is the right fit for your home, meaning room size.
Review the maximum area each is effective in treating in the table below, then choose the air purifier which makes the most sense.
Tip: Both air purifiers are easily moved. Consider if you may want an air purifier for a larger space temporarily when choosing which to buy. There’s no harm in running an air purifier designed for a larger space in a smaller one.
Levoit Core 300S vs Core 400S: Specs
| Levoit Core 300S | Levoit Core 400S | |
|---|---|---|
| Type | Smart Air Purifier | Smart Air Purifier |
| Pre-filter | Yes | Yes |
| HEPA filter | Yes | Yes |
| Activated Carbon Filter | Yes | Yes |
| UV Filter | No | No |
| Ozone Emmission | None | None |
| Fan Speeds | 3 | 3 |
| PM2.5 Particle Sensor | Yes | Yes |
| Automatic Mode | Yes | Yes |
| Smart Features | Yes | Yes |
| Room Size (Levoit) | 219 sq.ft. | 403 sq.ft. |
| Room Size * | 175 sq.ft. | 378 sq.ft. |
| Dust-Free CADR * | 129 CFM | 247 CFM |
| Smoke-Free CADR * | 113 CFM | 244 CFM |
| Pollen-Free CADR * | 134 CFM | 269 CFM |
| Dimensions | 8.7″ x 8.7″ x 14.2″ | 10.8″ x 10.8″ x 20.5″ |
| Weight | 6.95 lbs. | 14.12 lbs. |
| Certifications | CARB, EnergyStar, ETL, FCC | CARB, EnergyStar, ETL, FCC |
| Where to Buy | Amazon | Amazon |
Frequently Asked Questions: Levoit Core 300S vs. 400S: Key Differences & Comparison
What is the main difference between the Levoit Core 300S and Core 400S air purifiers?
The main difference is the room size capacity. The Core 400S is designed for significantly larger rooms (rated for up to 403 sq. ft. by Levoit) compared to the Core 300S (rated for up to 219 sq. ft. by Levoit). Because of this, the Core 400S is also larger, heavier, has higher power consumption, and is slightly louder at its highest fan setting.
Which Levoit air purifier should I buy: the Core 300S for small rooms or the Core 400S for large rooms?
You should choose the model that best matches your typical room size.
The Core 400S is best for large rooms or open-concept areas (up to around 403 sq. ft.). If your room size is at the very top of the 300S’s range, it’s a good “tip” to choose the more powerful 400S for better air cleaning performance.
The Core 300S is ideal for small to medium rooms like bedrooms, offices, or small living areas (up to around 219 sq. ft.).
How do the Levoit Core 300S and 400S compare in terms of size and weight?
The Core 400S is noticeably larger and heavier than the 300S.
Core 400S: Approximately 10.8″ diameter x 20.5″ tall, weighing about 14.1 lbs.
Core 300S: Approximately 8.7″ diameter x 14.2″ tall, weighing about 6.95 lbs.
Does the Core 400S use a lot more electricity than the Core 300S?
Yes, the Core 400S is rated at 38W, which is a 46% increase over the Core 300S‘s 26W motor. EnergyStar estimates the Core 400S uses about 234 kWh/year, compared to 139 kWh/year for the 300S.
Do both the Levoit Core 300S and Core 400S have smart features like Auto Mode and app control?
Yes, they do. Both models are “S” designated, meaning they are smart air purifiers. They share a long list of smart features, including:
A PM2.5 air quality sensor to provide a real-time reading and trigger the Auto Mode.
Automatic Mode (which adjusts airflow based on the air quality sensor reading).
VeSync App remote control and monitoring.
Voice Control compatibility (Amazon Alexa, Google Assistant).
Are the filters the same in the Levoit Core 300S and Core 400S?
They both use the same type of filtration: a 3-stage cylindrical filter which includes a pre-filter, a True HEPA filter, and a VOC (Volatile Organic Compound) filter with activated carbon chunks. However, the filter for the Core 400S is physically larger to accommodate the greater air cleaning capacity of the unit.
Which Levoit Core model is quieter, the 300S or the 400S?
Both air purifiers are very quiet, with a low starting point of 24dB. The Core 300S is slightly quieter at its maximum setting (50dB) compared to the Core 400S (52dB). This difference is minute but exists due to the more powerful motor in the 400S.
