Levoit PlasmaPro 400S vs 600S

In this Levoit PlasmaPro 400S vs 600S review, we will compare the mid-level and high-end device of the PlasmaPro series from the fast-growing American brand for small home appliances.

Both draw in air from all sides and then release purified air through the top. Both are at the upper end when it comes to performance metrics, and are equipped with all the features and capabilites expected of a modern air purifier. So which version is the best fit for your needs?

This side-by-side comparison will help you find out.

Comparison: Levoit PlasmaPro 400S vs 600S – What are the Differences?

Coverage Area & Efficiency

Levoit recommends the PlasmaPro 400S for middle-sized rooms with a surface area of up to 37 m² (403 ft²), while the PlasmaPro 600S with its higher effective range is able to purify an area of up to 59 m² (635 ft²).

In both instances, the recommended room size is based on an assumed five air changes per hour (ACH) in a room with a ceiling height of 2.4 m (8 ft). Thus, the two purifiers could be used in even bigger rooms, with the amount of ACH decreasing accordingly.

Clean Air Delivery Rate

The filtration process of the PlasmaPro series kicks off with a pre-filter that takes care of large pollutants including dust, hair, and pet fur. Next, an H13 True HEPA filter captures at least 99.97% of particles and allergens as small as 0.3 µm, for example, pollen and pet dander.

In step three, smoke, fumes, VOCs, and household odors such as cooking smells and pet odors are neutralized by a layer of activated carbon. Lastly, positive and negative ions are released to bind with pollutants and break down their molecular structure.

The PlasmaPro 400s goes through the filtration process at a rate of 442 m³/h (260 CFM). Meanwhile, the PlasmaPro 600S achieves a Clean Air Delivery Rate (CADR) as high as 697 m³/h (410 CFM), tying it with the Core 600S for the highest CADR of all Levoit air purifiers.

Working Noise

When set to sleep mode, the PlasmaPro 400S operates at a noise level as low as 24 decibels (dB) as opposed to 26 dB for its successor. It does also have the advantage on the upper end, where it maxes out at 52 dB compared to 55 dB for the PlasmaPro 600S.

Both models can be switched to auto mode, in which they will automatically adjust their fan speed based on air quality. As soon as the amount of harmful particles starts to decrease again after a sudden spike, their fan speed and noise level will decrease accordingly.

Sensors & Display

To generate the real-time data needed for the auto mode, both the PlasmaPro 400S and 600S are equipped with Levoit’s AirSight Plus technology. Using a high-sensitivity laser dust sensor, they are able to continuously scan the surrounding air for pollutants.

An indicator ring located on top of the two devices reveals the current air quality at a quick glance, with blue signifying very good and red being unhealthy. The level of PM 2.5 is also visible on the display. All the information is available via the VeSync app, as well (see below).

Connectivity & Compatibility

You can use a Wi-Fi connection, your smartphone, and the VeSync app to monitor and control both the PlasmaPro 400S and 600S remotely. This allows you to turn the purifier on and off, change the speed, create a schedule, view the remaining filter life, and more.

In addition, it is also possible to interact with the models from the PlasmaPro series using only your voice. Thanks to their compatibility with Amazon Alexa and Google Assistant, they can be seemingly integrated with your smart home.

Weight & Dimensions

In the final round of this Levoit PlasmaPro 400S vs 600S comparison, we will have a quick look at the weight and dimensions of the two devices. With a weight of 5.0 kg (11 lb), base diameter of 274 mm (10.8 in), and height of 520 mm (20.5 in), the 400S is both lighter and smaller.

Conclusion: Levoit PlasmaPro 400S vs 600S – Which is the Better Air Purifier?

It should come as no surprise that the Levoit Air Purifier PlasmaPro 400S could not entirely match the performance metrics of its successor. That said, it is still powerful enough for most use cases and ships with the same advanced features and capabilities as the high-end model.

If you want the most powerful device of the PlasmaPro series, opt for the Levoit Air Purifier PlasmaPro 600S. In fact, there is no other Levoit purifier with a higher CADR, while it is also tied for second among all the brand’s models when it comes to maximum coverage area.

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