Levoit Core 300 vs Core 400S: do you need the bigger one?
Levoit Core 300 vs Core 400S on rated room size, price, size, weight and smart features, from Levoit's own comparison chart. Not a lab test.
Research guide based on published sources, not hands-on testing. Our methodology · How links work
The short answer
Go by room size. Levoit's comparison chart rates the Core 300 for 219 sq ft and the Core 400S for 403 sq ft. The 400S costs $219.99 against $99.99, and adds app control and a PM2.5 display. For a bedroom, the Core 300 is enough. For an open living area, the 400S is the one sized for it.

This comparison uses Levoit’s air purifier comparison chart and the Core 300 product page. We have not tested either purifier.
Spec snapshot
| Core 300 | Core 400S | |
|---|---|---|
| Ideal room size (Levoit chart) | 219 sq ft | 403 sq ft |
| MSRP | $99.99 | $219.99 |
| Size | 8.7 x 8.7 x 14.2 in | 10.8 x 10.8 x 20.5 in |
| Weight (Levoit chart) | 7.5 lb | 11 lb |
| App control | No | Yes, VeSync |
| PM2.5 display | No | Yes |
Levoit’s Core 300 product page gives a slightly different room figure (222 sq ft at 4.8 air changes an hour) and weight (7.9 lb). We use the chart here so both models are measured the same way.
When the Core 300 wins
Bedrooms and home offices. It costs less than half as much and takes up less floor space.
When the Core 400S wins
Rooms above about 220 sq ft, or when you want to check air quality and change settings from your phone.
Related
Tools for this decision: Appliance running cost calculator, Refill and filter cost calculator.
FAQ
How big a room does each cover?
Levoit's chart lists an ideal room size of 219 sq ft for the Core 300 and 403 sq ft for the Core 400S.
What is the price difference?
Levoit's chart lists MSRPs of $99.99 for the Core 300 and $219.99 for the Core 400S. Sale prices change often.
Can I control them from my phone?
The Core 400S works with the free VeSync app. The Core 300 has no Wi-Fi. If you want app control in a small room, Levoit's chart lists the Core 300S at $149.99.


