Bottom Line

Get the 300S for allergies and sleep. Get the 300P for pets and odors.

The Core 300S and Core 300P are nearly identical units. The meaningful difference is the filter each one is designed to use. The 300S is optimized for allergens and particles. The 300P uses a pet-specific filter with a thicker carbon layer for odor capture. Both cost around $100.

Choose the Core 300S if…
Your primary concern is dust mite allergens, pollen, or general particle filtration. Also the bedroom pick for sleep mode features.
Choose the Core 300P if…
You have pets and odor is a meaningful concern alongside dander. The thicker carbon layer in the pet filter handles odor compounds more effectively.

Side-by-Side Specs

Spec Levoit Core 300S Levoit Core 300P
Price~$100 (S) / ~$200 (SP)~$100
Coverage area219 sq ft219 sq ft
Noise on low24 dB24 dB
True HEPAYesYes
Activated carbonStandard layerThicker pet-specific layer
Auto-dim sleep modeYesNo
App / Wi-FiSP version onlyNo
SchedulingSP version onlyNo
Primary filter designAllergen / general particlePet dander and odor
FootprintCompact cylinderCompact cylinder
Smart featuresSP version (app, sensor)None

What They Share

The Core 300S and Core 300P are built on the same platform. Same cylindrical form factor, same 219 sq ft coverage area, same 24 dB noise level on low, same true HEPA filtration, same filter replacement cycle. If you swapped the housings without looking at the labels, you would not be able to tell them apart physically.

Both cost around $100 at standard pricing. Both are among the most practical budget air purifiers available for single-room use. The decision between them is almost entirely about which filter configuration matches your situation.

The Filter Is the Meaningful Difference

The Core 300S uses a standard HEPA filter with a carbon layer that is adequate for everyday odor control and particle filtration. It performs well for dust, pollen, dust mite allergens, and general household particles.

The Core 300P uses a pet-specific filter that includes a thicker activated carbon layer designed to handle the higher VOC and odor compound load that comes with pet ownership. Dogs and cats produce not just dander but body oils, saliva residue, and other organic compounds that a standard carbon layer does not capture as effectively. If pet odor is part of the problem, the 300P’s filter addresses it more directly.

Can you use a 300P filter in a 300S, or vice versa?

Yes. The filter dimensions are compatible across the Core 300 platform. This means if you own a Core 300S but get a pet and odor becomes a concern, you can switch to the 300P pet filter on the next replacement without buying a new unit. The smart and auto features of the 300S work with any compatible filter. This interchangeability makes the platform more flexible than it appears from the model names alone.

Where the 300S Has the Edge

The Core 300S has the better feature set for bedroom use. The auto-dim sleep mode, which turns off the indicator light when the room darkens, solves the most common reason people turn off bedroom purifiers at night. The 300P does not have this feature. If you run the purifier overnight in a dark bedroom, the 300S is noticeably more sleep-friendly.

The SP version of the Core 300S adds app control, scheduling, and a built-in air quality sensor for around $200. This makes it the only smart option in the Core 300 lineup. If you want to schedule pre-sleep high-speed runs that drop to quiet low automatically, the SP version is the only path to that.

Where the 300P Has the Edge

The thicker activated carbon in the pet filter is the 300P’s primary advantage. For households with one or two pets where odor is noticeable alongside dander, the 300P filter handles the gaseous odor compounds more effectively than the standard 300S filter. The HEPA performance is equivalent between both; the carbon is where they diverge.

The 300P is also the simpler unit. No app, no Wi-Fi, no smart features to configure. Three speeds, a filter change indicator, and a button. For people who want a no-setup air purifier that just runs, the 300P is straightforward in a way the 300S-P is not.

The Products

Levoit Core 300S ~$100 / ~$200

Levoit Core 300S

Core 300S from ~$100 ยท Core 300S-P (smart) ~$200, link opens the SP listing; select the S variant to save

Best for bedrooms, allergy sufferers, and anyone who wants sleep mode features. The SP version adds app control, scheduling, and an air quality sensor. Compatible with the Core 300P pet filter if your needs change.

219 sq ft True HEPA 24 dB on low Auto-dim sleep mode Smart features (SP)
Levoit Core 300P ~$100

Levoit Core 300P

Around $100 on Amazon

Best for pet owners where dander and odor are both concerns. The pet-specific filter includes a thicker carbon layer than the standard 300S filter. Simple no-app operation. Same coverage area and noise level as the 300S.

219 sq ft True HEPA 24 dB on low Pet-specific filter Thicker carbon layer

Frequently Asked Questions

Is the Core 300S the same as the Core 300?

No. The original Core 300 was a non-smart unit without Wi-Fi or app connectivity. The Core 300S added smart features in the SP version. The naming is confusing because Levoit uses “S” to indicate the smart platform and “P” to indicate the pet filter variant. The Core 300, Core 300S, and Core 300P are three distinct products on the same physical platform with different feature and filter configurations.

I have both allergies and a pet. Which should I get?

The Core 300P with a pet filter if odor is noticeable, or the Core 300S with a standard filter if allergen control is the primary concern and odor is minor. The most flexible option is the Core 300S-P (SP version), which gives you smart features and is compatible with the pet filter when you want to switch. If budget is tight and both concerns are real, the 300P and its pet filter address the higher combined load more directly than the standard 300S filter.

Does the thicker carbon in the 300P filter make a noticeable difference?

For pet odor specifically, yes. The difference is more apparent in smaller rooms where odor concentrations build faster, and in households where pets spend significant time on upholstered furniture. In a large, well-ventilated home with one small cat, the difference between the two filters is likely not noticeable day to day. In a smaller apartment with a dog that spends time on the sofa, the pet filter’s additional carbon capacity produces a measurable improvement in odor control.