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Vital 100S Replacement Filter Review

By Daniel Park Aug 8, 2026 ⏱ 11 min read Updated: Sep 3, 2026
vital 100s filter evaluation

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By Editorial Team · Reviewed for accuracy · Last updated September 2026

A replacement filter only makes sense if it fits your purifier correctly and gives you enough useful service life for the money. The PETOX Vital 100S Replacement Filter is a third-party 2-pack made for LEVOIT Vital 100S and Vital 100S-P air purifiers, using pleated filter media and activated carbon as part of the filtration setup. Its biggest advantage is getting two replacement filters in one package, while the main tradeoff is that it is not a genuine LEVOIT filter. This review explains the compatibility, filtration design, installation, maintenance, and buying considerations you should check before ordering.

Quick Verdict

Rating: 8/10, Recommended with caveats

Best For: Vital 100S or Vital 100S-P owners who want a value-focused third-party 2-pack.

Bottom Line: PETOX gives you two compatible replacement filters and a simple tool-free replacement process. It is worth considering for routine maintenance, but buyers who want genuine LEVOIT filtration specifications and OEM filter-life integration should choose the official filter instead.

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Specification Detail
Brand PETOX
Product type Air purifier replacement filter
Replacement reference Vital 100S-RF
Package quantity 2 filters
Listed materials Activated carbon and polypropylene, with pleated filter media described by the seller
Compatible purifiers LEVOIT Vital 100S and Vital 100S-P
Not compatible with LEVOIT Vital 100 and Vital 200S
Replacement guidance About every 6 to 12 months, depending on use and air conditions
Installation Tool-free replacement

Key Takeaways

  • This is a PETOX third-party replacement filter, not a genuine LEVOIT filter.
  • The package contains two Vital 100S replacement filters.
  • It is designed for the LEVOIT Vital 100S and Vital 100S-P air purifiers.
  • It does not fit the older Vital 100 or the larger Vital 200S.
  • The filtration setup uses pleated media and activated carbon alongside the purifier’s pre-filter.
  • PETOX recommends replacement about every 6 to 12 months, depending on your environment and usage.

Before You Buy: Check the label on your air purifier before ordering. Vital 100S and Vital 100S-P are compatible, but Vital 100 and Vital 200S are different models and require different filters. This PETOX product is also a third-party replacement rather than a genuine LEVOIT filter.

What Is the PETOX Vital 100S Replacement Filter?

The PETOX Vital 100S Replacement Filter is a replacement filter set intended for compatible LEVOIT air purifiers. The Amazon listing identifies PETOX as both the brand and manufacturer and lists the package as a 2-count.

The product is meant to replace filters identified around the Vital 100S-RF format. Its strongest buying point is simple: if you already own a Vital 100S or Vital 100S-P, you receive two replacement filters instead of buying a single filter at a time.

This distinction matters because the purifier and the filter are made by different companies. LEVOIT makes the compatible air purifier, while PETOX makes this replacement filter. You should not assume specifications published for the genuine LEVOIT filter automatically apply to the PETOX version.

Compatibility and Fit

Compatibility is the most important detail to check before buying. PETOX lists this replacement for the LEVOIT Vital 100S and Vital 100S-P. The seller specifically warns that it does not fit the LEVOIT Vital 100 or Vital 200S.

Those names are easy to confuse because they share the “Vital 100” wording. Check the model label on your purifier rather than relying on appearance alone. A filter that is close in shape but made for another model may not seal correctly or may prevent the purifier from operating as intended.

Pro Tip: Take a photo of the model label on your purifier before shopping for replacement filters. Compare that label with the compatibility list so you do not accidentally order a Vital 100 or Vital 200S filter.

How Does the Filtration Setup Work?

The seller describes a three-part filtration setup consisting of the purifier’s pre-filter, pleated filter media, and an activated carbon layer. The pre-filter is part of the purifier setup rather than a separate extra filter supplied in this 2-pack.

Pre-Filter Stage

The pre-filter handles larger debris before air reaches the finer filter media. This can include visible dust, lint, and pet hair. Removing larger material early helps reduce how quickly the deeper filter layers become loaded.

Pleated Filter Media

The pleated section provides a larger filter surface inside a compact frame. PETOX markets this stage for airborne-particle filtration. Because no independent particle-efficiency certification for this specific PETOX ASIN was verified during this review, you should not assume it has the exact efficiency rating published for LEVOIT’s genuine filter.

Activated Carbon Layer

Activated carbon is included to help with odors and gases passing through the purifier. It can be useful in homes where cooking smells, pets, smoke, or other household odors are common. Carbon capacity is finite, so odor performance can fade before the filter looks completely dirty.

Materials and Build

Amazon lists activated carbon and polypropylene among the materials for this PETOX filter. The seller also describes pleated filter media as part of the construction.

The filter is designed as a replaceable component rather than a permanent washable cartridge. You should treat the pleated and carbon sections as consumable filtration media and follow the current PETOX instructions supplied with the product.

The original article described the filter as eco-friendly and linked its construction to lower energy use. Those claims are difficult to evaluate without independent testing, so they should not be a primary reason to buy this product.

Installation and Replacement

PETOX describes installation as tool-free. That is useful because routine filter service should not require disassembling the purifier or using specialized equipment.

Before replacing the filter, turn the purifier off and disconnect it from power. Open the filter compartment according to the purifier manual, remove the used filter, clean loose dust from accessible areas as directed by the manufacturer, and install the replacement in the correct orientation.

Make sure any protective packaging is removed before operating the purifier. A filter left inside a plastic shipping bag will block airflow and prevent normal filtration.

When Should You Replace It?

PETOX recommends replacing the filter about every 6 to 12 months. That is a general interval rather than a guarantee. Your actual replacement schedule depends on how often you run the purifier and how much dust, pet hair, smoke, or other pollution it handles.

A home with several pets, frequent cooking odors, wildfire smoke, or heavy airborne dust may load a filter faster. A cleaner environment with lighter purifier use may allow it to remain useful longer.

Do not judge filter condition by calendar age alone. Reduced airflow, persistent odors, heavy visible loading, or a replacement reminder can all be reasons to inspect the filter sooner.

Who Should Buy It?

Best For

  • Owners of a LEVOIT Vital 100S or Vital 100S-P who want a two-filter package.
  • Buyers comfortable using a third-party replacement instead of an OEM filter.
  • Households that prefer to keep a spare filter ready for the next service interval.

Skip If

  • You own a Vital 100, Vital 200S, or another LEVOIT model.
  • You specifically want a genuine LEVOIT replacement filter.
  • You want filtration performance backed by the same published testing and filter-life integration as the OEM filter.

How It Performs in Real Use

For Everyday Dust and Household Use

The standard white PETOX filter is positioned as the general-purpose option in the seller’s Vital 100S replacement-filter range. For normal household use, the combination of a pre-filter, pleated media, and activated carbon gives the purifier multiple stages for dealing with particles and odors.

For Homes With Pets

The purifier’s pre-filter can catch larger pet hair before it reaches the deeper filter media, while activated carbon can help with odors. PETOX also lists a separate yellow Pet Care version, so buyers dealing mainly with pet-related air problems may want to compare that specialized option with the standard white version.

For Smoke or Strong Odors

Activated carbon adds odor-control capability, but PETOX also lists specialized green toxin-absorber and blue smoke-remover variants. If smoke or stronger odor control is your main reason for replacing the filter, compare those versions instead of assuming the general-purpose filter is the best choice.

For Long-Term Maintenance

The two-pack format is convenient if you plan to keep the same purifier for more than one replacement cycle. You can install one filter and store the second in its protective packaging until needed. Keep the spare in a clean, dry place so dust and odors do not load the carbon before installation.

Setup and Maintenance Tips

  • Confirm the purifier model first. Vital 100S and Vital 100S-P are the compatible models listed for this filter.
  • Remove all shipping packaging. Do not operate the purifier with protective plastic around the replacement filter.
  • Install it in the correct orientation. Follow the purifier’s manual rather than forcing the filter into position.
  • Maintain the pre-filter. Large debris on the pre-filter can restrict airflow before air reaches the replaceable media.
  • Watch real conditions. Heavy smoke, pet hair, dust, or long daily run times can shorten the practical replacement interval.
  • Store the spare carefully. Keep the second filter sealed and dry until you are ready to use it.

Compatibility and Safety

This filter should be used only in the purifier models listed as compatible. Do not trim, reshape, compress, or otherwise modify a filter to make it fit another purifier.

No specific child-safety, pet-safety, medical, or independent filtration certification for this PETOX ASIN was verified for this review. The filter is an air-purifier maintenance component, not a medical device, and it should not be described as treating or preventing health conditions.

For installation, cleaning, and replacement procedures, follow the instructions supplied with the filter and your LEVOIT purifier manual. If your purifier is damaged, produces unusual noise, overheats, or operates abnormally after a filter change, turn it off and troubleshoot the fit before continued use.

Pros and Cons

Pros

  • Two replacement filters are included in one package.
  • Specifically listed for Vital 100S and Vital 100S-P purifiers.
  • Uses pleated filter media and activated carbon in the filtration setup.
  • Tool-free replacement keeps routine maintenance simple.
  • Seller guidance provides a practical 6 to 12 month replacement range.

Cons

  • It is a third-party PETOX filter rather than a genuine LEVOIT filter.
  • It does not fit the Vital 100 or Vital 200S despite the similar model names.
  • Verified independent efficiency specifications for this exact PETOX filter are limited.

Is It Worth the Price?

The PETOX Vital 100S Replacement Filter is positioned as a value-focused two-pack. Its value is strongest if you know you will keep your compatible purifier through multiple filter changes because the second filter can remain stored until the next service interval.

It is worth considering if your priority is straightforward compatibility and having a spare filter ready. The tradeoff is that you give up the certainty of buying the genuine LEVOIT replacement, including any OEM-specific performance validation or filter-life behavior.

For buyers who care more about manufacturer-backed specifications than pack quantity, paying for the genuine filter may make more sense.

How It Compares to Alternatives

The most direct alternative is the genuine LEVOIT Vital 100S-P Replacement Filter. LEVOIT publishes specific filtration information for its genuine filter and states that its filter-life indicator and built-in replacement algorithm are designed around authentic filters. That makes the OEM option the stronger choice if manufacturer validation is your priority.

LEVOIT also offers specialized Vital 100S-P Pet Allergy, Toxin Absorber, and Smoke Remover replacement filters. PETOX lists its own standard, pet-care, toxin-absorber, and smoke-oriented choices as well. The basic PETOX 2-pack makes the most sense if you mainly want general-purpose replacement filters and value the extra filter in the package.

Frequently Asked Questions

Does the PETOX Vital 100S filter fit both Vital 100S and Vital 100S-P?

Yes. PETOX lists this replacement filter as compatible with the LEVOIT Vital 100S and Vital 100S-P. Check the model label on your purifier before ordering because similar Vital model names use different filters.

Will it fit the LEVOIT Vital 100 or Vital 200S?

No. The PETOX listing specifically says this Vital 100S replacement does not fit the Vital 100 or Vital 200S. Those purifiers require their own compatible filter sizes.

Is this a genuine LEVOIT replacement filter?

No. Amazon identifies PETOX as the brand and manufacturer. The filter is designed for compatible LEVOIT purifiers, but it should be treated as a third-party replacement.

How often should you replace the filter?

PETOX recommends replacement about every 6 to 12 months. Heavy dust, pets, smoke, odors, high pollution, or long daily operating hours can make earlier replacement necessary.

Can you wash and reuse the replacement filter?

Treat the pleated and activated-carbon replacement media as disposable unless the current PETOX instructions specifically say otherwise. The purifier’s separate pre-filter is the component you should maintain according to the LEVOIT purifier manual.

How many filters come in the package?

This ASIN is listed as a 2-count package containing two replacement filters. That lets you install one and keep the second sealed for a future filter change.

Who should choose the genuine LEVOIT filter instead?

Choose the genuine filter if OEM specifications, manufacturer-backed filtration testing, or LEVOIT’s filter-life system are important to you. The PETOX option is better suited to buyers comfortable with a compatible third-party replacement.

The Bottom Line

The PETOX Vital 100S Replacement Filter is a practical 2-pack for LEVOIT Vital 100S and Vital 100S-P owners who are comfortable using a third-party filter. Its strengths are clear compatibility, activated-carbon filtration, simple replacement, and two filters per package, while its main limitation is the lack of the same OEM-specific validation associated with the genuine LEVOIT filter.

If you have the correct purifier model and prioritize two-filter value, it earns our 8/10, Recommended with caveats verdict. Skip it if you own a Vital 100 or Vital 200S, or if you specifically want genuine LEVOIT replacement media.

Ready to Buy?

Check the latest product details and confirm your purifier model before you decide.

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Daniel Park
Daniel Park
Daniel Park covers home air quality for Nordic Design Blog — dehumidifiers, air purifiers, and the replacement filters that keep them working. It is the largest section of the site, and the one readers arrive at with the most specific problems: a basement that never dries out, a bedroom that smells stale, a filter that costs more than the machine did. His guides focus on the numbers that actually predict performance — pint capacity against room size, CADR against square footage, true HEPA against 'HEPA-type' — and on the running costs people only discover after buying. Daniel is more interested in matching capacity to the room than in recommending the largest unit available. He also writes the replacement-filter coverage, comparing original and third-party options on fit, filtration claims, and cost per year. His view is that a dehumidifier or purifier is only as good as the maintenance schedule its owner can realistically keep.

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