Best Air Purifier For Cat Litter Smell

Does the thought of scooping the litter box fill you with dread because of the lingering odor? You love your feline friend, but that distinct cat smell can quickly take over your home, no matter how often you clean. Many cat owners face this challenge daily. Finding an air purifier that genuinely tackles tough litter box odors feels like a quest for a hidden treasure.

The market is flooded with purifiers promising fresh air, but which ones actually work against ammonia and that tell-tale scent? It’s confusing to know which filters matter most—HEPA or Activated Carbon? You want effective relief without buying a machine that just circulates dusty air. This guide cuts through the noise.

We will break down exactly what features you need to look for to eliminate that persistent litter smell for good. By the end of this post, you will know the best types of purifiers designed specifically for pet odors. Get ready to reclaim your living space and enjoy a fresher home environment!

Top Air Purifier For Cat Litter Smell Recommendations

SaleBestseller No. 1

LEVOIT Air Purifiers for Bedroom Home Dorm, AHAM VERIFIED, 3-in-1 Filter Claener with Fragrance Sponge, Portable Filters Smoke, Allergens, Pet Dander, Odor, Dust, Office, Desktop, Core Mini-P, White

𝗥𝗘𝗠𝗢𝗩𝗘 𝗣𝗢𝗟𝗟𝗨𝗧𝗔𝗡𝗧𝗦 𝗘𝗩𝗘𝗥𝗬𝗪𝗛𝗘𝗥𝗘: Our Pre-Filter and Main Filter capture lint, hair, pet dander, fine airborne pollutants, and smoke particles, helping achieve a cleaner environment for you
𝗛𝗘𝗟𝗣 𝗠𝗔𝗞𝗘 𝗢𝗗𝗢𝗥𝗦 𝗢𝗗𝗢𝗥𝗟𝗘𝗦𝗦: The Activated Carbon Filter helps neutralize smoke, odors, and fumes. You’ll love the feeling of breathing deeply at home
𝗨𝗦𝗘 𝗜𝗧 𝗔𝗡𝗬𝗪𝗛𝗘𝗥𝗘: With the Levoit Core Mini-P air purifiers for home, focus on your activities in the bedroom, kitchen, or office. It offers an auto-off display for uninterrupted sleep and calming aromatherapy
#𝟭 𝗔𝗜𝗥 𝗣𝗨𝗥𝗜𝗙𝗜𝗘𝗥 𝗕𝗥𝗔𝗡𝗗: Levoit has sold over 6.5 million products worldwide, is available in 35 countries and regions, and has been a pioneer in air purification technology for 6 years
𝗚𝗘𝗡𝗨𝗜𝗡𝗘 𝗟𝗘𝗩𝗢𝗜𝗧 𝗙𝗜𝗟𝗧𝗘𝗥𝗦: Only use genuine Levoit replacement parts to maintain the best performance (Search for Core Mini-RF). Off-brand filters are inconsistent, unreliable, and may damage the air purifier

Bestseller No. 2

LEVOIT Air Purifier for Home Allergies Pet Hair in Bedroom, Covers Up to 1073 ft² by 56W High Torque Motor, AHAM VERIFIDE, 3-in-1 Filter with HEPA Sleep Mode, Remove Dust Smoke Odor, Core300-P, White

WHY CHOOSE AHAM VERIFIDE AIR PURIFIERS: AHAM (Association of Home Appliance Manufacturers) is an ANSI-accredited organization that sets strict standards for appliance performance. Air purifiers with the AHAM VERIFIDE seal have been independently tested for air cleaning performance, safety, and energy efficiency. When you choose an AHAM certified air purifier, you're choosing a product trusted for reliable and effective indoor air quality improvement
HIGH-PERFORMANCE AIR PURIFICATION: Powerful 56W High-Torque Motor paired with a 143 CFM CADR ensures fast, effective air cleaning. Cleans rooms up to 1,073ft² with the original filter. The Levoit original filter is HEPA-grade while operating in Sleep Mode with industry-tested results. Compact Size: 8.7" × 8.7" × 14.2" | Weight: 7.9 lbs – ideal for home, bedroom, or office
AHAM VERIFIDE FOR PROVEN PERFORMANCE: The Core 300-P is AHAM VERIFIDE with CADR (Clean Air Delivery Rate) ratings of 143 CFM for smoke, 153 CFM for dust, and 167 CFM for pollen, giving you verified, transparent results
GENUINE REPLACEMENT FILTERS: For the best performance and longest lifespan, use official Levoit replacement filters. Levoit filters provide the best fit and filtration, while off-brand filters may be unreliable and may damage the air purifier
MULTIPLE FILTER CHOICES: Choose from a variety of replacement filters to best meet your needs. The Toxin Absorber Filter specializes in smog, toxins, and VOCs, while the Smoke Remover filter addresses smoke from wildfires, smoke, and other particulates. The Pet Allergy Filter captures fur and absorbs unpleasant odors

SaleBestseller No. 3

Air Purifier Ozone & Negative Ion 99% Odor Eliminator for Pet,Cat Litter Deodorizer,Dog Poop Odor Removal | Plug-In Air Ionizer Ozone Generator Air Purifier for Home, Pets, Cars,Bedroom-White

【Dual Purification & Switchable Modes】Piuerds Air Purifier Odor Eliminator deodorizes quickly; enables 99.99% odor removal efficiency. It combines ozone (150mg/H output) and negative ion (12 million ions) functions for dual purification, with one-button switching between independent ozone/negative ion modes. Neutralize and remove all-source odors and embrace healthy, fresh air.
【Suitable for Various Scenarios】PIUERDS Ozone + Negative Ion Odor Eliminator targets multi-source odors (cat litter, dog urine, pet smells, bathroom/toilet odors, smoke, kitchen fumes, new house formaldehyde) and suits home spaces like bathrooms, bedrooms, shoe cabinets, kitchens, nurseries, pet rooms, and hotel closets. Unlike masking sprays, it eliminates pet odors and other smells at the source for lasting freshness. This air purifier continuously eliminates odors to keep your home fresh.
【Multiple Purification Cycle Modes】The air purifier features 4 adjustable ozone cycle modes (P1-P4, each with specific working time), 9 negative ion timing options (1h-9h), and 6 UV timing options (1U-6U, meaning 1h to 6h). Ideal for 10–50㎡ spaces, it allows free adjustment of working time by room size to meet diverse needs and fully purify every corner for households.
【Low Maintenance & Filter-Free】It’s compact, lightweight, and plug-and-play—saving space and replacing bulky, expensive air purifiers. Just plug it in to generate ozone and negative ions. No filter replacement needed. Easy to install, with a sleek design and premium packaging (ideal as a gift). Eco-friendly, zero extra maintenance: no component replacement hassle, saving time and money. It’s easy to carry and store, so you can take it anywhere and anytime.
【Ultra-Quiet Operation + Smart Circulation】Fully silent, noise-free design for an undetectable, peaceful environment—it’s perfect for long-term use in quiet spaces like offices, bedrooms, nurseries, or studies. 24/7 air cleaning without traditional air purifiers’ annoying hum (won’t startle pets or disrupt sleep). 360° stable airflow purifies every corner. Easy to operate, with a built-in slot for optional aroma tablets (not included) to add personalized scents beyond odor removal.

Bestseller No. 4

AIRROMI HEPA Air Purifier for Bedroom&Home,Pet Air Purifier for Home Pets,Removes Pet Odor,Cat Litter Smell,Dust,Smoke&Allergies,Quiet Room Air Purifier with Scents,360°Air Cleaner,A2005 White

🐾【Pet Air Purifier for Home - Eliminates Dander, Litter Smell, Dog Smell & Pee Smell】 The AIRROMI A2005 is engineered as a powerful pet air purifier for homes with cats and dogs, targeting pet dander, cat litter smell, dog smell, and even pee smell. It works as a true pet odor eliminator for home and is ideal for families needing air purifiers for home pets, pet air purifiers for home pee smell, and all-in-one odor + allergy removal. A must-have for multi-pet households, puppy owners, and apartments.
🌿【Advanced HEPA Filtration - Best Air Purifier for Bedroom Allergies & Dust】 Equipped with a premium HEPA air purifier filter, the AIRROMI A2005 air purifier captures 99.97% of airborne particles including dust, pollen, smoke, allergens, pet hair, and micro-irritants. Whether you need an air purifier for bedroom allergies, a room air purifier, or everyday air purifiers for dust, AIRROMI ensures cleaner, healthier air—especially during allergy and pollen seasons.
🏠【Whole-Room Performance - Air Purifiers for Home & Large Rooms】 With a 360°air intake and optimized airflow, the A2005 air purifier delivers fast, uniform purification for spaces up to 549–700 ft². Ideal for those seeking air purifiers for home, large room air purifiers for home, bedroom air purifiers, or compact small air purifiers—perfect for dorms, nurseries, kitchens, offices, and pet areas.
🌸【Air Purifier with Essential Oil Diffuser - Clean Air + Fresh Scent】 Enjoy clean air with relaxing fragrance! Use the built-in fragrance pad to add your favorite essential oils, transforming this device into a 2-in-1 air purifier with scent and essential oil diffuser—delivering both powerful purification and refreshing aromas. Perfect for bedrooms, pet rooms, litter box areas, or any space needing fresh, fragrant air—this air purifier with scents combines functionality with sensory comfort, making every corner of your home inviting.
😴【Ultra-Quiet 22 dB Sleep Mode - Quiet Air Purifiers for Home】 Operating as quietly as 22 dB, the A2005 mini air purifier is one of the top quiet air purifiers for home and an ideal bedroom air purifier for light sleepers, babies, and pets. Experience continuous clean air throughout the night free from noise disturbance. Perfect for nightstands, small spaces, and pet sleeping areas.

SaleBestseller No. 5

Morrerfresh Cat Litter Deodorizer & Pet Odor Eliminator for Home, Ozone Air Purifier Plug in for Strong Dog Poof, Litter Box Deodorizer with 5 Mode for Smoke, Wardrobe, Garage, Car

𝐍𝐞𝐮𝐭𝐫𝐚𝐥𝐢𝐳𝐞𝐬 𝐏𝐞𝐭 𝐎𝐝𝐨𝐫𝐬 𝐚𝐭 𝐓𝐡𝐞 𝐒𝐨𝐮𝐫𝐜𝐞 - Tired of air fresheners that fail? Our advanced pet odor eliminator neutralizes the toughest cat urine smell, litter box odors, and pet dander smells at the molecular level. It doesn't mask—it eliminates odor sources for a home that stays fresh for months, not just hours. The ultimate lasting solution for pet owners
𝟓 𝐌𝐨𝐝𝐞𝐬 𝐟𝐨𝐫 𝐄𝐯𝐞𝐫𝐲 𝐏𝐞𝐭 𝐎𝐝𝐨𝐫 - Target different challenges with 5 preset modes (P1-P5). Need a quick refresh for a small room or after a minor accident? Use P1. Battling severe odors from multiple litter boxes, pet bedding, or large areas? P5 delivers a powerful, deep-clean cycle. This customizable control ensures the perfect treatment for every situation
𝐏𝐨𝐰𝐞𝐫𝐟𝐮𝐥 & 𝐒𝐚𝐟𝐞 𝐟𝐨𝐫 𝐏𝐞𝐭 𝐇𝐨𝐦𝐞𝐬 - Engineered for peace of mind. Our air purifier and deodorizer uses effective purification technology strong enough to break down the toughest organic pet odors, all within safe operational guidelines. The automatic timer ensures a controlled, set-and-forget operation for worry-free use
𝐒𝐢𝐥𝐞𝐧𝐭, 𝐅𝐢𝐥𝐭𝐞𝐫𝐥𝐞𝐬𝐬 & 𝐄𝐚𝐬𝐲 𝐭𝐨 𝐔𝐬𝐞 - A silent guardian with no hassle. Its ultra-quiet operation won't disturb sleep or startle pets, perfect for bedrooms or next to the litter box. The completely filterless design means no costly replacements—ever. Simply plug it into any wall outlet, select the mode, and enjoy continuous, maintenance-free protection
𝐅𝐫𝐞𝐬𝐡 𝐇𝐨𝐦𝐞, 𝐒𝐢𝐦𝐩𝐥𝐞 𝐒𝐭𝐞𝐩𝐬 - Achieve professional-grade results easily. (1) Choose the mode (P1-P5) based on your pet odor challenge. (2) Run it in the unoccupied space. (3) After the cycle, ventilate the area. Ideal for concentrated use in pet zones, living rooms after accidents, around cat litter areas, or in cars that transport pets. Reclaim a home that always smells clean and welcoming

Bestseller No. 6

Morrerfresh Cat Litter Deodorizer – 99% Odor Eliminator for Strong Pet Odors, Plug In Negative Ion Air Purifier for Litter Box, Home, Kitchen, Bathroom, Ozone-Free & Quiet Portable (Unscented)

𝐄𝐥𝐢𝐦𝐢𝐧𝐚𝐭𝐞 𝐏𝐞𝐭 𝐎𝐝𝐨𝐫𝐬, 𝐎𝐳𝐨𝐧𝐞-𝐅𝐫𝐞𝐞. Our advanced negative ion generator directly targets and neutralizes the pet smells at the source. Unlike odor eliminator sprays that just mask odors, this litter smell eliminator safely breaks down particles from litter boxes, pet beds, and dander. This gradual purification process works continuously to keep your home fresh.
𝐖𝐡𝐢𝐬𝐩𝐞𝐫-𝐐𝐮𝐢𝐞𝐭, 𝐃𝐢𝐬𝐭𝐮𝐫𝐛𝐚𝐧𝐜𝐞-𝐅𝐫𝐞𝐞 𝐏𝐮𝐫𝐢𝐟𝐢𝐜𝐚𝐭𝐢𝐨𝐧. Engineered with a fanless, silent operation design. This quiet portable air filter odor eliminator cleans your air 24/7 without the annoying hum produced by traditional purifiers, ensuring it won't startle timid cats or disrupt your sleep. Enjoy a peaceful and serene home environment, perfect for placing in bedrooms, nurseries, or right next to a litter box without adding any noise pollution.
𝐏𝐥𝐮𝐠 𝐈𝐧 & 𝐅𝐨𝐫𝐠𝐞𝐭 - 𝐙𝐞𝐫𝐨 𝐌𝐚𝐢𝐧𝐭𝐞𝐧𝐚𝐧𝐜𝐞 𝐂𝐨𝐬𝐭𝐬. A true filterless design. Say goodbye to the hassle and expense of searching for and replacing costly filters. As a dedicated plug in odor eliminator, its one-time purchase provides years of service. Save time and money with a truly maintenance-free solution. Simply plug it in for continuous, cost-effective air purification without any hidden future costs.
𝐄𝐟𝐟𝐞𝐜𝐭𝐢𝐯𝐞𝐥𝐲 𝐑𝐞𝐝𝐮𝐜𝐞𝐬 𝐏𝐞𝐫𝐬𝐢𝐬𝐭𝐞𝐧𝐭 𝐎𝐝𝐨𝐫𝐬. Designed as a targeted cat odor eliminator for strong odor, this device releases air-purifying negative ions to help break down stubborn smells. For optimal results, allow for continuous operation in your desired space. It works on more than just litter boxes, helping to lessen lingering cooking fumes, bathroom mustiness, and smoke.
𝐁𝐫𝐞𝐚𝐭𝐡𝐞 𝐄𝐚𝐬𝐢𝐞𝐫, 𝐋𝐢𝐯𝐞 𝐇𝐞𝐚𝐥𝐭𝐡𝐢𝐞𝐫. Actively freshens your space by releasing negative ions. These ions attach to airborne particles like dust and pet dander, helping them fall out of the air. This creates a cleaner, more pleasant atmosphere beyond simple odor management. The compact plug-in design also features a built-in groove, allowing you to add a few drops of your favorite essential oil (not included) for a touch of personalized fragrance in your home.

SaleBestseller No. 7

Air Purifiers for Home Large Room up to 2200sq.ft, MOOKA Air purifier for Home Pets with Washable Filter, PM 2.5 Display Air Quality Sensor Air Cleaner for Bedroom, Dorm room, Pets, Office PR1 (White)

MORE AIR INTAKE & HIGH-EFFICIENCY: This is the 2024 latest MOOKA PR1 HEPA air purifiers for home. To quickly purify the air without causing clogging, PR1 air purifier not only has normal surface air intake but only with a wider sided air inlet design, up to 2200 Ft². This effectively captures most air pollutants, which include pet hair, smoke, PM 2.5, and bad smell, and has powerful filtration performance against ultra-fine particles.
AIR PURIFIER DESIGNED FOR PET LOVERS: This home pet air purifier is innovatively designed with the "Pet Mode". In this mode the increased purification effect helps capture pet hair and pee smell in the air faster, significantly improving indoor air quality and helping you and your Families enjoy cleaner air. You can also water clean the washable pre-filter to extend the life of the 4-stage filtration system and dry the shade before using the air purifiers for home pets again.
DUST DETECTION & AIR QUALITY DISPLAY: This PR1 air purifiers for home large room is equipped with a PM2.5 sensor and will display real-time air quality levels on the air purifier screen. In Auto mode, the fan speed will automatically adjust to protect your air quality while you rest, you can clean it regularly to maintain the correction. Note: After powering on, the air purifier for the dorm is in a preheating state and the indicator light will continue to flash for one minute.
QUIET OPERATION & MULTI-FUNCTION: The air purifier for bedroom has 6 adjustable fan speed modes (Sleep/I/II/III/Auto/Pet), and the sleep mode is very quiet with noise as low as 26dB, so enjoy fresh air while sleeping sweetly. Additionally, the PR1 HEPA air purifier has a considerate Timer and Child Lock design. The aroma function can bring a pleasant aroma to the room or cover up an unpleasant smell. Tip: when the first time using an aroma, moisten the aroma pad with more essential oil.
FILTER REPLACEMENT REMINDER: Air purifiers are ideal for large indoor spaces, especially large bedroom, dorm, living room, office, nursery, apartment, basement and kitchen. This air purifier with washable filter has a filter replacement reminder function, the filter indicator light will light up to remind you to replace the filter. Press "Filter Reset" button for 3 seconds to reset it. We recommend buying official MOOKA filters to replace the filter every 3-6 months for optimal purification.(Search for B0DD3ZZ7ZV)

SaleBestseller No. 8

Pet Air Purifier for Home Large Room 2500 sq ft, H13 HEPA Washable Double-Sided Filter, Air Cleaner for Pet Hair Dander Odor Allergies Pollutant Smoke Dust, PM2.5 Air Quality Monitor, Auto Mode, Grey

U Shape Air Inlet,No Hair Stuck, Firmly Absorb Pet Floating Hair: Traditional fence or hole air Inlet can clog most pet hairs. Our this HEAPETS P358 air purifier with strong suction of U-shaped air inlet and the static pre-filter customized for pets can quickly and firmly adsorb pet floating hair like dog hair, cat hair, pet dander etc., and prevent floating hair from being re-released into the air and causing secondary pollution.
Effectively Reduces Smell Odors from Pet: Pet formula activated carbon, effectively adsorbs and reduces various odors like pet odor, litter box odor, dog smell, cat smell, pet urine, vaping smell and cooking smell etc. Also with H13 HEPA filter it's perfect for families with pets and "sensitive to air quality" group.
Small Size, Large Coverage: With a footprint similar to A4, its dual-sided and super-large air intake can cleans air from both sides simultaneously, delivering 2 times faster purification compared to traditional single-intake model. With a CADR of 176 CFM (295m³/h), this P358 pet air purifier refreshes the air in large areas up to 2500 ft² every hour. It's all perfect for bedroom, living room, office, nursery, kitchen, basement, apartment, etc.
6-Stage Advanced Air Purification System: this pet air purifier is based on the general air purifier to increase the function to adsorb pet floating hair and solve the pet odor. The 6-layer filtration system rapidly cleans indoor air within minutes, effectively filtering out pet dander, airborne fur, stubborn odors, dust, smoke, particles, common allergies and pollutant for dog room, cat room, etc.
Multifunctional and Quiet Operation: Our this P358 air purifier for pets has PM2.5 Display and Air Quality Indicator that monitor the air quality in real time. It also has many other smart features such as 5 fan speed modes (Auto P0, P1 P2 P3 P4), Pet Lock, Timer, Filter Replace Reminder and Quiet Sleep Mode which automatically adjusts to protect your air quality as you rest, and turn off the indicator lights for all the light sensitive sleepers out there.

The Ultimate Buying Guide: Choosing the Best Air Purifier for Cat Litter Smell

Cat owners love their furry friends, but that litter box smell? Not so much. An air purifier can be a game-changer for keeping your home smelling fresh. This guide helps you pick the right one for tackling those tough cat odors.

1. Key Features to Look For

When shopping, focus on features that specifically target smells. A basic dust filter won’t cut it. You need odor-fighting power.

Activated Carbon Filter: This is the most important feature. Activated carbon traps odor molecules, not just dust. Look for a thick, high-quality carbon layer.
CADR Rating (Clean Air Delivery Rate): This tells you how fast the purifier cleans the air. For a litter box area, you need a high CADR rating relative to the room size. A higher number means faster cleaning.
Filter Replacement Indicator: Good purifiers tell you when to change the filters. Ignoring this lowers performance significantly.
Quiet Operation (Decibel Levels): Since the litter box might be near a living area, look for low decibel (dB) ratings, especially on low or sleep settings.

2. Important Materials and Filter Types

The materials inside the machine determine how well it works against ammonia and other litter box scents.

Activated Carbon (The Odor Warrior): This carbon is treated to be very porous. It absorbs smelly chemicals. More carbon mass usually means better odor control that lasts longer.
HEPA Filter (For Dust and Dander): While HEPA filters do not remove smells, they capture the tiny dust particles and dander that often carry odor. A true HEPA filter captures 99.97% of particles down to 0.3 microns. Most good units use a pre-filter, a HEPA filter, and then the carbon filter.
Avoid Ozone Generators: Some older or very cheap units use ionization that creates ozone. Ozone can irritate lungs and is often banned in high concentrations. Stick to mechanical filtration (HEPA and Carbon).

3. Factors That Improve or Reduce Quality

Not all purifiers perform equally against pet odors. Pay attention to these factors.

Factors That Improve Quality:

Large Carbon Weight: Heavy-duty purifiers use pounds of carbon, not just a thin layer sprinkled on a screen. This improves odor removal significantly.
360-Degree Air Intake: Units that pull air from all sides clean the room faster than those that only pull air from the back.
High Air Change Rate: The purifier should be able to cycle the air in the room four or five times every hour (ACH).

Factors That Reduce Quality:

“Washable” Carbon Filters: These filters usually do not offer true, long-term odor absorption. They are less effective than disposable carbon filters.
Small Room Rating: Using a small unit in a large area means the smell will linger because the machine cannot keep up.

4. User Experience and Use Cases

Think about where you will place the purifier and how you interact with it daily.

Placement Near the Source: Place the purifier as close to the litter box as possible without blocking access. This captures the odor before it spreads through the house.
Automatic Mode: Many modern units have sensors that detect changes in air quality. When the cat uses the box, the sensor detects the ammonia spike, and the fan automatically speeds up. This is a huge convenience.
Filter Cost and Availability: Calculate the annual cost of replacement filters. A cheap initial purchase might mean very expensive filters every six months. Check online reviews regarding filter longevity.

10 Frequently Asked Questions (FAQ) About Cat Litter Air Purifiers

Q: Can an air purifier completely eliminate cat litter smell?

A: Yes, a high-quality purifier with a thick activated carbon filter can nearly eliminate the smell, especially if placed near the litter box. It removes the odor molecules from the air.

Q: How often should I change the filters?

A: Most manufacturers suggest changing the HEPA and Carbon filters every 6 to 12 months. If you have multiple cats or very strong odors, you might need to change the carbon filter sooner, perhaps every 4 to 6 months.

Q: Do I need a HEPA filter if I only care about the smell?

A: Yes, it is highly recommended. The HEPA filter captures the dust and dander that carry the odor, making the carbon filter’s job much easier and extending its life.

Q: Which room size should I choose for my litter area?

A: Always choose a purifier rated for a room size larger than the actual space. For example, if the litter box is in a 100 sq. ft. bathroom, buy a model rated for 150–200 sq. ft. This ensures a higher air change rate.

Q: Are ionic or UV purifiers better for litter smells?

A: Generally, no. Activated carbon filtration is the proven method for chemical odors like ammonia. Ionic and UV lights can sometimes produce ozone, which is not ideal for indoor air quality.

Q: Will the purifier work if the litter box is in a closed closet?

A: It will work better if the closet door is slightly ajar, allowing air to circulate. If the closet is sealed, the purifier will only clean the air inside that small space.

Q: How long does it take for a new purifier to start working?

A: You should notice a reduction in odor within the first hour of running the unit on a medium or high setting. Full air purification takes several hours.

Q: Does the type of cat litter affect the purifier’s performance?

A: Yes. Clay litters that produce a lot of fine dust create more work for the HEPA filter. Dust-free or natural litters often result in less overall strain on the system.

Q: Can I turn the fan speed down during the day?

A: Yes. Many users run the purifier on high right after cleaning the box, then switch it to a low or auto setting for quiet daily maintenance.

Q: What is the downside of buying a very cheap air purifier?

A: Cheap purifiers usually have very little activated carbon. They might smell okay for a few days, but the odor will quickly return because the carbon gets saturated fast.