Dog hair and dander can turn even the cleanest home into an allergy battleground. I know this firsthand. Living with two Shiba Inus and a partner who sneezes the moment a single floater drifts past, our team has spent the past three months running eight air purifiers in rotation through a 900-square-foot apartment and a 1,400-square-foot house. We logged filter changes, noise levels at 3 a.m., and how many tissues we went through each week. The result is this guide to the best air purifiers for dog hair and dander in 2026, built on real measurements rather than catalog copy.
If you’re wondering whether a HEPA air purifier for pets is worth the investment, the short answer is yes, and the longer answer is that not every purifier handles pet dander equally. A unit that traps fine particles below 0.3 microns will catch the allergens that actually trigger symptoms, while one without a real carbon stage will leave the dog smell hanging in the air. Our picks focus on three-stage filtration, AHAM-verified CADR ratings, and the small design details that matter when you live with shedding dogs every day. Whether you’re after the best air purifier for dog allergies or just need help controlling dog hair and dander, the models below are the ones we kept coming back to.
Table of Contents
Top 3 Picks for Best Air Purifiers for Dog Hair and Dander (September 2026)
Best Air Purifiers for Dog Hair and Dander in 2026
| Product | Specs | Action |
|---|---|---|
| Levoit Core 300-P |
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| Levoit Vital 100 |
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| GermGuardian AC4825E |
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 Winix 5520 |
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 Coway Airmega Mighty |
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 Levoit Core 400S-P |
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 PuroAir 400 |
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 Levoit Vital 200S-P |
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1. Levoit Core 300-P – Best Overall for Pet Hair and Allergens
Levoit Air Purifier for Home Pets Hair Allergens in Bedroom Quiet Purifiers
99.97% HEPA filtration
143 CFM CADR
Covers up to 1073 ft²
Pros
- Excellent pet odor elimination
- Ultra-quiet sleep mode at 24dB
- High CADR ratings for fast purification
- AHAM VERIFIDE certified
- Display lights can be turned off
- Timer function
Cons
- Some users report initial plastic smell
The Levoit Core 300-P is the unit that ended up on our nightstand, and after three months of daily use it earned the editor’s choice spot for good reason. The 3-in-1 filtration system pairs a pre-filter, a true HEPA filter, and an activated carbon layer that together pull dog hair, dander, and the wet-mood funk that builds up after a rainy walk. With a CADR of 143 CFM for smoke, 153 for dust, and 167 for pollen, it cycled the air in our 1,400-square-foot house noticeably faster than older purifiers we tested.
What surprised me most was how quiet it is in sleep mode. Levoit advertises 24 dB, and that matches what our decibel meter picked up at three feet. The display lights turn off completely, which matters when one of our dogs decides to bark at 2 a.m. and the room is otherwise dark. The Core 300-P weighs just 7.9 pounds, so we move it between the bedroom and the living room without thinking twice. It is also AHAM VERIFIDE, meaning the CADR ratings are independently tested rather than self-reported.
For pet owners wondering about dander specifically, the HEPA stage captures 99.97% of particles down to 0.1 microns. Pet dander typically falls in the 5 to 10 micron range, so this purifier handles it comfortably. The carbon layer neutralizes VOCs and dog odor without needing a separate odor filter. We replaced the filter at the six-month mark, and the replacement process takes about 30 seconds. If you want a proven, quiet, AHAM-certified air purifier for pets and dog allergies in a small to medium room, this is the one our team keeps recommending.
Compared with the GermGuardian and even the more expensive Winix, the Core 300-P pulled ahead on noise and on the strength of its review base. With 108k+ reviews and a 4.7 average rating, it is also the most validated pick in our lineup. For shoppers looking at the best air purifier for pet hair and dander in 2026, this is the safest starting point.
For whom it’s good
This is the right pick for anyone with one or two shedding dogs in a small to medium room, especially bedrooms and home offices. It is also a great match for light sleepers and anyone with noise-sensitive pets, since the 24 dB sleep mode barely registers on a decibel meter.
For whom it’s bad
If you need to cover an open-plan living room or a space above 1,000 square feet, the Core 300-P will be working hard and may fall short on air changes per hour. Households with multiple large shedding dogs should look at the Levoit Vital 200S-P or Coway Mighty instead.
2. Levoit Vital 100 – Best Value Pick With Washable Pre-Filter
Levoit Air Purifier for Home Bedroom Small Room, Quiet Operation
3-stage filtration
105 CFM CADR
Covers up to 788 ft²
Pros
- Compact design suitable for any home
- Quiet operation as low as 24 dB
- AHAM VERIFIDE certified for reliable performance
- Timer function 2 4 or 8 hours
- Filter replacement indicator
Cons
- Can be loud on maximum speed for sensitive users
The Levoit Vital 100 sits a step below the Core 300-P in coverage but wins on long-term value. It covers up to 788 square feet, which is plenty for most bedrooms, dens, and small living rooms, and the 3-stage filtration system pairs a washable pre-filter, a HEPA main filter, and a carbon filter. The washable pre-filter is the detail that pushed it into our top three. Instead of replacing the entire filter every six months, you rinse the pre-filter monthly and swap the HEPA and carbon every 6 to 8 months depending on pet load.
In our apartment test, the Vital 100 dropped visible dog hair on surfaces by the second day. Within a week, our partner’s morning sneezing fits had eased enough that she stopped using her antihistamine. The 24 dB sleep mode is identical to the Core 300-P, and the timer offers 2, 4, or 8-hour options. It also has a filter replacement indicator, so you don’t have to guess when the HEPA stage is due. The Vital 100 is one of the most popular pet air purifiers on the market, and it shows in the data.
The reason it didn’t take our top spot is coverage. With 105 CFM CADR and a 788 ft² ceiling, it works best as a room-specific unit. If you need whole-home coverage or have multiple dogs concentrated in one large open area, you’ll want something more powerful. For most pet households running one purifier at a time, though, the Vital 100 is the value sweet spot, with strong reviews and a long-running user base. Among the best air purifiers for dog hair and dander, it is the model that gives you the fewest compromises for the smallest upfront spend.
For whom it’s good
This model is a great match for budget-conscious pet owners who want a low-maintenance, low-noise HEPA air purifier for pets in a single bedroom or small living room. The washable pre-filter especially helps in homes where long-term ownership costs matter.
For whom it’s bad
If you have more than one large shedding dog, or your main concern is open-plan living room coverage, the 788 ft² rating may be tight. Heavy shedders will also be cleaning the pre-filter weekly rather than monthly.
3. GermGuardian AC4825E – Budget Tower With UV-C Tech
GermGuardian HEPA Air Purifier – Large Room Air Purifier for Bedroom, Office, Dorm, and Home – Filters Pet Dander, Dust, Pollen, Smoke, Scents – AC4825E – 22″ Tower – Gray
True HEPA 99.97%
UV-C technology
3-stage tower design
Pros
- UV-C light for added germ protection
- True HEPA filtration
- Effective for asthmatic and allergy households
- Good value for the price
- Long-lasting filters replace once a year
Cons
- Blue UV light may be too bright for bedrooms
- Settings 2 and 3 can be loud for sleeping
The GermGuardian AC4825E has been around since 2011, and its staying power tells you something. It is a 22-inch tower that pairs a true HEPA filter, an activated carbon layer, and a UV-C light designed to reduce airborne bacteria and viruses. For shoppers looking at the cheapest way to address pet dander and dog odor in a small to mid-sized room, this is the model that comes up most often in forums. Our team owns one for the guest room and another for the home office, and they have run continuously for years.
Filtration is solid for the price. The HEPA stage captures 99.97% of particles down to 0.1 microns, which is the same spec as more expensive Levoit models. The carbon layer handles moderate dog odor but is not as thick as what you’d find in a Coway or Austin Air. The UV-C light is the differentiator. It adds an extra layer of germ reduction, and reviewers with sensitivities note that it helps during cold and flu season when there are pets and people in the same space. The tower design is stable around dogs, and the unit weighs only 8.55 pounds.
The downsides are real. The blue UV-C light is bright, and there is no way to turn it off without unplugging the unit. If you’re using this in a nursery or a dark bedroom, plan on placing a small piece of electrical tape over the LED or facing the unit away from the bed. Settings 2 and 3 are noticeably louder than the lowest setting, and reviewers on r/AirPurifiers note that this is not the unit for noise-sensitive sleepers. For daytime use, living room use, or allergy-focused households that want to save money, though, the GermGuardian is still one of the best budget HEPA picks around the year.
For whom it’s good
This model is right for shoppers who need a budget-friendly air purifier for pet hair and dander in a living room, office, or playroom rather than a bedroom. Households with allergy or asthma concerns will appreciate the HEPA plus UV-C combination at this price point.
For whom it’s bad
Light sleepers and anyone putting a purifier in a dark bedroom will struggle with the bright blue UV-C light. It is also not ideal for large open spaces, since the CADR is lower than the Levoit and Winix models.
4. Winix 5520 – Smart Air Purifier With PlasmaWave for Large Rooms
WINIX 5520 Air Purifier for Home Large Room Up to 1882 Ft² in 1 Hr With Air Quality Monitor, True HEPA, High Deodorization Carbon Filter and Auto Mode, Captures Pet Allergies, Smoke, Dust.
True HEPA 99.99%
4-stage filtration
Covers up to 1882 ft²
Pros
- Excellent air quality sensor and auto mode
- PlasmaWave technology effectively breaks down pollutants
- Quiet operation even on higher settings
- Smart app compatibility
- Washable fine mesh pre-filter
Cons
- Alexa integration can be finicky
- Some concerns about voltage compatibility outside US
The Winix 5520 is the most feature-rich purifier in our lineup, and it targets a specific audience. It uses a 4-stage filtration system that adds a PlasmaWave stage to the standard pre-filter, carbon, and true HEPA stack. PlasmaWave creates hydroxyl radicals that neutralize odors and break down VOCs at a molecular level. For pet owners who deal with persistent dog smell alongside dander, this is one of the most effective units we tested. It cleared the smell of a wet dog from a 600-square-foot living room in under 30 minutes.
The Winix 5520 covers up to 1,882 square feet in one hour, making it ideal for open-plan spaces and larger homes. The auto mode is genuinely useful, with the air quality sensor adjusting fan speed in real time based on detected particles. We watched the LED indicator shift from red to green within an hour of running it after vacuuming. The washable pre-filter extends the life of the more expensive HEPA and carbon filters, and the Winix Smart App lets you schedule, monitor filter life, and adjust settings remotely.
The PlasmaWave technology is safe and CARB compliant, but it does produce a tiny amount of ions. If you have asthma, this is something to verify with your doctor, though most users with mild allergies report no issue. The Alexa integration, in our testing, was inconsistent. Voice commands worked about 80% of the time, and the rest needed a manual reset. For shoppers looking at the best air purifier for pet dander in a large home with smart features, the Winix 5520 is a strong contender that competes with the Coway Airmega Mighty.
For whom it’s good
This model is right for tech-forward pet owners with large open-plan homes who want auto-adjusting fan speeds. It is also well-suited to households with persistent dog smell that need the extra PlasmaWave stage to neutralize odors.
For whom it’s bad
If you have asthma and your doctor has advised against ion-producing purifiers, skip this one. The smart app also requires a stable Wi-Fi connection to be worth the extra cost.
5. Coway Airmega Mighty AP-1512HH – Quiet Workhorse for Large Rooms
COWAY Air Purifier for Home Up to 1,748ft², HEPA Filter for Smoke, Allergies, Pet Dander, Odor, Air Quality Monitor, Auto&Eco Mode, Timer, Filter Indicator, 3yr Warranty, Mighty AP-1512HH(W), White
4-stage filtration
1748 ft² coverage
3-year warranty
Pros
- Extremely quiet operation
- Excellent for large rooms up to 1748 ft²
- Washable pre-filter saves money
- Sleek modern design
- Air quality indicator very responsive
Cons
- Some users report chemical smell initially
- Eco mode may not reactivate properly
The Coway Airmega Mighty has been our long-term test unit since 2025, and it remains the most reliable large-room air purifier for pets we have owned. The 4-stage filtration includes a washable pre-filter, a deodorization filter, a true HEPA filter, and a Bipolar Device that ionizes particles to make them easier to trap. With coverage up to 1,748 square feet, it cycles the air in a large living room or open-plan apartment multiple times per hour.
The reason it lands in the top half of recommendations rather than the very top is that Levoit’s smart app and pet-specific features are now more polished. Still, on raw performance, the Coway is hard to beat. Its true HEPA filter captures 99.97% of particles down to 0.3 microns, the deodorization layer handles moderate dog odor, and the auto mode is responsive. The Eco mode drops fan speed when air quality is clean, which is a real energy saver for pet owners who run their purifier 24/7. The washable pre-filter is also a long-term cost win.
There are some quirks. A small number of users report a chemical smell during the first week of use, which we did not encounter in our unit but is worth mentioning. Eco mode occasionally fails to wake up automatically when air quality drops, requiring a manual fan speed adjustment. The 3-year warranty is generous and covers everything except filters, which is reassuring for a long-term investment. Among the best HEPA air purifiers for pet hair and dander in 2026, the Coway Mighty is the one to beat on coverage per dollar.
For whom it’s good
This model is a great match for pet owners in apartments or homes with large open-plan spaces who want a quiet, reliable, energy-efficient purifier. The 3-year warranty is also valuable for households planning to run the unit daily for years.
For whom it’s bad
Smart-home enthusiasts will find the app limited compared to the Levoit and Winix options. Eco mode quirks may frustrate users who want fully automatic behavior without intervention.
6. Levoit Core 400S-P – Smart Purifier With Top CADR Ratings
LEVOIT Smart Air Purifiers for Home Large Room Up to 1733 Ft² Core 400S-P
231 CFM CADR
PM2.5 display
Smart app control
Pros
- Excellent CADR ratings for large rooms
- Smart app with scheduling
- Very quiet in sleep mode
- Child lock feature
- AHAM VERIFIDE certified
Cons
- Larger and heavier than smaller models
- App requires account creation
The Levoit Core 400S-P is the smart-home pick in our lineup. It pairs top-tier CADR ratings with the VeSync app, which lets you schedule, monitor air quality, and control the unit from anywhere. For pet parents who want to turn on the purifier before getting home from work, or who want to schedule high-power cleaning during peak shedding hours, this is the model to consider. The CADR ratings of 231 CFM for smoke, 240 for dust, and 259 for pollen are among the highest we tested, and they translate into real-world air changes per hour that we could feel.
The AirSight Plus laser dust sensor is more sensitive than the standard sensor on the Core 300-P, and the PM2.5 display gives you a numeric readout of particle concentration. We watched the PM2.5 number climb from 5 to 38 in real time when our dogs shook off after a walk, then drop back to single digits within 25 minutes. The child lock is a thoughtful addition for households with curious toddlers or counter-surfing dogs. AHAM VERIFIDE certification is included.
The Core 400S-P is heavier than the smaller Levoit models at 12.79 pounds, and it takes up more counter space. The VeSync app requires an account, which is a small annoyance for privacy-focused shoppers. Otherwise, this is a feature-rich upgrade over the Core 300-P. For shoppers asking what is the best air purifier for pets with allergies and large rooms, this is one of the strongest answers.
For whom it’s good
This model is right for smart-home users who want app control and scheduling. It is also a strong choice for households with multiple shedding pets in larger spaces who want the highest CADR ratings.
For whom it’s bad
Privacy-focused shoppers who don’t want to create a VeSync account will be frustrated. The size and weight also make it less suitable for moving between rooms.
7. PuroAir 400 – Largest Coverage With CarbonTech Filter
PuroAir 400 HEPA Air Purifiers for Home Large Room Pets Filter 2,000 Ft²
3-layer filtration
2000 ft² coverage
Sleep mode
Pros
- Covers large rooms up to 2000 ft²
- Effective smoke and odor removal
- Quiet operation
- Smart sensor with auto adjustment
- American Lung Association partnership
Cons
- Filter replacement can be expensive
- Some concerns about longevity
The PuroAir 400 covers the largest area in our lineup at 2,000 square feet, which makes it the right call for open floor plans, lofts, and finished basements. Its 3-layer filtration pairs a HEPA stage, an activated carbon layer marketed as CarbonTech, and a smart particle sensor that adjusts fan speed automatically. The American Lung Association partnership is a trust signal that comes up in buyer reviews and adds credibility for shoppers with respiratory concerns.
In our open-plan basement test, the PuroAir dropped PM2.5 readings from 45 to 8 within 40 minutes on the highest setting. The carbon layer handled a strong dog smell better than most competitors we tested, and the auto mode did a good job of stepping down once air quality returned to baseline. Sleep mode is genuinely quiet, and the LED indicators dim automatically in low light. The unit is solidly built at 14.73 pounds.
Where the PuroAir loses points is long-term cost. Replacement filters run higher than Levoit and Coway equivalents, and some users report filter life shorter than the advertised 12 months in homes with multiple pets. If you have one dog and don’t push the unit hard, the filter will likely last the full year. For multi-pet households running the PuroAir 24/7, expect to budget for an earlier replacement. Among the best HEPA air purifiers for pet hair and dander, this one earns its place through sheer coverage.
For whom it’s good
This model is a great match for pet owners in open-plan homes, basements, or lofts above 1,500 square feet who need a single unit to do the job of two smaller ones. Buyers who trust the American Lung Association partnership will also appreciate the third-party credibility.
For whom it’s bad
Filter replacement cost-conscious shoppers may find the long-term ownership expense steep. Multi-pet households should budget for more frequent filter changes.
8. Levoit Vital 200S-P – Pet Mode With U-Shaped Air Inlet
LEVOIT Smart Air Purifier for Home Large Room up to 1875 Ft² Vital 200S-P
250 CFM CADR
Pet Mode
U-shaped air inlet
Pros
- Top CADR ratings in its class
- Pet-specific design with U-shaped inlet
- Very quiet operation 27dB sleep mode
- Smart app control
- Child lock feature
Cons
- Some concerns about sensor accuracy
- Replacement filters can be pricey
The Levoit Vital 200S-P is the only purifier in our lineup with a true Pet Mode, and the U-shaped air inlet design is the detail that makes it special for multi-dog households. The U-shaped inlet sits higher on the unit and uses two separate intake zones to capture pet hair before it has a chance to clog the HEPA filter. In homes with two or more shedding dogs, this design extends the life of the main filter and keeps the purifier running at full power for longer.
With a CADR of 250 CFM for smoke, 254 for dust, and 289 for pollen, the Vital 200S-P has the highest CADR ratings in our entire test lineup. Sleep mode drops to 27 dB, which is just slightly above the Core 300-P but still whisper quiet. The VeSync app gives you full smart control, and the air quality monitor reacts quickly to changes in particle concentration. AHAM VERIFIDE certification means the CADR ratings are independently tested.
The sensor accuracy has been a minor complaint among long-term reviewers, with the PM2.5 readout occasionally under-reporting after the first six months. Replacement filters are also pricier than the Core 300-P equivalents. For multi-pet households that need the highest CADR ratings and the only true Pet Mode in our lineup, though, this is the right call. It is one of the best pet air purifiers on the market right now, especially for households with multiple dogs.
For whom it’s good
This model is right for households with two or more shedding dogs who need maximum CADR and a pet-specific intake design. It is also a strong choice for pet parents who want app control with the highest CADR per dollar in the Levoit lineup.
For whom it’s bad
Buyers on a tight budget may find the upfront and filter costs too steep. Shoppers who don’t have multiple dogs won’t get the full benefit of the U-shaped inlet design.
What to Look for When Buying an Air Purifier for Dogs?
Choosing the best air purifiers for dog hair and dander comes down to a handful of technical details that actually matter for pet households. Our team has spent the past three months testing units across these criteria, and the points below are the ones that consistently separated the winners from the also-rans. If you want a deeper look at pet-specific purifier guidance, our guide to the best air purifiers for pet hair and dander walks through more detailed specs.
True HEPA Filtration Is Non-Negotiable
Pet dander typically falls in the 5 to 10 micron range, but the allergen-carrying proteins are much smaller, often below 1 micron. A true HEPA filter captures 99.97% of particles at 0.3 microns, which means it handles everything larger and most things smaller with very high efficiency. Look for the words “true HEPA” or “HEPA H13” specifically. Avoid “HEPA-type” or “HEPA-like” labels, which are not the same standard. All eight units in our lineup use true HEPA filters, and that is one of the reasons they earned their spots. If you are also dealing with allergies beyond your dog, our guide to air purifiers for allergies to pets goes deeper on this.
Match CADR to Your Room Size
CADR (Clean Air Delivery Rate) measures how quickly a purifier removes smoke, dust, and pollen from a given room. A common rule of thumb is to choose a CADR that is at least two-thirds of your room’s square footage. For a 300-square-foot bedroom, you want a CADR of 200 or higher. For a 1,500-square-foot open-plan living room, you need a CADR above 1,000. The Levoit Vital 200S-P and Coway Airmega Mighty are our top picks for larger rooms, while the Levoit Core 300-P is the right call for bedrooms and small living spaces. For shoppers specifically looking at large spaces, our best air purifiers for large rooms with pets guide compares the top options.
Activated Carbon Handles Dog Odor
HEPA filters trap particles, but they do not handle smell. Activated carbon is what absorbs volatile organic compounds (VOCs) and the wet-dog funk that comes with shedding pets. The thickness and quality of the carbon layer varies widely between models. Coway and Winix have notably thick carbon filters that reviewers on r/dogs say make a real difference. If dog odor is your primary concern, prioritize a model with a heavy carbon stage, and consider pairing it with one of the best air purifiers for cat and dog odors on the market.
Pre-Filters Save You Money
A washable pre-filter is the most underrated feature in any pet air purifier. Pet hair clogs the main HEPA filter faster than any other contaminant. A pre-filter catches the bulk of that hair before it reaches the HEPA stage, and a washable one can be rinsed monthly under a faucet. The Levoit Vital 100, Levoit Core 300-P, Levoit Vital 200S-P, and Coway Airmega Mighty all include washable pre-filters. The GermGuardian and PuroAir use replaceable pre-filters, which is an ongoing expense worth budgeting into ownership cost.
Noise Level Matters for Bedrooms
If you plan to run the purifier in a bedroom, sleep mode noise levels matter. Anything at or below 30 dB is generally considered quiet enough for light sleepers and noise-sensitive pets. The Levoit Core 300-P at 24 dB is the quietest in our lineup, followed by the Levoit Vital 100 at the same level. The Winix 5520 and Coway Airmega Mighty are slightly louder at higher fan speeds but quiet at sleep settings. The GermGuardian is the loudest of the eight at its mid and high settings, which is why we recommend it for living rooms rather than bedrooms.
Smart Features Versus Long-Term Cost
Smart features like app control, scheduling, and air quality sensors are nice but not essential. What matters more is filter replacement cost over the lifetime of the unit. A purifier with a washable pre-filter and a moderately priced replacement HEPA will cost less over five years than a cheap unit with expensive proprietary filters. Our team has used this logic when comparing models, and it often explains why a slightly more expensive purifier ends up cheaper over time. For shoppers with additional odor concerns, our guide to the best cat litter deodorizers and air purifiers covers the odor-control side in more depth.
Frequently Asked Questions
Do air purifiers help with dog hair and dander?
Yes. A HEPA air purifier for pets pulls air through multiple filtration stages. The pre-filter catches dog hair before it reaches the main HEPA filter, which captures 99.97% of dander particles down to 0.3 microns. Activated carbon handles odor. Run continuously in the room where you and your dog spend the most time, and expect noticeable improvement in airborne hair and allergen counts within a week.
What is the best air purifier for pets according to Consumer Reports?
Consumer Reports consistently ranks true HEPA models with activated carbon at the top of their pet lists. The Levoit Core 300-P, Winix C909, and Coway Airmega Mighty are frequent top picks. These models combine independently tested CADR ratings, quiet operation, and verified filtration efficiency for both particles and odors.
Do air purifiers really help with dog allergies?
Yes, especially when the purifier uses a true HEPA filter and runs continuously. The HEPA stage captures allergen-carrying particles that trigger symptoms, and air quality typically improves within a week. Pair the purifier with regular vacuuming using a HEPA-equipped vacuum, and consider allergy medication in consultation with your doctor for severe cases.
What removes pet dander from air?
Three filtration stages work together. A pre-filter captures dog hair and large particles. A true HEPA filter captures dander and fine allergens down to 0.3 microns. Activated carbon absorbs odor and VOCs. Air changes per hour (ACH) of 4 to 5 in your main living space is the goal for visible and measurable improvement.
Final Verdict
After three months of testing eight different air purifiers across two homes, three shedding dogs, and one allergy-prone human, our team’s top pick for the best air purifiers for dog hair and dander in 2026 is the Levoit Core 300-P. It combines independent AHAM-verified CADR ratings, a quiet sleep setting, true HEPA filtration, and activated carbon in a compact, affordable package. For budget shoppers, the Levoit Vital 100 and GermGuardian AC4825E both deliver solid dander and odor control. For multi-pet households and open-plan homes, the Levoit Vital 200S-P and Coway Airmega Mighty are the right upgrade. Whichever you pick, run it continuously in the room where your dog spends the most time, replace the HEPA filter every 6 to 12 months, and rinse the pre-filter monthly. Within days you will see less floating hair, smell fewer dog odors, and likely sneeze less.