Air Purifier for Pet Urine Odor Review

Best Air Purifier for Pet Urine Odors

The odors from your pet are usually caused by urine, either from the litter tray or because they’ve had an accident outside the litter tray somewhere.

This releases volatile organic compounds (VOC) into the air, and it’s these compounds that cause the odor. Unfortunately, they can linger in your home for a long time. Opening a window may dilute the VOC concentration to reduce the smell, but it won’t wholly banish it.

Air Purifier for Pet Urine Odor Review IMG_7321

Instead, you need an air purifier – but which one? There are many different types, and only the best air purifiers for pet urine odors will be adequately effective. In addition, some air purifiers with a HEPA filter can reduce the causes of allergens, including pet dander. Still, urine needs a combination of other technologies, including a carbon filter, to properly tackle the issue.

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Things To Consider When Choosing an Air Purifier for Pet Odors

HEPA Filter

A HEPA (High-Efficiency Particulate Air) filter is a mechanical filter that helps trap airborne particles, removing loose pet fur, dust, and dust mites, pollen, and bacteria from the air. They’re trendy in air purifiers, premium vacuum cleaners, and other tools designed to clean your home.

However, they only capture molecules with a minimum size of 0.3 microns. The VOCs that cause odors from your pet are smaller than this so that a HEPA filter won’t prevent most odors. However, it’s not something to completely disregard as it will still be highly effective against some other pollutants and allergens. Still, if the odor is your principal issue, you’ll need a purifier with another technology.

For a product to qualify as a true HEPA filter, it must be able to capture 99.97% of 0.3-micron molecules. Suppose it isn’t a true HEPA air purifier. In that case, that means the filter is designed to work like a HEPA filter. Still, it isn’t tested to that efficiency level. Therefore, it is not worth buying even for other purposes like fighting allergies or causes of asthma.

Carbon Filter

An active carbon filter is one of the better options for tackling pet odors. Carbon filters use activated charcoal to capture the finer molecules in the air, including VOCs, removing them from the air you breathe so that you can’t smell them anymore.

Air Purifier for Pet Urine Odor Review IMG_7322

The problem is that a charcoal filter has a limited lifespan, so it needs to be replaced regularly to keep working. This is because it only has enough space to capture a finite number of particles. However, combined with other technologies, a carbon filter can last long. Still, if you rely purely on carbon alone, it will need a new filter often.

Ozone Generator

Ozone generators release ozone into the air to break down the VOC molecules. However, ozone mainly masks the smell of pet odors instead and doesn’t effectively trap or get rid of them. It might seem adequate, but ultimately you’re not purifying the air, just adding another foreign agent.

The Environmental Protection Agency recommends against using ozone generators. There are better ways to purify the air and remove those VOCs that cause odors in your home.


The purpose of an air purifier is to trap and break down the molecules in the air, causing odor. Some ‘air cleaners’ don’t trap the particles but instead try to mask the smell with a more fresh-air aroma, which ultimately won’t work. Your cat’s litter tray isn’t going anywhere, so you will likely always have to deal with VOCs that cause odors. An ozone generator won’t be effective over time because the VOC concentration will only get stronger.

The only way to properly tackle odors caused by pet urine is to actively break them down and remove them, which is what a more advanced and targeted air purifier can do. Bring the VOC levels in the air in your home down to a level that you (and, more importantly, guests who aren’t used to your home) won’t notice.

Noise Level

It’s a lesser concern, but bear in mind the noise level of the air filter. If it’s loud, it may intimidate your cat, especially if it’s set up near the litter tray. Finding a low-noise filter can help keep the room odor-free without scaring your cat into avoiding its litter box.

Placement of a Purrified Air Filter

The placement of your air purifier is essential because the VOCs in the air that causes odors will spread. So it’s good to place the air purifier as close to the source of the problem as possible – usually, the litter box. However, suppose you’ve identified where your cat has had an accident outside their litter tray. In that case, you could also move the purifier there for a little while.

You want the air purifier as close to the litter box as your cat is comfortable and near the vent where litter is collected. Some, like the Purrified Air Litter Box, are designed to be placed on top of many covered litter trays and can adapt to flat or domed surfaces. However, if you use a Litter Robot that collects used litter in the base, you should place it near the bottom vents, as the odor is more likely to escape.

Purrified Air Litter Box Air Filter Unboxing

By being placed as close to the problem as possible, the molecules are trapped immediately and unable to transfer around your home.


The capacity of your chosen air purifier will be affected by its features, how big an area it is designed to cover, and the type of filter it uses.


Air purifiers work by using a fan to drag air through the filter. Some air purifiers have a fan that has an adjustable speed. If you decide that you want the fan to work faster, it will drag more air through, which will help to trap more molecules.

This will also then mean you burn through the filter faster. The actual capacity isn’t affected, but it does mean you may need to replace the filter sooner. It’s best to try the purifier on the lowest setting. If that works and you find the air quality has improved, then you don’t need to change the filter as often. And then, if the odor removal hasn’t completely worked, you can change the fan speeds to suit.

Some purifiers have different modes too. For example, the auto mode can switch on the purifier only when the air quality sensor detects germs, mold spores, or other pollutants in the air, keeping it in sleep mode at other times to save energy. Unfortunately, these intelligent sensors are only found in high-end, expensive devices.

How to Install the Purrified Air Litter Box Air Filter

Area Covered

Some air purifiers designed for pet urine odors don’t have a specific room capacity. As a result, they’re not designed to be placed in an ample open space and get to work but instead should be positioned near the source of the problem.

Other air purifiers are targeted more at room sizes and aim to clear all the air in the room. The bigger the purifier, the larger the volume of air it can tackle. Because the purifier is more significant, it also tends to have a larger capacity for large rooms. Otherwise, you would need to change the filter too regularly, and the experience becomes annoying.

Check the details of your purifier to see how large a room in square feet is designed for – look for “suitable for rooms measuring” or “coverage area” to find the info. The clean air delivery rate to see how long it’ll take to clear the air in that room is typically shown in sq ft per hour.

Type of Filter

The type of filter used in an air purifier will also impact its capacity. Remember that a carbon filter on its own acts to trap molecules. Therefore, it will generally fill up quite quickly – you could expect to change the filter every 1-2 months.

Purrified Air Litter Box Air Filter

Other air purifiers, like the Purrified Air Litter Box purifier, use multi-stage filtration systems that combine activated carbon with other chemicals. These don’t just trap the molecules but break them down, making them smaller and increasing the filter’s capacity. Expect these to last between 4 and 7 months.

How Long Does It Take an Air Purifier To Clean Pet Smells?

The time needed to clean the pet smells on the type of purifier you use and where you place it. For example, suppose you’ve chosen a room purifier. In that case, the size and speed of the fan will determine how fast the air from the room is drawn in, but remember that VOCs will be replaced while it is working.

Choosing an air purifier designed to live on or near the litter tray will immediately start to capture VOCs before they’ve had the chance to spread. However, they won’t be as effective at removing the existing odors in the air.

The best thing to do is to air out your home as much as possible to remove any stagnant odor molecules. Then the litter box purifier will make an immediate difference. Don’t have the window open while you use the purifier; otherwise, the fan won’t draw in the air effectively.

Where Is the Best Place To Put an Air Purifier To Eliminate Pet Odors Quickly?

To remove pet odors quickly, you must address them at the source. Then, place the purifier close to the litter tray; it almost acts as a pre-filter before the air spreads through your home. That’s as long as it doesn’t cause your kitty to worry, making them stop using their litter tray. It’s essential to find a quiet purifier for that reason.

If the odor lingers after placing an air purifier near the litter box, you might have the wrong source. It may be that your cat has been urinating elsewhere. A black-light is an effective way of identifying any urine stains on the carpet, which you can then clean (and place the purifier near) to remove the smell.

How Often Do You Have To Replace the Air Filters?

How frequently you replace the air filter in a purifier will depend on the design of the filter. Some basic filters will need changing every 1-2 months. Still, much better purifiers that use a mix of technologies for a multi-stage filtration system can last for a lot longer, up to half a year.

You’ll know when the filter needs changing, as the odor will start to return. If you quickly address the issue, then you’ll be able to get your home smelling fresh again.

Some air purifiers will have filter-replacement indicators, letting you know when you need replacement filters.

Purrified Air Cat Odor Filter Product Review


How Do I Get Rid of the Cat Urine Smell in My House?

First, you need to identify the source. If it’s general odors caused by the litter box, consider upgrading to an enclosed tray and using an air purifier. If the aroma doesn’t seem to be coming from the litter tray, you must clean up any accidents.

You can find cat urine around your home using a black light. Once you’ve seen them, you can clean them using a deodorizer (either a bought product or make one yourself using vinegar and baking soda). This should get rid of the odor.

Do Air Purifiers Get Rid of Musty Smells?

Air purifiers can get rid of musty smells in your home. Musty smells are generally caused by dampness or mold in your home, with spores emitting the same VOCs as cat urine. A carbon filter can trap these odors and other foul smells like smoke.

If your home smells musty, you need to investigate the cause, as if it is a fungal issue such as mold, it may be damaging your property and, over time, will cause you health problems.

Will Getting an Air Purifier Help With Pet Urine Smell?

An air purifier with an activated carbon filter will help trap the VOCs that cause urine smells. But, unfortunately, HEPA filters aren’t effective as they don’t trap the small molecules that cause the nasty odor.

The best air purifiers for pet urine use a combination of carbon and other chemicals to break down the odor-causing VOCs.

Are Air Purifiers a Waste of Money?

Air purifiers aren’t a waste of money. They can improve indoor air quality, help reduce odors and allergy symptoms, and prevent viruses. The biggest problem with air purifiers is when someone buys the wrong type of cleaner for their home, rendering it ineffective. Also, someone who suffers from pet allergies will benefit from a HEPA purifier, while pet owners need a carbon-filter purifier.

HEPA filters capture the larger particles that can trigger allergies, like pet hair. Still, the odors from pets are caused by molecules that are too small for a HEPA filter to capture. So if you’ve bought a purifier and can still smell urine, check it using a carbon filter.

If it does, consider replacing the filter and moving the purifier closer to the litter tray. If that doesn’t work, check your home for any signs of cat urine outside the litter tray.

What Are the Disadvantages of an Air Purifier?

There are a few potential disadvantages of an air purifier. First, you shouldn’t use them with the windows open; if you don’t replace the filter promptly, it may release some unwanted molecules into the air.

They also have a running cost – they’re designed to be always-on, in most cases, so check how much power your chosen purifier uses. However, they can be pretty cheap – the Purrified Air Litter Box purifier only costs around $3 a year in energy, depending on electricity prices.

Is a Purifier Good for Pets?

Purrified Air Litter Box Air Filter

An air purifier is excellent for pets and pet owners. They can trap nasties in the air, such as the VOCs from pet urine and any pet dander, which can stop owners suffering from pet allergies or detect unpleasant odors.

Pets benefit from the cleaner air, too – a purifier can make the air they breathe more pleasant, getting rid of particles that can cause cats and other animals to have breathing issues.

Where to Buy the Purrified Air Filter

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Hi, I’m Jenny Dean, creator of Floppycats! Ever since my Aunt got the first Ragdoll cat in our family, I have loved the breed. Inspired by my childhood Ragdoll cat, Rags, I created Floppycats to connect, share and inspire other Ragdoll cat lovers around the world,

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  1. This is the best air filter I’ve ever owned. I’ve been using mine for 4 years now and replace the filter as suggested. I keep the litter box in our small bathroom and there is absolutely NO odor; and we all know how stinky a cat (and sometimes a spouse) can be. I highly recommend this product.

  2. Patti A Johnson says:

    Great info, Jenny honey! Very well done, as usual! TYSVM!

    Big hugs & lots of love & purrs!

    Patti & Miss Pink Sugarbelle 🙂 <3

  3. Sharon olson says:

    Where do I buy this and what kind of purifier do I need to buy?

    1. Where do you buy the Purrified Air filter? There is a section within the post – at the bottom that say, “Where to Buy” and there are options listed there. Did you see them?

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