Do Air Purifiers Work for Pet Allergies? Let’s Find Out

The joy of having a furry companion can be unparalleled for pet lovers. However, this joy can quickly become a nightmare for those who suffer from pet allergies. Air purifiers are a popular solution for many people looking to reduce allergens in their homes, but do they work for pet allergies?

Yes, air purifiers can effectively reduce pet allergens in the air, especially those equipped with HEPA filters, which can capture tiny particles such as pet dander, pollen, and dust mites. However, it’s important to note that air purifiers are not a cure for pet allergies and should be used in conjunction with other management strategies.

In this blog post, we’ll explore the relationship between air purifiers and pet allergies and help determine if an air purifier is a good investment for pet owners.

How Pet Allergies Develop?

Pet allergies occur when the immune system overreacts to proteins found in animals’ dander, saliva, and urine. When people with pet allergies come into contact with these proteins, their immune system perceives them as harmful substances and produces antibodies to attack them. It triggers the release of histamine and other chemicals in the body, causing allergy symptoms such as sneezing, runny nose, watery eyes, and skin rashes. 

While any animal can cause an allergic reaction, cats and dogs are the most common culprits. They produce more dander than other pets, and their allergens are small enough to be easily inhaled into the lungs.

Some people may only experience mild symptoms when exposed to pets, while others may experience severe allergic reactions that require medical attention. Therefore, it is essential to understand the causes of pet allergies and take steps to reduce allergen exposure for those who are sensitive to them.

Do Air Purifiers Work for Pet Allergies?

If you suffer from pet allergies, you may have considered investing in an air purifier to help alleviate your symptoms. The good news is that air purifiers can effectively reduce pet allergens in your home. These devices draw in air and pass it through a filter that traps pollutants such as pet dander, dust, and pollen. The clean air is then released back into the room, reducing the concentration of allergens in the air. 

However, the effectiveness of an air purifier in reducing pet allergens in your home will depend on several factors, including the type of air purifier you choose, the size of your room, and the severity of allergies. HEPA air filters are the most effective at removing pet dander and other small particles from the air. They can easily capture pet hair floating in your room.

To maximize the benefits of your air purifier, place it in a room where you spend the most time, and run it continuously. Air purifiers alone may not completely eliminate pet allergens from your home. Using them with other preventative measures can create a more allergy-friendly environment for you and your furry friend.

Choose the Right Air Purifier

Choosing the right air purifier is crucial for managing pet allergies. Not all air purifiers are created equal; some are better suited for specific allergens than others. Here are some features to consider when choosing an air purifier for pet allergy symptoms:

  • HEPA Filter: A HEPA filter is a high-efficiency particulate air filter that can capture particles as small as 0.3 microns. Pet allergens like pet dander, hair, and dust are usually larger than 0.3 microns, so a HEPA filter can effectively trap them.

  • Activated Carbon Filter: A filter with active carbon can remove odors and volatile organic compounds (VOCs) from the air. These filters can be handy if you suffer from pet odors in your home.

  • CADR Rating: The Clean Air Delivery Rate (CADR) is a rating system that measures the effectiveness of an air purifier in removing smoke, pollen, and dust from the air. Look for a unit with a CADR rating appropriate for your room size. 

  • Air Exchange Rate: The air exchange rate refers to the number of times an air purifier can circulate and clean the air in a room per hour. A higher air exchange rate means the air in the room is cleaned more often, which can be helpful for people with pet allergies.

  • Size of the Air Purifier: The size of the air purifier should be appropriate for the room where it will be used. A small air purifier won’t be effective in a large room, and a large air purifier may be overkill for a small room.

  • Noise Level: Some air purifiers can be noisy, which can be problematic if you use them in a bedroom. Look for a unit that operates quietly or has a sleep mode.

Other Methods to Get Rid of Pet Allergies

 Frequently Clean Your Home

  • Clean the carpets, rugs, and furniture using a HEPA vacuum cleaner to trap pet dander and other allergens.
  • Use microfiber cloths to dust surfaces, as they capture more allergens than traditional cleaning cloths.
  • Wash bedding and curtains regularly to limit exposure to pet allergens.

Groom Your Furry Friends Regularly

  • Brushing your pet can help remove loose fur and dander, preventing it from spreading around your home.
  • If you need to bathe your pet, make sure to use a pet-specific shampoo that is gentle on their skin and coat. Avoid using human shampoos or harsh chemicals, which can irritate your pet’s skin and worsen allergy.
  • Keep your pet’s living area clean and free of debris.

Removing Carpets and Drapes

  • Consider removing carpets and replacing them with hardwood, tile, or linoleum flooring, as carpets trap pet dander and other allergens.
  • Replace heavy drapes with washable curtains or blinds, as drapes can also trap pet dander.

Keep Your Home Well-Ventilated

  • Open windows and use exhaust fans to increase ventilation in your home and reduce the concentration of pet allergens in the air.
  • Consider installing an air exchange system to provide continuous fresh air and reduce the concentration of indoor allergens.

Use Natural Cleaning Products

  • Always use natural cleaning products instead of harsh chemicals to reduce exposure to irritants that can aggravate pet allergies.
  • Look for cleaning products labeled as hypoallergenic or specifically designed for people with allergies.


Air purifiers can be an effective tool for filtering pet dander and other airborne pollutants from the air. Still, it’s crucial to choose a high-quality air purifier with a HEPA filter and to maintain and replace the filter regularly. In addition to using these air-cleaning devices, adopting other strategies for reducing pet allergens in your home is essential. 

Remember, you must be patient and persistent when dealing with pet allergies. Finding the best strategies for you and your pet may take some time, but with a little effort, you can create a comfortable and allergy-free living space.


Do air purifiers help with pet hair and dander?

Yes, air purifiers can help in reducing pet dander and hair. Most of these air cleaners come with HEPA filters, which can effectively capture and remove pet hair, dander, and other airborne particles.

Should I get a home air purifier if I have dog and cat allergies?

An air purifier can be beneficial if you suffer from dog or cat allergies. It can help reduce pet dander, hair, and other airborne allergens and provide a healthy living environment.

Does pet dander float in the air?

Yes, pet dander can quickly become airborne and circulate indoors. Once airborne, pet dander can remain suspended for long periods, leading to allergic reactions in sensitive people. 

How do I know if an air purifier has improved indoor air quality?

Most air purifiers come with an air quality sensor light that measures the concentration of particles in the air, such as dust, allergens, and pollutants. After running the air purifier for some time, you can check the sensor to see if the air quality has improved.

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Ellie Sanders

Ellie is our talented content writer. With her exceptional attention to detail and unwavering commitment to thorough research, Ellie ensures that our articles and guides not only meet but exceed the highest standards of accuracy. She researches each topic in depth, ensuring that the content is well-researched and easily understandable.