10 Best Air Purifiers For Allergies 2025 in the United States

The LEVOIT Core P350-P Air Purifier is designed to be highly effective for pet owners and people with allergies. It uses a HEPA filter and an efficient activated carbon filter to neutralize over 92% of pet odors, litter box smells, and other household odors, making it a solid choice for maintaining a fresh and clean home environment. The 3-in-1 filtration system helps reduce allergens such as pet dander, dust, mold, and pollen, which can alleviate symptoms like sneezing, congestion, and itchy eyes.

This purifier can handle rooms up to 219 square feet relatively quickly, cleaning the air in just 12 minutes, which is ideal for most bedrooms or small living areas. The noise level is kept to a minimum, especially in Sleep Mode where it operates at a quiet 24dB, ensuring undisturbed sleep. Safety features like the Pet Lock prevent accidental changes to settings by children or pets, and the device avoids using harmful ions or chemicals, making it safer for pets.

The LEVOIT Core P350-P stands out for its targeted effectiveness against pet-related allergens and odors, making it highly suitable for pet owners and allergy sufferers looking for a user-friendly and efficient air purifier. Replacement filters can be an added expense, and users are advised to use official Levoit filters to maintain optimal performance.

The LEVOIT Air Purifier Core 300-P is a strong contender for anyone looking to reduce allergens in their home, especially those with allergies to pets or pollen. Its HEPA filter is a major advantage, capturing 99.97% of airborne particles as small as 0.3 microns, which includes common allergens. This makes it highly effective for allergy sufferers. With a CADR of 141 CFM, it efficiently purifies spaces up to 1095 square feet, making it suitable for large rooms or open spaces.

One of the standout features is its quiet operation, particularly in Sleep Mode where noise levels drop to a whisper-quiet 24 dB. This makes it ideal for use in bedrooms without disrupting sleep. The design is sleek and modern, allowing it to blend seamlessly into most home decors. Filter replacement is straightforward, and while it is recommended to use genuine Levoit filters for best performance, the cost and frequency of replacements could be a consideration for budget-conscious users. Multiple filter options also allow customization based on specific needs, such as smoke removal or pet dander.

Its performance is commendable, though the reliance on specific brand filters can be a bit limiting, especially if looking for more cost-effective alternatives. The air purifier is energy-efficient, with certifications that ensure safety and reliability. The LEVOIT Core 300-P is an excellent choice for those managing allergies, providing robust filtration, quiet operation, and a large coverage area.

The IQAir Atem X is designed for large spaces, covering up to 3,300 square feet and clearing airborne allergens, viruses, and ultra-fine particles quickly—within 30 minutes. It uses HyperHEPA filters, which are highly effective, removing over 99.9% of viruses, bacteria, and fungi, making it well-suited for people with allergies, asthma, or sensitivities to dust, pollen, and pet dander. Its Clean Air Delivery Rate (CADR) is inferred to be very strong given the rapid cleaning time for such a large room.

The unit is one of the quietest on the market despite its high performance, with a slim design that fits neatly into many rooms without taking up much space. Noise levels are low, which is important if you want it running in a bedroom or living area without disturbance. It also has smart features like real-time air quality monitoring, app control, and automatic fan adjustment, helping to maintain optimal air quality while potentially saving energy. The filters last between 12 to 24 months depending on use, which is quite good, but the replacement cost and subscription program should be considered as ongoing expenses.

The device is made in Germany and carries certifications for energy efficiency and air quality standards. A potential downside is its relatively large size and weight (around 29 pounds), which might make it less portable. Also, while the app and smart functions add convenience, some users might find the setup and technology a bit complex. For anyone needing powerful, reliable air purification for large rooms, especially for allergy relief, the IQAir Atem X offers premium performance with advanced features, though keep in mind the investment in filter replacements over time.