ADVANCED FILTRATION FOR HEALTHIER AIR
Castus features a multi-stage filtration system designed to capture and eliminate a wide range of airborne pollutants. With six specialized filters, each targeting specific contaminants like particulate matter, VOCs, bacteria, and viruses, our system ensures optimal air quality for any environment. Experience superior protection and fresher, cleaner air with every breath.

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PRIMARY FILTER
The Castus Washable Primary Filter is the first line of defense against airborne pollutants, capturing larger particles like dust, pet dander, and hair before they reach the deeper filtration layers. Designed for durability and reusability, this filter never needs to be replaced—simply wash and reuse to maintain optimal airflow and extend the life of the other filters. With low maintenance and high efficiency, it ensures cleaner air with minimal upkeep.
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ACTIVATED CARBON FILTER
The Activated Carbon Filter is specially designed to absorb and neutralize odors, gases, and harmful chemicals, ensuring fresher, cleaner air. It effectively removes volatile organic compounds (VOCs) from cleaning products, paints, and furniture, as well as unwanted smells from smoke, cooking, and industrial sources. By trapping airborne pollutants at a molecular level, this filter helps create a healthier and more comfortable indoor environment.
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NANO COPPER FILTER
The Nano Copper Filter provides powerful antibacterial defense by leveraging the natural antimicrobial properties of copper. Copper ions disrupt bacterial cell structures, preventing their survival and reproduction. This highly effective filtration layer helps reduce bacterial buildup within the system, ensuring long-term air quality and a healthier environment with every breath.
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PHOTOCATALYST FILTER
The Photocatalyst Filter uses light-activated titanium dioxide (TiOâ‚‚) technology to break down and neutralize harmful airborne pollutants, volatile organic compounds (VOCs), and odors. When exposed to light, the photocatalytic reaction helps decompose chemical contaminants into harmless byproducts, improving overall air quality. This advanced filtration layer enhances the effectiveness of the purification system, ensuring a cleaner, fresher indoor environment free from harmful gases and pollutants.
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HEPA 13 FILTER
The HEPA 13 filter is a medical-grade filtration system that captures 99.95% of airborne particles as small as 0.1 microns, including dust, pollen, mold spores, and fine pollutants. Its high-efficiency performance helps reduce airborne allergens and irritants, improving overall air quality. Designed for long-lasting reliability, this advanced filter ensures cleaner, fresher air in any environment.
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NANO SILVER FILTER
The Nano Silver Filter is designed to neutralize airborne viruses using advanced silver ion technology. Silver ions effectively break down the protein structure and RNA of viruses, preventing them from spreading through the air. This powerful filtration layer enhances overall air purification, adding an extra level of protection against airborne threats and ensuring cleaner, safer indoor air.
OUR COMMITMENT TO SUSTAINABILITY
At Castus, we believe that clean air shouldn’t come at the cost of a polluted planet. That’s why we are dedicated to sustainable air purification solutions that minimize environmental impact while delivering exceptional performance.
To reduce waste and resource consumption, we have combined multiple filtration technologies into fewer, more efficient filters, ensuring maximum air purification with a lower environmental footprint. The Nano-Photocatalyst and Nano-Crystal Activated Carbon filters have been merged into a single high-performance filter, effectively removing VOCs, odors, and chemical pollutants. Additionally, the HEPA 13, Anti-Bacterial Nano Copper, and Anti-Viral Nano Silver filters have been combined into one, ensuring comprehensive particle filtration, bacterial defense, and virus elimination in a more eco-friendly design.
By optimizing filter efficiency and reducing waste, we make sustainable air purification a reality— helping you breathe easier while protecting the environment.
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What makes Castus different from other air purifiers?Unlike most air purifiers that rely only on HEPA and carbon filters, Castus combines all essential purification technologies in one powerful device, ensuring complete removal of airborne pollutants, viruses, bacteria, VOCs, and allergens. With medical-grade HEPA 13, nanosilver and nanocopper filtration, activated carbon, and UV protection, it offers comprehensive air purification beyond standard solutions. A high CADR of 287 CFM delivers rapid purification for large spaces, while intuitive controls and automatic operation make it effortless to use. Designed for silent and energy-efficient performance, Castus ensures powerful, hands-free air purification with maximum safety and convenience.
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How often do the filters need to be replaced?The frequency of filter replacement depends on usage and air quality. Typically, filters should be checked and replaced every 6-12 months to maintain optimal performance. However, the Castus Air Purifier features a primary, washable filter that never needs replacement, effectively capturing larger particles like dust and hair to extend the lifespan of other filters. To ensure hassle-free maintenance, our service team takes care of all filter replacements and upkeep directly at your facility, keeping your Castus purifier running efficiently with minimal effort on your part.
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What is anion release?Anion release refers to the emission of negatively charged ions that attach to airborne pollutants like dust, pollen, and smoke making the particles heavier and thus easier to remove. Beyond air purification, anions have been linked to improved mood, reduced stress, and better respiratory health, similar to the refreshing effect of being near waterfalls or forests. The Castus Air Purifier allows you to turn anion release on or off based on your preference, ensuring a customized and comfortable air quality experience.
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Does Castus emit ozone?No, Castus is 100% ozone-free and is designed to purify the air safely without producing harmful byproducts. Unlike some air purifiers that rely on ozone-generating technologies, Castus uses a specialized ozone-free UVC lamp, ensuring effective disinfection without releasing ozone into the air.
WANT TO LEARN MORE?
Curious about the advanced technologies that power Castus? Visit our Air Purifier page to explore the innovative purification methods that set us apart.
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If you have any questions or need personalized recommendations, feel free to contact us—we’re happy to help!
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Looking for solutions tailored to your industry? Check out our Solutions & Services page to see how Castus can meet your specific air purification needs.