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What does HEPA stand for?
HEPA stands for High-Efficiency Particulate Air. It is a classification defined by government and industry standards for filters that meet strict particle-capture benchmarks.
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What particle size does a HEPA filter capture?
A true HEPA filter captures at least 99.97% of airborne particles that are 0.3 microns in diameter or larger. This includes dust, pollen, mold spores, pet dander, and many bacteria.
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How does a HEPA filter work?
HEPA filters use a dense mat of randomly arranged fibers. Particles are captured through three main mechanisms: interception (particles following airflow hit a fiber), impaction (larger particles can't follow airflow curves and collide with fibers), and diffusion (very small particles move erratically and are trapped by fibers). Together these make
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Is a 'HEPA-type' or 'HEPA-style' filter the same as a true HEPA filter?
No. 'HEPA-type' or 'HEPA-style' are marketing terms with no standardized performance requirements. Only filters that meet the 99.97% efficiency standard at 0.3 microns qualify as true HEPA filters. Our filters are certified true HEPA.
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What is the MERV rating and how does it relate to HEPA?
MERV (Minimum Efficiency Reporting Value) is a rating scale from 1–16 used mainly for HVAC filters. HEPA filters exceed the MERV scale — they are sometimes described as MERV 17–20. MERV ratings and HEPA are different testing standards, so direct comparison requires care.
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Can HEPA filters remove viruses?
HEPA filters can capture many virus-carrying particles. Viruses often travel attached to larger respiratory droplets or dust particles, which HEPA filters trap effectively. However, standalone HEPA filtration should be considered one layer of a broader air quality strategy.
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Do your filters meet any certifications or standards?
Yes. Our filters are tested and certified to EN 1822 (Europe) and IEST-RP-CC001 (USA) standards, ensuring consistent performance across our product line. We can provide test reports and certificates upon request.
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What is filter efficiency and how is it measured?
Filter efficiency is the percentage of particles a filter removes from the air passing through it. It is measured using standardized challenge aerosols (typically sodium chloride or DOP) at rated airflow in a controlled laboratory setting. Our filters are tested at both rated and reduced airflows.
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What industries use your HEPA filters?
Our filters serve a wide range of sectors including healthcare (operating theaters, cleanrooms, isolation rooms), pharmaceutical manufacturing, semiconductor fabrication, aerospace, commercial HVAC systems, and consumer air purifiers.
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Can I use a HEPA filter in my existing HVAC system?
HEPA filters have higher airflow resistance than standard HVAC filters. Most residential and light commercial systems are not designed to push air through a true HEPA filter. We recommend consulting your HVAC engineer before retrofitting, or using a dedicated HEPA air handling unit.
