HEPA Filters

High-Efficiency Particulate Arresting filters – or HEPA filters – are known world-wide for their unique filtration process.

HEPA filters are recommended for asthma and allergy sufferers. They have a three-stage filtration system that removes aggravating particles from the air such as dust, smoke, pollen, animal dander, and chemical odours and gases.

HEPA’s three-stage filtration process involves:
• a pre-filter that captures large particles such as dust
• a second layer that traps 99.97% of particles 0.3 microns – approximately 0.000012 inches – and larger (dust, pollen, bacteria, animal dander, attached viruses, cigarette smoke and more)
• the removal of odours and hazardous chemical by-products by a Volatile Organic Compounds (VOC) filter

Contact us at Noll for information on how we can help you install a HEPA system, or if you’re interested in service or maintenance for your existing system.