Commercial UV Air Purifier

What is a Commercial UV Air Purifier?

A Commercial UV Air Purifier uses a powerful airflow and UV-C light to help reduce disease transmission through a process called germicidal irradiation. Germicidal irradiation reduces the reproduction of microorganisms by damaging the DNA/RNA. These systems do not use traditional HEPA filters but instead have pre-filters to catch large particles and purify the air with UV light.

How does a Commercial UV Air Purifier work?

Recommended applications for a Commercial UV Air Purifier

• Schools
• Hospitals
• Medical Clinics
• Nursing Homes
• Day Cares
• Office Spaces
• Virus Testing Centers
• Dental Offices
• Highly Populated Indoor Areas

Features & Benefits of Germ Killer Commercial UV Air Purifier

The Germ Killer UV Air Purifier offers an enhanced design with improved safety and efficiency features. This system was stringently tested both in the Sentry Air Systems’ factory and by a 3rd party lab to ensure UV-C and ozone safety.

General Features

• Adjustable airflow control: 300, 375, or 450 CFM
• Two high-intensity UV-C light bulbs
• Uses UV-C light with shorter wavelengths to improve penetration of microorganisms
• Patent-pending design

Safety Features

• Leakproof UV-C light cabinet with light leak reduction design features (refer to brochure for more information)
• 3rd party tested for UV-C and ozone readings
• A safety interlock prevents the unit from working if the lid or filters are not in place

Efficiency Features

• Dual inlets feature electrostatic cleanable pre-filters to remove large particles reducing particle build-up on the bulbs and reflective surfaces to help prevent a reduction in effectiveness.
• Reflective surfaces in the disinfection area increase irradiance of the UV-C light and improve efficacy.
• A UV light sensor and LED lights indicate if the unit is supplying sufficient UV-C light to improve efficiency and reduce particle build-up on the light bulbs.

 

What is UV Light?

UV light is a type of electromagnetic radiation that falls between visible light and x-rays on the electromagnetic spectrum (Ref. 2). The sun emits UV light making up about 10% of the sun’s light — 95% UV-A and 5% UV-B light (Ref. 2). UV-C light, the 3rd type of UV light, is blocked from the earth’s surface by the ozone layer and water vapor in the earth’s atmosphere (Ref. 2).

Electromagnetic Spectrum _{Ref. 10}

UV Light ABC's

UV-A

UV-B

UV-C

Far-UVC Light

Does UV Light Purify Air?

Yes, UV-C light can purify air — BUT UV-C light must be used accurately to be effective at inactivating microorganisms. Accurate use includes administering the right kind of UV light, the correct dosage, and UV lamps quality control (Ref. 1). Home or consumer portable air cleaners with UV light lack quality control processes and high intensity UV bulbs leading to a lower than the marketed effectiveness. This inefficiency poses a problem because behavior changes dramatically with a “disinfected” object and could lead to an increase in disease transmission (Ref. 3).

A 2020 study conducted by Boston University and Signify Research found that UV light with an irradiance of 0.849 mW/cm2 partially inactivated the coronavirus after 0.8 seconds and reduced it to below detectable levels after 9 seconds for dried and 4 seconds for wet samples (Ref. 8). The Germ Killer uses a UV light that produces an irradiance of 8.0 mW/cm2 or 10 times stronger. This could mean if conditions matched the study, the dry samples could reach below detectable levels in 1/10 of the time or 0.9 seconds, and wet samples after 0.4 seconds. These figures are strictly theoretical and not guaranteed. Please see our brochure for other calculations on effectiveness of the Germ Killer against popular microorganisms.

At the same time, UV light cannot rid air of other contaminants such as dirt, pollen, pet dander, other allergens, and odors. Air purification systems must utilize a mechanical filter such as HEPA filters for capturing airborne particulate and activated carbon filters for odor and chemical fume control (Ref. 9).

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