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5 Stages of Professional-Grade Filtration

Every Surgically Clean Air unit combines five complementary technologies—each targeting different contaminant types—to deliver air quality that exceeds operating room standards. This is the same multi-stage system trusted by 55,000+ healthcare facilities across North America.


Trusted by 55,000+ Healthcare Facilities
UL Listed ETL Certified CARB Certified
Ships to US & Canada
Why 5 Stages?

Different Contaminants Require Different Solutions

Indoor air contains particles, gases, odors, and biological contaminants. No single technology addresses all of them. Consumer air purifiers typically offer 2-3 stages—capturing some particles while ignoring gases and pathogens. Our 5-Stage system provides defense in depth: each stage handles what the others cannot.

The Complete System

5-Stage Filtration Breakdown

01
Stage 1

Pre-Filter

The first line of defense captures large particles before they reach the finer filters downstream. This extends the life of your HEPA-Rx and activated carbon filters while handling the heaviest debris load.

Dust Hair Pet Fur Lint Large Debris
Washable & Reusable
02
Stage 2

Activated Carbon

HEPA filters capture particles—but gases pass right through. Activated carbon's millions of microscopic pores trap VOCs, odors, smoke, and chemical gases through adsorption. One gram of activated carbon has over 3,000 square meters of internal surface area.

VOCs Formaldehyde Smoke Odors Chemical Gases
3,000+ m² Surface per gram
03
Stage 3

HEPA-Rx Filter

Standard HEPA captures 99.97% at 0.3 microns. HEPA-Rx is independently tested to capture 99.99% at 0.1 microns—three times smaller. This catches ultrafine particles including virus-carrying aerosols, bacteria, mold spores, and the smallest allergen fragments.

Bacteria Virus Carriers Mold Spores Pollen Fine Allergens
99.99% @ 0.1 microns
04
Stage 4

UV-C Germicidal Chamber

254nm ultraviolet light disrupts the DNA and RNA of pathogens captured on the HEPA-Rx filter—rendering viruses, bacteria, and mold spores unable to replicate. The UV-C process is contained in a sealed internal chamber, safe for continuous operation in occupied spaces.

Viruses Bacteria Mold Spores Pathogens
254nm Germicidal Wavelength
05
Stage 5

Negative Ionization

The final stage releases negative ions that attach to remaining airborne particles, causing them to cluster together. Heavier clustered particles either fall out of the breathing zone or are captured more easily on subsequent air passes through the filtration system.

Ultrafine Particles Static Dust Airborne Debris
Professional vs Consumer

How We Compare

Not all air purifiers are created equal. Here's what separates professional-grade from consumer electronics.

Typical Consumer

Dyson, Molekule, BlueAir

2-3 filtration stages
No UV-C germicidal
Standard HEPA (0.3μm)
1-2 year warranty
Consumer reviews only
See Comparisons
Surgically Clean Air

Professional-Grade

JADE 2.0, COBALT, ONYX

5-Stage filtration
UV-C germicidal (254nm)
HEPA-Rx (0.1μm)
5-year warranty
Clinicians Report® validated
Shop Products

Premium Consumer

IQAir, Austin Air

3-4 filtration stages
No UV-C germicidal
HyperHEPA (0.003μm)
5-10 year warranty
No clinical validation
Compare IQAir
Frequently Asked Questions

Technology Questions

What is 5-Stage air purification?

5-Stage air purification combines five complementary technologies: a pre-filter for large particles, activated carbon for gases and odors, HEPA-Rx filtration for particles down to 0.1 microns, UV-C germicidal light to neutralize pathogens, and negative ionization to cluster remaining airborne particles. Each stage addresses different contaminant types for comprehensive air cleaning.

What is the difference between HEPA and HEPA-Rx filters?

Standard HEPA filters capture 99.97% of particles at 0.3 microns. HEPA-Rx filters in Surgically Clean Air systems are independently tested to capture 99.99% of particles at 0.1 microns—three times smaller. This captures ultrafine particles including virus-carrying aerosols and the smallest allergen fragments.

Is UV-C germicidal light safe in occupied rooms?

Yes, when properly designed. Surgically Clean Air systems contain UV-C light in sealed internal chambers. Air passes through the germicidal zone inside the unit, but no UV exposure reaches room occupants. This allows continuous 24/7 operation in homes, offices, dental practices, and healthcare facilities.

Why do you need activated carbon AND HEPA filtration?

HEPA filters capture particles but cannot remove gases. Activated carbon adsorbs VOCs, odors, smoke, and chemical gases that pass directly through HEPA media. Professional-grade systems combine both technologies because complete air purification requires addressing both particulate and gaseous contaminants.

How is this different from consumer air purifiers?

Consumer air purifiers typically offer 2-3 filtration stages without UV-C germicidal capability. They are designed for residential duty cycles (8-12 hours daily) with 1-2 year warranties. Professional-grade systems like Surgically Clean Air offer 5-stage filtration with UV-C, are built for continuous 24/7 operation, and include 5-year warranties backed by independent clinical validation.

Get Expert Guidance

Questions About Our Technology?

Our air quality specialists can help you understand which product and configuration is right for your space.

See the Proof

Independent testing. Clinical validation. Real-world performance data from 55,000+ installations.

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