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HEPA Air Purifier Technology Guide

Introduction to HEPA Air Purifier Filter Technology

The term HEPA is an acronym for "High Efficiency Particulate Air." HEPA filters are a common tool used in many mechanical air cleaners to filter small, unwanted, and unhealthy particles out of the air. They consist of a web of fibers arranged in a random pattern.

The first HEPA filters were designed by United States Department of Energy in the 1940s, though it was not until the 1950s that they began to enjoy widespread commercial use. Since then, there have been advances which have improved upon the original HEPA filters, but their basic design and function has remained the same for over half a century.

How HEPA Air Purifiers Work

According to the online encyclopedia Wikipedia, air purifiers with HEPA filters operate differently than a typical membrane filter. Non-HEPA filters generally have only very small pores, so that any bits of matter too large to fit through them are trapped. HEPA filters, however, operate based on a different principle. The space between HEPA fibers is actually often much larger than the particles a HEPA filter targets. Instead, HEPA filters catch particles through a combination of three different mechanisms:

HEPA Filter Particle Capture Technology

(Image courtesy of Wikipedia Commons - Author: LadyofHats)

Diagram information - Image shows the essential parts of a HEPA filter; the 3 smaller diagrams show how it works:

As the numbers above indicate, there is a narrow size window around .3 microns, inside of which the particles are less likely to be trapped by a HEPA filter. This is called the Most Penetrating Particle Size (MPPS). However, particles of this size are still captured by the filter, albeit less efficiently. The best measure of a HEPA filter's true worth is its ability to filter out particles within the MPPS range.

A standard way to test the effectiveness of HEPA filters is known as the "DOP penetration test." This involves sending a cloud of particles .3 microns in size through filter and comparing how highly concentrated these particles are in the airstream before and after they pass through it.

Effectiveness of HEPA Filters in Air Purifiers

According to the United States Environmental Protection Agency, HEPA filters are the most effective filter commonly found in mechanical air cleaners. To quote the EPA's guide to residential air cleaners: "True HEPA filters with a MERV between 17 and 19 are defined ... as having a minimum efficiency between 99.97 percent and 99.999 percent in removing 0.3 [micron] particles." MERV stands for "Minimum Efficiency Reporting Value" and represents the purifier's ability to clean the air. Usually MERV numbers fall between 1 and 16, but ratings of 17-20 are sometimes used for HEPA filters.

However, the EPA also warns of diminishing returns, to the point that using a stronger and more effective filter is no longer cost-efficient. It claims that cleaners with a MERV rating from 7-13 "are likely to be almost as effective as true HEPA filters" for most common purposes, and they will also be quieter and less expensive. Installing HEPA filters in large air cleaners will often require professional installation, further adding to the cost.

Also, in small, portable air cleaners, HEPA filters "may not be preferable to medium-efficiency filters because of HEPA filters’ lower air delivery."

Therefore, there are limits to the effectiveness of HEPA filters. On the other hand, they may be preferable to the so-called "HEPA-type" filters that are commonly found in lower-end small air cleaners, simply because HEPA filters must meet certain standards to be called HEPA, while "HEPA-type" could mean nearly anything.

Limitations of HEPA Filters

Keep in mind that the "P" in "HEPA" stands for "Particulate." HEPA filters only target airborne particles, not gasses. Although this means that a HEPA filter will help clean the air of many common pollutants, it also means that many others will pass right through the filter undisturbed. Many of the better air purifiers on the market will combine a HEPA filter with some other system that targets gaseous pollution, such as an activated carbon filter. Therefore, consumers are advised to consider their needs and all of the features of air purifiers before deciding which to buy.

As indicated above, HEPA filters also tend to be more expensive than other filters. Filters will almost always need to be regularly replaced at least once or twice a year, as well, meaning that there is an extra recurring cost in addition to the initial price of the purifier. This typically isn't large, but over time it does add up. Of course, some customers may decide that this an acceptable price to pay for the HEPA filter's power and reliability.


Conclusion - The Bottom Line About HEPA Air Purifier Filters

Anyone who does much comparison between different air purifiers will soon come across HEPA filters. They are the most effective type of filter available for removing solid particles from the air. On the other hand, they are more expensive, and are not effective at removing gasses. It would be a good idea to consider a purifier with a HEPA filter, especially over an ill-defined "HEPA-type" alternative, but be aware that there are limitations, and the presence of a HEPA filter does not by itself indicate that the purifier is a good one.

Sources:

Air Purifiers With HEPA Filters

Model Filter Type Detail
3M Filtrete FAP02-RS HEPA Filter More Info: 3M Filtrete FAP02-RS
Aerus AQ 1000 Pre-Filter, HEPA Filter & V.O.C. Blanket Filter More Info: Aerus AQ 1000
Aerus Electrolux EL490A HEPA Filter, Carbon Filter & Plasma Wave More Info: Aerus Electrolux EL490A
Aerus Electrolux EL491A HEPA Filter, Carbon Filter & Plasma Wave More Info: Aerus Electrolux EL491A
Aerus Electrolux EL500A HEPA Filter & Carbon Filter More Info: Aerus Electrolux EL500A
Aerus Electrolux EL500AX HEPA Filter, Carbon Filter & Plasma Wave More Info: Aerus Electrolux EL500AX
Aerus Electrolux EL500AZ HEPA Filter, Carbon Filter & Plasma Wave More Info: Aerus Electrolux EL500AZ
Aerus G2 Pre-Filter, HEPA Filter & Carbon Blanket Filter More Info: Aerus G2
Air-O-Swiss 2061 HEPA Filter w/ Activated Carbon Filter More Info: Air-O-Swiss 2061
Air-O-Swiss 2071 HEPA Filter w/ Activated Carbon Filter More Info: Air-O-Swiss 2071
Airgle 150 HEPA Filter More Info: Airgle 150
Airgle 750 4 stage - Pre-Filter, HEPA, Activated Carbon Filter & High Airflow Filter More Info: Airgle 750
Airpura C600 HEPA Filter w/ Carbon Filter, Microsupress Filter & Cleanable Pre-Filter More Info: Airpura C600
Airpura H600 HEPA Filter w/ HI-C Carbon Weave Filter & Cleanable Pre-Filter More Info: Airpura H600
Airpura I600 HEPA Filter w/ Cleanable Pre-Filter More Info: Airpura I600
Airpura P600 HEPA Filter w/ Titan Clean Reflectors, Carbon Filter & Pre-Filter More Info: Airpura P600
Airpura R600 HEPA Filter w/ Activated Carbon Filter & Pre-Filter More Info: Airpura R600
Airpura T600 HEPA Filter w/ Caron Filter & TarBarrier Pre-Filter More Info: Airpura T600
Airpura UV600 HEPA Filter w/ Activated Carbon Filter & UV Lamps More Info: Airpura UV600
Airpura V600 HEPA Filter w/ Enhanced Carbon Filter & Cleanable Filter More Info: Airpura V600
Alen A250 HEPA Filter More Info: Alen A250
Alen A350 HEPA (integrated Activated Carbon) w/ Washable Pre-Filter More Info: Alen A350
Alen A375UV HEPA w/ UV Lamps & Photo-Catalytic Oxidation Filter More Info: Alen A375UV
Alen Paralda HEPA style w/ UV Lamp More Info: Alen Paralda
Alen T100 HEPA w/ Washable Pre-Filter More Info: Alen T100
Alen T300 HEPA w/ UV Lamp & Activated Carbon Filter More Info: Alen T300
AllerAir 4000 D Exec Pre-Filter, Micro-HEPA Filter & Carbon Filter More Info: AllerAir 4000 D Exec
AllerAir 4000 D Vocarb Pre-Filter, Micro-HEPA Filter & Vocarb Blend Carbon Filter More Info: AllerAir 4000 D Vocarb
AllerAir 4000 DX Exec Pre-Filter, Micro-HEPA Filter & Carbon Filter More Info: AllerAir 4000 DX Exec
AllerAir 4000 DX Vocarb Pre-Filter, Micro-HEPA Filter & Carbon Filter More Info: AllerAir 4000 DX Vocarb
AllerAir 4000 Exec Pre-Filter, Medical Grade HEPA Filter & Carbon Filter More Info: AllerAir 4000 Exec
AllerAir 4000 Vocarb Pre-Filter, Medical Grade HEPA Filter & Vocarb Blend Carbon Filter More Info: AllerAir 4000 Vocarb
AllerAir 5000 D Exec Pre-Filter, Micro-HEPA Filter & Carbon Filter More Info: AllerAir 5000 D Exec
AllerAir 5000 D MCS Supreme Pre-Filter, Micro-HEPA Filter & Carbon Filter More Info: AllerAir 5000 D MCS Supreme
AllerAir 5000 D Vocarb Pre-Filter, Micro-HEPA Filter & Carbon Filter More Info: AllerAir 5000 D Vocarb
AllerAir 5000 DS Tar-trapping Pre-Filter, Micro-HEPA & Carbon Filter More Info: AllerAir 5000 DS
AllerAir 5000 DX Exec Pre-Filter, Micro-HEPA Filter & Carbon Filter More Info: AllerAir 5000 DX Exec
AllerAir 5000 DX Vocarb Pre-Filter, Micro-HEPA Filter & Carbon Filter More Info: AllerAir 5000 DX Vocarb
AllerAir 5000 DX VOG Pre-Filter, Micro-HEPA Filter, Carbon Filter & Vocarb Blend Carbon Filter More Info: AllerAir 5000 DX VOG
AllerAir 5000 DXS Tar-trapping Pre-Filter, Micro-HEPA & Carbon Filter More Info: AllerAir 5000 DXS
AllerAir 5000 Exec Pre-Filter, Medical Grade HEPA Filter & Carbon Filter More Info: AllerAir 5000 Exec
AllerAir 5000 HEPA Only Pre-Filter & Medical Grade HEPA Filter More Info: AllerAir 5000 HEPA Only
AllerAir 5000 MCS Supreme Pre-Filter, Medical Grade HEPA Filter & Carbon Filter More Info: AllerAir 5000 MCS Supreme
AllerAir 5000 Pro Exec Pre-Filter, Medical Grade HEPA Filter & Carbon Filter More Info: AllerAir 5000 Pro Exec
AllerAir 5000 Vocarb Pre-Filter, Medical Grade HEPA Filter & Carbon Filter More Info: AllerAir 5000 Vocarb
AllerAir 5000 VOG Pre-Filter, Medical Grade HEPA Filter, Carbon Filter & Vocarb Blend Carbon Filter More Info: AllerAir 5000 VOG
AllerAir 5000 W Exec Pre-Filter, Medical Grade HEPA Filter & Carbon Filter More Info: AllerAir 5000 W Exec
AllerAir 5000 W Vocarb Pre-Filter, Medical Grade HEPA Filter & Carbon Filter More Info: AllerAir 5000 W Vocarb
AllerAir 6000 AH Exec Pre-Filter, Medical Grade HEPA Filter & Carbon Filter More Info: AllerAir 6000 AH Exec
AllerAir 6000 AH Vocarb Pre-Filter, Medical Grade HEPA Filter & Carbon Filter More Info: AllerAir 6000 AH Vocarb
AllerAir 6000 D AH Exec Pre-Filter, Micro-HEPA Filter & Carbon Filter More Info: AllerAir 6000 D AH Exec
AllerAir 6000 D AH Vocarb Pre-Filter, Micro-HEPA Filter & Carbon Filter More Info: AllerAir 6000 D AH Vocarb
AllerAir 6000 D Exec Pre-Filter, Micro-HEPA Filter & Carbon Filter More Info: AllerAir 6000 D Exec
AllerAir 6000 D Vocarb Pre-Filter, Micro-HEPA Filter & Carbon Filter More Info: AllerAir 6000 D Vocarb
AllerAir 6000 DS Pre-Filter, Micro-HEPA Filter & Carbon Filter More Info: AllerAir 6000 DS
AllerAir 6000 DX Exec Pre-Filter, Micro-HEPA Filter & Carbon Filter More Info: AllerAir 6000 DX Exec
AllerAir 6000 DX Vocarb Pre-Filter, Micro-HEPA Filter & Carbon Filter More Info: AllerAir 6000 DX Vocarb
AllerAir 6000 DXS Pre-Filter, Micro-HEPA Filter & Carbon Filter More Info: AllerAir 6000 DXS
AllerAir 6000 Exec Pre-Filter, Micro-HEPA Filter & Carbon Filter More Info: AllerAir 6000 Exec
AllerAir 6000 Vocarb Pre-Filter, Medical Grade HEPA Filter & Carbon Filter More Info: AllerAir 6000 Vocarb
AllerAir 6000 W Vocarb Pre-Filter, Medical Grade HEPA Filter & Carbon Filter More Info: AllerAir 6000 W Vocarb
AllerAir AirMedic D Exec Pre-Filter, Micro-HEPA Filter & Carbon Filter More Info: AllerAir AirMedic D Exec
AllerAir AirMedic D MCS Pre-Filter, Micro-HEPA Filter & Carbon Filter More Info: AllerAir AirMedic D MCS
AllerAir AirMedic D Vocarb Pre-Filter, Micro-HEPA Filter & Carbon Filter More Info: AllerAir AirMedic D Vocarb
AllerAir AirMedic Exec Pre-Filter, Medical Grade HEPA Filter & Carbon Filter More Info: AllerAir AirMedic Exec
AllerAir AirMedic MCS Pre-Filter, Medical Grade HEPA Filter & Carbon Filter More Info: AllerAir AirMedic MCS
AllerAir AirMedic Vocarb Pre-Filter, Medical Grade HEPA Filter & Carbon Filter More Info: AllerAir AirMedic Vocarb
AllerAir AirMedic VOG Pre-Filter, Medical Grade HEPA Filter, Carbon Filter & Vocarb Blend Carbon Filter More Info: AllerAir AirMedic VOG
AllerAir AirMedic+ D Exec Pre-Filter, Micro-HEPA Filter & Carbon Filter More Info: AllerAir AirMedic+ D Exec
AllerAir AirMedic+ D MCS Pre-Filter, Micro-HEPA Filter & Carbon Filter More Info: AllerAir AirMedic+ D MCS
AllerAir AirMedic+ D Vocarb Pre-Filter, Micro-HEPA Filter & Carbon Filter More Info: AllerAir AirMedic+ D Vocarb
AllerAir AirMedic+ Exec Pre-Filter, Medical Grade HEPA Filter & Carbon Filter More Info: AllerAir AirMedic+ Exec
AllerAir AirMedic+ MCS Pre-Filter, Medical Grade HEPA Filter & Carbon Filter More Info: AllerAir AirMedic+ MCS
AllerAir AirMedic+ Vocarb Pre-Filter, Medical Grade HEPA Filter & Carbon Filter More Info: AllerAir AirMedic+ Vocarb
AllerAir AirMedic+ VOG Pre-Filter, Medical Grade HEPA Filter & Carbon Filter More Info: AllerAir AirMedic+ VOG
AllerAir AirTube Exec Pre-Filter, Medical Grade HEPA Filter & Carbon Filter More Info: AllerAir AirTube Exec
AllerAir AirTube Supreme Exec Pre-Filter, Medical Grade HEPA Filter & Carbon Filter More Info: AllerAir AirTube Supreme Exec
AllerAir AirTube Supreme Vocarb Pre-Filter, Medical Grade HEPA Filter & Carbon Filter More Info: AllerAir AirTube Supreme Vocarb
AllerAir AirTube Vocarb Pre-Filter, Medical Grade HEPA Filter & Vocarb Blend Carbon Filter More Info: AllerAir AirTube Vocarb
AllerAir I-6500 AH 80 Refillable Carbon Filter, Medical Grade HEPA Filter & Pre-Filter More Info: AllerAir I-6500 AH 80
AllerAir Project 007 Pre-Filter, Medical Grade HEPA Filter & Carbon Filter More Info: AllerAir Project 007
AllerAir Salon 5000 Vocarb Carbon Filter, Medical Grade HEPA Filter & Pre-Filter More Info: AllerAir Salon 5000
AllerAir Salon 6000 Vocarb Carbon Filter, Medical Grade HEPA Filter & Pre-Filter More Info: AllerAir Salon 6000
Amaircare 10000 HEPA Filter, Carbon Filter & Foam Pre-Filter (Optional VOC Filter) More Info: Amaircare 10000
Amaircare 2500 HEPA Filter, VOC Filter & Pre-Filter More Info: Amaircare 2500
Amaircare 3000 HEPA Filter, VOC Filter & Pre-Filter More Info: Amaircare 3000
Amaircare 6000V Airwash Cart HEPA Filter, VOC Filter & Foam Pre-Filter More Info: Amaircare 6000V Airwash Cart
Amaircare 7500 HEPA Filter, Carbon Filter & Foam Pre-Filter (Optional VOC Filter) More Info: Amaircare 7500
Amaircare 7500 Airwash Cart HEPA Filter, VOC Filter & Foam Pre-Filter More Info: Amaircare 7500 Airwash Cart
Amaircare 8500 HEPA Filter, Carbon Filter & Foam Pre-Filter (Optional VOC Filter) More Info: Amaircare 8500
Amaircare Airwash Whisper 350 HEPA Filter, VOC Filter & Foam Pre-Filter More Info: Amaircare Airwash Whisper 350
Amaircare Airwash Whisper 675 HEPA Filter, VOC Filter & Foam Pre-Filter More Info: Amaircare Airwash Whisper 675
Amaircare Roomaid 2001301 HEPA Filter, VOC Filter & Pre-Filter More Info: Amaircare Roomaid 2001301
Atmosphere 101076 Cleanable Pre-Filter, Carbon Filter & HEPA Filter More Info: Atmosphere 101076
Austin Air Allergy Machine Polyester Pre-Filter, Medical Grade HEPA Filter & HEGA Filter with Activated Military Carbon Cloth More Info: Austin Air Allergy Machine
Austin Air Allergy Machine Jr. Polyester Pre-Filter, Medical Grade HEPA Filter & HEGA Filter with Activated Military Carbon Cloth More Info: Austin Air Allergy Machine Jr.
Austin Air Baby’s Breath Polyester Pre-Filter, Medical Grade HEPA Filter & HEGA Filter with Activated Military Carbon Cloth More Info: Austin Air Baby’s Breath
Austin Air Bedroom Machine Pre-Filter, HEPA Filter, HEGA Carbon Cloth & Proprietary Carbon Blend More Info: Austin Air Bedroom Machine
Austin Air HealthMate Polyester Pre-Filter, HEPA Filter & Carbon, Zeolite Gas Phase More Info: Austin Air HealthMate
Austin Air HealthMate Jr. Polyester Pre-Filter, HEPA Filter & Carbon, Zeolite Gas Phase More Info: Austin Air HealthMate Jr.
Austin Air HealthMate+ Polyester Pre-Filter, HEPA Filter & Carbon, Zeolite and Potassium Iodide Gas Phase More Info: Austin Air HealthMate+
Austin Air HealthMate+ Jr. Polyester Pre-Filter, HEPA Filter & Carbon, Zeolite and Potassium Iodide Gas Phase More Info: Austin Air HealthMate+ Jr.
Austin Air Pet Machine Polyester Pre-Filter, Medical Grade HEPA Filter & Specialty Carbons/Zeolite Blend More Info: Austin Air Pet Machine
Bionaire BAP1400-U PERMAtech HEPA Type Filter More Info: Bionaire BAP1400-U
Bionaire BAP1412-U PERMAtech HEPA Type Filter More Info: Bionaire BAP1412-U
Bionaire BAP1525RCW-U Washable Pre-Filter & PERMAtech HEPA Type Filter More Info: Bionaire BAP1525RCW-U
Bionaire BAP1700-U PERMAtech HEPA Type Filter More Info: Bionaire BAP1700-U
Bionaire BAP260-U HEPA Filter More Info: Bionaire BAP260-U
Bionaire BAP825WO-U HEPA Filter More Info: Bionaire BAP825WO-U
Bionaire BAP9700-U PERMAtech HEPA Type Filter More Info: Bionaire BAP9700-U
Bionaire BAP9700S-U HEPA Filter More Info: Bionaire BAP9700S-U
Bionaire BAP9900UV-CNU Photocatalyst (TiO2) Filter, HEPA Filter & Germicidal UV Light More Info: Bionaire BAP9900UV-CNU
Blueair 203 HEPA + Electrostatic, Activated Carbon More Info: Blueair 203
Blueair 303 HEPA + Electrostatic, Activated Carbon More Info: Blueair 303
Blueair 403 HEPA + Electrostatic, Activated Carbon More Info: Blueair 403
Blueair 450E HEPA + Electrostatic, Activated Carbon More Info: Blueair 450E
Blueair 503 HEPA + Electrostatic, Activated Carbon More Info: Blueair 503
Blueair 603 HEPA + Electrostatic, Activated Carbon More Info: Blueair 603
Blueair 650E HEPA + Electrostatic, Activated Carbon More Info: Blueair 650E
Blueair ECO10 HEPA + Electrostatic, Activated Carbon More Info: Blueair ECO10
CFM CX1000 5 micron Pre-Filter, 0.3 micron HEPA Filter More Info: CFM CX1000
Coway AP-0509DH Pre-Filter, Medium Deodorization Filter & Anti-flu HEPA Filter More Info: Coway AP-0509DH
Coway AP-0510CH Pre-Filter, Custom Filter & Anti-Flu HEPA Filter More Info: Coway AP-0510CH
Coway AP-1005AH Pre-Filter, Meduim Filter, Anti-Flu HEPA Filter, Allergy Shield Filter & Deodorization Filter More Info: Coway AP-1005AH
Coway AP-1008CH Pre-Filter, A3 Meduim Filter & Anti-flu HEPA Filter More Info: Coway AP-1008CH
Coway AP-1009CH Pre-Filter, Medium Deodorization Filter & Anti-flu HEPA Filter More Info: Coway AP-1009CH
Coway AP-1506DH Pre-Filter, Option Filter, Active Carbon Deodorization Filter & True HEPA Filter More Info: Coway AP-1506DH
Coway AP-1510BH Pre-Filter, Custom Filter, Deodorization Filter & Anti-Flu HEPA Filter More Info: Coway AP-1510BH
Coway AP-2505CH HEPA, pre-filter More Info: Coway AP-2505CH
Coway AP-3008FH Pre-Filter, Custom Filter, Deodorization Filter & Anti-Flu HEPA Filter More Info: Coway AP-3008FH
Coway APM-1510FH Pre-Filter, Custom Filter, Deodorization Filter & Anti-Flu HEPA Filter More Info: Coway APM-1510FH
Crane EE-5064 5 Level Filtration: HEPA Filter, Acrtive Caron Filter, Photocatalyst Filter, Particle Filter Foam & Germicidal UV Light More Info: Crane EE-5064
Crane EE-5065 5 Level Filtration: HEPA Filter, Acrtive Caron Filter, Photocatalyst Filter, Particle Filter Foam & Germicidal UV Light More Info: Crane EE-5065
Dr. Caboodle Air Purifier Anti-Microbial Pre-Filter, HEPA Filter & Activated Carbon Filter w/ UV-C Germicidal Lamp More Info: Dr. Caboodle Air Purifier
Dr. Caboodle Legacy Air Purifier Anti-Microbial Pre-Filter, HEPA Filter & Activated Carbon Filter More Info: Dr. Caboodle Legacy Air Purifier
Funglan KJ-101 Anti-bacterial Pre-Filter, HEPA Filter & Active Carbon Filter More Info: Funglan KJ-101
Funglan KJ-21 PP Filter, HEPA Filter, Cold Catalyst Filter, Activated Carbon Filter & Ionizer More Info: Funglan KJ-21
Funglan KJ-22 PP Filter, HEPA Filter, Cold Catalyst Filter, Activated Carbon Filter & Ionizer More Info: Funglan KJ-22
Funglan KJ-23A PP Filter, HEPA Filter, Cold Catalyst Filter, Activated Carbon Filter & Ionizer More Info: Funglan KJ-23A
Funglan KJ-23B PP Filter, HEPA Filter, Cold Catalyst Filter, Activated Carbon Filter & Ionizer More Info: Funglan KJ-23B
Funglan KJG-180A HEPA Filter, Washable Antibacterial Filter, Ionizer, Photocatalyst Filter & UV Light More Info: Funglan KJG-180A
Funglan KJG-180B HEPA Filter, Washable Antibacterial Filter, Ionizer, Photocatalyst Filter & UV Light More Info: Funglan KJG-180B
Funglan KJG-180C HEPA Filter, Washable Antibacterial Filter, Ionizer, Photocatalyst Filter & UV Light More Info: Funglan KJG-180C
General Electric AFHC09AM HEPA Filter & Washable Pre-Filter More Info: General Electric AFHC09AM
General Electric AFHC21AM HEPA Filter & Washable Pre-Filter More Info: General Electric AFHC21AM
General Electric AFHC32AM HEPA Filter & Washable Pre-Filter More Info: General Electric AFHC32AM
Germ Guardian AC4010 HEPA Filter, Charcoal Filter, PCO Filter & UV Technology More Info: Germ Guardian AC4010
Germ Guardian AC4825 Pre-Filter, HEPA Filter, Charcoal Filter & UV Technology More Info: Germ Guardian AC4825
Germ Guardian AC5000 HEPA Combo HEPA (Pre-Filter, HEPA, Photocatalyst & Charcoal Filter) More Info: Germ Guardian AC5000 HEPA
Haier HAPE200 HEPA & Active Carbon Filter More Info: Haier HAPE200
Haier HAPE300 HEPA & Active Carbon Filter More Info: Haier HAPE300
Haier HAPM100 HEPA & Active Carbon Filter More Info: Haier HAPM100
Hamilton Beach Air Decor HEPA Filter More Info: Hamilton Beach Air Decor
Hamilton Beach TrueAir 04384 Permanent Pre-Filter, HEPA Grade Filter & Carbon Filter More Info: Hamilton Beach TrueAir 04384
Hamilton Beach TrueAir Ecoclean 04493 HEPA Filter & Carbon Filter More Info: Hamilton Beach TrueAir Ecoclean 04493
Holmes HAP1200-U Permanent Filter, HEPA Filter & Pre-Filter More Info: Holmes HAP1200-U
Holmes HAP223 HEPA Filter More Info: Holmes HAP223
Holmes HAP2400B-U HEPA Filter More Info: Holmes HAP2400B-U
Holmes HAP242-TU1 HEPA Filter More Info: Holmes HAP242-TU1
Holmes HAP412W-TU HEPA Filter More Info: Holmes HAP412W-TU
Holmes HAP422RC-TU HEPA Filter More Info: Holmes HAP422RC-TU
Holmes HAP424-U HEPA Filter More Info: Holmes HAP424-U
Holmes HAP706-U HEPA Filter & Washable Pre-Filter More Info: Holmes HAP706-U
Holmes HAP716-U HEPA Filter & Washable Pre-Filter More Info: Holmes HAP716-U
Holmes HAP726-U HEPA Filter & Carbon Filter More Info: Holmes HAP726-U
Holmes HAP756-U HEPA Filter More Info: Holmes HAP756-U
Holmes HAP8615-U HEPA Filter More Info: Holmes HAP8615-U
Holmes HAP9240-U HEPA Filter More Info: Holmes HAP9240-U
Holmes HAP9412B-U HEPA Filter More Info: Holmes HAP9412B-U
Holmes HAP9412W-U HEPA Filter More Info: Holmes HAP9412W-U
Holmes HAP9424B-U HEPA Filter More Info: Holmes HAP9424B-U
Holmes HAP9424W-U HEPA Filter More Info: Holmes HAP9424W-U
Honeywell 16200 HEPA Filter & Washable Pre-Filter More Info: Honeywell 16200
Honeywell 17000-S Permanent HEPA w/ Carbon Pre-Filter More Info: Honeywell 17000-S
Honeywell 50150-N Permanent HEPA w/ Activated Carbon Pre-Filter More Info: Honeywell 50150-N
Honeywell 50250-N HEPA Filter & Carbon Pre-Filter More Info: Honeywell 50250-N
Honeywell HHT-011 HEPA Filter More Info: Honeywell HHT-011
Honeywell HHT-080 HEPA Filter More Info: Honeywell HHT-080
Honeywell HHT-081 HEPA Filter More Info: Honeywell HHT-081
Honeywell HHT-090 Permanent HEPA Filter & Washable Pre-Filter More Info: Honeywell HHT-090
Honeywell HHT-145 HEPA Filter, Zeolite Pre-Filter & UV technology More Info: Honeywell HHT-145
Hunter HEPAtech 30027 HEPA Filter More Info: Hunter HEPAtech 30027
Hunter HEPAtech 30057 Pre-Filter & HEPA Filter More Info: Hunter HEPAtech 30057
Hunter HEPAtech 30067 Pre-Filter & HEPA Filter More Info: Hunter HEPAtech 30067
Hunter HEPAtech 30124 Pre-Filter & HEPA Filter More Info: Hunter HEPAtech 30124
Hunter HEPAtech 30180 Pre-Filter & HEPA Filter More Info: Hunter HEPAtech 30180
Hunter HEPAtech 30526 Pre-Filter & HEPA Filter More Info: Hunter HEPAtech 30526
Hunter HEPAtech 30710 Pre-Filter & HEPA Filter More Info: Hunter HEPAtech 30710
Hunter HEPAtech 30715 Pre-Filter & HEPA Filter More Info: Hunter HEPAtech 30715
Hunter HEPAtech Tower 30836 Pre-Filter, HEPA Filter & UVC Germicidal Technology More Info: Hunter HEPAtech Tower 30836
Hunter HEPAtech Tower 30841 Pre-Filter, HEPA Filter & UVC Germicidal Technology More Info: Hunter HEPAtech Tower 30841
Hunter HEPAtech Tower 30847 Pre-Filter, HEPA Filter & UVC Germicidal Technology More Info: Hunter HEPAtech Tower 30847
Hunter PermaLife 30190 Pre-Filter & HEPA Filter More Info: Hunter PermaLife 30190
Hunter PermaLife 30547 Activated Carbon Pre-Filter & Permanent HEPA Filter More Info: Hunter PermaLife 30547
Hunter PermaLife 30748 Activated Carbon Pre-Filter & Permanent HEPA Filter More Info: Hunter PermaLife 30748
Hunter PermaLife 30756 Activated Carbon Pre-Filter & Permanent HEPA Filter More Info: Hunter PermaLife 30756
Hunter QuietFlo 30085 Activated Carbon Pre-Filter & True HEPA Filter More Info: Hunter QuietFlo 30085
Hunter QuietFlo 30090 Activated Carbon Pre-Filter & True HEPA Filter More Info: Hunter QuietFlo 30090
Hunter QuietFlo 30245 Activated Carbon Pre-Filter & True HEPA Filter More Info: Hunter QuietFlo 30245
Hunter QuietFlo 30401 Activated Carbon Pre-Filter & True HEPA Filter More Info: Hunter QuietFlo 30401
Hunter QuietFlo 30402 Activated Carbon Pre-Filter & True HEPA Filter More Info: Hunter QuietFlo 30402
Hunter QuietFlo 30730 Activated Carbon Pre-Filter & True HEPA Filter More Info: Hunter QuietFlo 30730
Hunter QuietFlo 30736 Activated Carbon Pre-Filter & True HEPA Filter More Info: Hunter QuietFlo 30736
IQAir Cleanroom H13 HyperHEPA & PreMax Pre-Filter w/ Antimicrobial Agent More Info: IQAir Cleanroom H13
IQAir CleanZone Double V Design Filter & HyperHEPA Filter More Info: IQAir CleanZone
IQAir HealthPro Mini-Pleat Pre-Filter & HEPA Filter More Info: IQAir HealthPro
IQAir HealthPro Compact Mini-Pleat Pre-Filter & HEPA Filter More Info: IQAir HealthPro Compact
IQAir HealthPro Plus Mini-Pleat Pre-Filter, HEPA Filter & Carbon Alumina Potassium Permanganate Filter More Info: IQAir HealthPro Plus
Kenmore AC-2062 Cleanable HEPA-Type & Pre-Filter More Info: Kenmore AC-2062
Kenmore PlasmaWave 85150 True HEPA Filter & Activated Carbon Filter More Info: Kenmore PlasmaWave 85150
Kenmore PlasmaWave 85300 True HEPA Filter & Activated Carbon Filter More Info: Kenmore PlasmaWave 85300
Kenmore PlasmaWave 85450 True HEPA Filter & Activated Carbon Filter More Info: Kenmore PlasmaWave 85450
LG PS-M550 16 Step Filtration: HEPA Filter, Allergen Filter & NPI Sterilization More Info: LG PS-M550
LG PS-MK450 11 Step Filtration: HEPA Filter, Allergen Filter & NPI Sterilization More Info: LG PS-MK450
LG PS-N550WP 16 Step Filtration: HEPA Filter, Allergen Filter & Odor Filter More Info: LG PS-N550WP
LG PS-P700 10 Step Filtration: HEPA Filter & Allergen Filter More Info: LG PS-P700
LG PS-P800 10 Step Filtration: HEPA Filter & Allergen Filter More Info: LG PS-P800
LG PS-S200WC 6 Step Filtration: HEPA Filter, Pre-Filter & Carbon Filter More Info: LG PS-S200WC
Neoair BabyAir Pre-Filter, HEPA Filter & Activated Carbon More Info: Neoair BabyAir
Neoair Cruiser Multi-Stage Air Filtration: UV Light, Photo-calystic, HEPA Filter & Activated Carbon More Info: Neoair Cruiser
Neoair ENVIRO 68108 Prescreening Filter, HEPA Filter, Activated Carbon Filter & Advanced OFS Filter More Info: Neoair ENVIRO 68108
Neoair Enviro PLUS Pre-Filter, Super HEPA Filter & Advanced OFS Filter More Info: Neoair Enviro PLUS
Neoair Marine Multi-Stage Air Filtration: UV Light, Photo-calystic, HEPA Filter & Activated Carbon More Info: Neoair Marine
NQ 1000 Pre-Filter, HEPA Filter & Germicidal UV More Info: NQ 1000
NQ 2000 Pre-Filter, HEPA Filter & Germicidal UV More Info: NQ 2000
NQ 250 Pre-Filter, HEPA Filter & Germicidal UV More Info: NQ 250
NQ 400 Pre-Filter, HEPA Filter & Germicidal UV More Info: NQ 400
NQ 500 Pre-Filter, HEPA Filter & Germicidal UV More Info: NQ 500
NQ Clarifier Medical Pre-Filter, Activated Carbon Filter, HEPA Filter, Carbon Post Filter & Germicidal UV More Info: NQ Clarifier Medical
NQ Clarifier Standard Pre-Filter, Activated Carbon Filter, HEPA Filter, Carbon Post Filter & Germicidal UV More Info: NQ Clarifier Standard
Oransi v-hepa PRO UV Pre-Filter, High Efficiency V-HEPA Filter, Photocatalytic Oxidation Filter, Activated Carbon Filter & Germicidal UV Lamp More Info: Oransi v-hepa PRO UV
Panasonic F-P10HU1 HEPA Filter & Deodorizing Filter More Info: Panasonic F-P10HU1
Panasonic F-P15HU2 HEPA Filter More Info: Panasonic F-P15HU2
Panasonic F-P20HU1 HEPA Filter More Info: Panasonic F-P20HU1
Pure Air 1200HS Plus Pre-Filter, Carbon Filter & HEPA Filter More Info: Pure Air 1200HS Plus
Pure Air 2000HS Plus Pre-Filter, Carbon Filter & HEPA Filter More Info: Pure Air 2000HS Plus
Pure Air 600HS Pre-Filter, Carbon Filter & HEPA Filter More Info: Pure Air 600HS
Pure Air 600HS Plus Pre-Filter, Carbon Filter & HEPA Filter More Info: Pure Air 600HS Plus
Pure Air HPS 350 Pre-Filter, Carbon Filter & HEPA Filter More Info: Pure Air HPS 350
Pure Air HPS 500 Pre-Filter, Carbon Filter & HEPA Filter More Info: Pure Air HPS 500
Rabbit Air BioGS SPA-421A Pre Filter, HEPA Filter, Charcoal Filter & Negative Ions More Info: Rabbit Air BioGS SPA-421A
Rabbit Air BioGS SPA-421A BCRF Special Edition Pre Filter, HEPA Filter, Charcoal Filter & Negative Ions More Info: Rabbit Air BioGS SPA-421A BCRF Special Edition
Rabbit Air BioGS SPA-582A Pre Filter, HEPA Filter, Charcoal Filter & Negative Ions More Info: Rabbit Air BioGS SPA-582A
Rabbit Air MinusA2 SPA-700A Pre Filter, Medium Filter, HEPA Filter, Customized Filter , Charcoal Filter & Negative Ions More Info: Rabbit Air MinusA2 SPA-700A
Rabbit Air MinusA2 SPA-780A Pre Filter, Medium Filter, HEPA Filter, Customized Filter , Charcoal Filter & Negative Ions More Info: Rabbit Air MinusA2 SPA-780A
Riccar EcoPure HEPA Filter More Info: Riccar EcoPure
Riccar RAPL Pre-Filter, HEPA Filter, Carbon Filter & PlasmaWave More Info: Riccar RAPL
Riccar RAPM Pre-Filter, HEPA Filter, Carbon Filter & PlasmaWave More Info: Riccar RAPM
Sharp FP-P30U Pre Filter, HEPA Filter & Carbon Filter More Info: Sharp FP-P30U
Sharp FP-P35CX HEPA Filter More Info: Sharp FP-P35CX
Sharp FP-P40CX HEPA Filter More Info: Sharp FP-P40CX
Sharp FP-P60CX Pre Filter, HEPA Filter & Carbon Filter More Info: Sharp FP-P60CX
Sharp FP-R30CX HEPA Filter & Carbon Filter More Info: Sharp FP-R30CX
Sharp FP-R45CX Pre Filter, HEPA Filter & Carbon Filter More Info: Sharp FP-R45CX
Sharp FP-R65CX Pre Filter, HEPA Filter & Carbon Filter More Info: Sharp FP-R65CX
Sharp KC-830U Pre Filter, HEPA Filter, Active Carbon Filter & Humidifying Filter More Info: Sharp KC-830U
Sharp KC-850U Pre Filter, HEPA Filter, Active Carbon Filter & Humidifying Filter More Info: Sharp KC-850U
Sharp KC-860U Pre Filter, HEPA Filter, Active Carbon Filter & Humidifying Filter More Info: Sharp KC-860U
Sharp KC-C100U Pre Filter, HEPA Filter, Active Carbon Filter & Humidifying Filter More Info: Sharp KC-C100U
Sharp KC-C150U Pre Filter, HEPA Filter, Active Carbon Filter & Humidifying Filter More Info: Sharp KC-C150U
Sun Pure SP-20 Micron Pre-Filter, Activated Cocunt Carbon Pleat, Hospital Grade HEPA Filter & UV Light More Info: Sun Pure SP-20
Sun Pure SP-20C Micron Pre-Filter, Hospital Grade HEPA Filter, Activated Carbon, Zeolite & Potassium Permanganate & UV Light More Info: Sun Pure SP-20C
Tiger AKH-A25U True HEPA Filter & Activated Charcoal Filter More Info: Tiger AKH-A25U
Vollara FreshAir HEPA Pre-Filter, HEPA Filter w/ Activated Carbon More Info: Vollara FreshAir HEPA
Vornado AQS15 True HEPA Filter & PreSorb Pre-Filter More Info: Vornado AQS15
Vornado AQS35 True HEPA Filter & PreSorb Pre-Filter More Info: Vornado AQS35
Westinghouse WAP611 6 Stage Purification System: Pre-Filter, Activated Carbon & HEPA Filter More Info: Westinghouse WAP611
Westinghouse WAP811 8-Stage Purification System: Pre-Filter, Activated Carbon, Complex Silicon Filtration, Nano-Silver Anti Bacteria Filter & HEPA Filter More Info: Westinghouse WAP811
Westinghouse WAP812 8-Stage Purification System: Pre-Filter, Activated Carbon, Complex Silicon Filtration, Nano-Silver Anti Bacteria Filter & HEPA Filter More Info: Westinghouse WAP812
Whirlpool Whispure 250 Charcoal Pre-Filter & HEPA Filter More Info: Whirlpool Whispure 250
Whirlpool Whispure 450 Charcoal Pre-Filter & HEPA Filter More Info: Whirlpool Whispure 450
Whirlpool Whispure 510 Charcoal Pre-Filter & HEPA Filter More Info: Whirlpool Whispure 510
Whirlpool Whispure APR45230L Charcoal Pre-Filter & HEPA Filter More Info: Whirlpool Whispure APR45230L
Winix PlasmaWave 5000 Pre-Filter, HEPA Filter, Nano-Silver Mesh, Carbon Filter & PlasmaWave Technology More Info: Winix PlasmaWave 5000
Winix PlasmaWave 5000B Carbon Pre-Filter, HEPA Filter & PlasmaWave Technology More Info: Winix PlasmaWave 5000B
Winix PlasmaWave 5300 Carbon Pre-Filter, HEPA Filter & PlasmaWave Technology More Info: Winix PlasmaWave 5300
Winix PlasmaWave 9000 Pre-Filter, HEPA Filter, Nano-Silver Mesh, Carbon Filter & PlasmaWave Technology More Info: Winix PlasmaWave 9000
Winix PlasmaWave 9000S HEPA Filter More Info: Winix PlasmaWave 9000S
Winix WAC-5000S Pre-Filter, HEPA Filter, Nano-Silver Mesh, Carbon Filter & PlasmaWave Technology More Info: Winix WAC-5000S
Zojirushi UltraSlim PA-LTC10 HEPA Filter More Info: Zojirushi UltraSlim PA-LTC10
Zojirushi UltraSlim PA-MTC14 HEPA Filter More Info: Zojirushi UltraSlim PA-MTC14

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