IQAir GC MultiGas Air Purifier New Edition


Best Air Purifier. Like IQAir's award-winning HEPA air purifiers, the IQAir GC MultiGas Air Purifier applies similar filtration technology to eliminate gaseous impurities from your environment. This compact, six-speed air cleaner uses up to 17 pounds of specially formulated gas phase filter media—customized to your preference—to remove harmful gases, chemicals, Volatile Organic Compounds (VOCs), smoke, formaldehyde, and other odors from your space. As an added benefit, the IQAir GC MultiGas air purification system effectively filters out micro-pollutants and nano-particles, including allergens such as mold spores, pollen, ragweed, pet dander, and dust as well as bacteria and viruses.


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QAir New Edition GC Series Air Purifiers

  • The world's most effective compact room air purifier for odor and chemical control.
  • Cleans an indoor spaces measuring up to 1125 square feet.
  • Is IQAir's #1 bestselling air purifier for people suffering from multiple chemical sensitivities (MCS).
  • Offers you four customizable gas filter packages that allow you to adapt to your filtration needs.
  • Filters out common allergen particles and other symptom-aggravating impurities using two types of particle filters.
  • Uses ultra-efficient filtration technology harnessed by high-end, quality components.

Advanced Chemical Filtration

IQAir GC MultiGas air purifiers target the broadest range of gaseous compounds, odors, particles, and smoke.

  • This model is a good choice for generalized airborne gas and chemical removal and for individuals with MCS.
  • The IQAir GC MultiGas filter media consists of 12 pounds of granular activated carbon and impregnated alumina.
  • This model filters out chemical traces and odors stemming from Acetic acid, Acetone, Acrolein, Acrylonitrile, 1.3 Butadiene, Butyric acid, Carbon disulfide, Chlorine dioxide, Cresol, Cyclohexanone, Diethylamine, Dimethylamine, Ethanol, Ethyl acetate, Ethyl acrylate, Ethylamine, Formaldehyde, Formic acid, Hydrogen chloride, Isoprene, Isopropanol, Methanol, Methyl acrylate, Methyl disulfide, Methyl ethyl ketone, Methyl mercaptan, Methyl sulfid, Methyl vinyl ketone, Methylamine, Nitroglycerine, Ozone, Phenol, Skatole, Styrene, Sulfur trioxide, Trichloroethylene, Trihylamine, Trimethylamine, and Vinyl chloride

Triple-Seal Filter Technology

It's equipped with four reusable filter cartridges that hold up to 17 pounds of gas phase filter media. These cylindrically shaped cartridges allow for optimum contact between your indoor air and the gas phase media—which in turn ensures a higher impurity removal rate. Along with the gas filter cartridges, the GC air cleaner features a HEPA-type particle pre-filter and four electrostatic post-filter sleeves.

Each IQAir GC MultiGas Air Purifier features patented, triple-sealing filter technology that ensures that your system always removes of 99% of airborne particles and chemical traces sized 0.3 microns and larger. Often times, the efficiency stated for air cleaners is purely theoretical and may be inflated because of internal air leakage. This can drastically reduce the actual filtration efficiency of the system. The GC Series air cleaner puts a stop to air leakage in three ways:

  • First, a unique sealing process ensures that the air cleaner's filter media is 100% sealed in the filter frame.
  • Second, the patented 3D UltraSeal ensures perfect sealing between filter frame and the GC Series model's housing.
  • Third, individual seals on each housing module ensure airtight closing around the filters.

As a result, IQAir GC MultiGas has an actual system efficiency that's higher than the theoretical efficiency of comparable air cleaners.

Longer Filter Life

In addition to having a higher filtering efficiency than other air purifiers, GC MultiGas filters are designed to last longer than those of conventional chemical air cleaners.

  • High-Efficiency Pre-Filtration 
    While most air cleaners use pre-filters with particle efficiencies well below 20%, IQAir systems typically retain more than 90% of particle mass in their pre-filters. As a result, GC gas phase filters are better protected from premature particle overload.
  • Independent Filter Stages 
    Conventional air purifiers often combine several filter types in one filter cartridge. As a result, the whole filter cartridge has to be replaced even if only one filter type is used up. Each filter in an IQAir purifier is separate and can be changed independent of the other filters.
  • Larger Filters 
    To help cut manufacturing costs, many air cleaners use very little filter material. However, GC MultiGas air purifier uses commercial-size gas filters that collect more pollutants and last much longer. The pre-filter lasts 12 months; the gas phase media cartridges (4) 2.5 years; and the 4 post-filter sleeves last 2.5 years (based on 8-hour daily usage on speed 3).

To help you stay on top of filter life, the GC MultiGas air purifier features an intelligent filter life monitor. Unlike ordinary cleaners that leave you guessing when to replace filters, the GC Series' intelligent filter life monitor measures filter life by actual use, speed settings, and air quality conditions. This monitoring system ensures the maximum filter yield and performance from your IQAir system.

Quality Fans, No-Draft Design

IQAir air purification systems use the highest-quality fan motors available. These centrifugal, backward curved fans have impressive 300 CFM (510 m3/h) ratings. Because each fan is individually balanced within the unit and uses steel ball bearings, it can outlast other purifier fans by years. Moreover, each internal fan contributes to the air cleaner's no-draft design. Most air cleaners return the air through a small outlet, which creates uncomfortable air drafts. The GC system does not produce drafts because it evenly propels air upward through a 320-degree vented diffuser.

Solid Construction

Many high-end air purifiers are made from sheet metal—which dents, scratches, and chips easily. In addition, many department store air cleaners use inferior plastics that can unexpectedly shatter. The GC MultiGas is built to last and to look great for a lifetime. This unit is manufactured using high-grade, injection-molded ABS plastic. A 3-millimeter (0.125 inches) housing thickness also makes the unit extremely impact-resistant.

Quieter Operation

The unique ultra-quiet design of the IQAir GC MultiGas makes it unlike other air purifiers.

  • The fan located in the center, in between noise-absorbing filters.
  • Double-walled housing reduces sound transmission.
  • Eight shock absorbers hold the fan secure so that vibration is not transmitted to the housing.
  • This system is suitable for even the most noise-sensitive environments.
  • Virtually inaudible at the lowest fan speed setting.

Certified Performance

In an industry where most air purifiers don't actually meet their manufacturers' claims, IQAir tests and certifies each system that comes off the assembly line. Every IQAir unit is tested against particle filtration efficiency, filter leakage, and air delivery standards and is issued its own two-page Certificate of Guaranteed Performance detailing the test results for that machine.

Additional Features

  • Electronic Control Panels – Each GC model features an electronic pushbutton control panel with LCD display.
  • 6 Purification Speeds – Purify your indoor air at 6 different speeds according to your needs.
  • Programmable Timers – Program automatic timed operation for one day or for certain days of the week. You can also configure the system to use certain fan speeds at certain times.
  • Multiple Display Languages – Choose to display your settings in English, French, German, Italian, or Spanish.
  • Control Panel Lock – Lock your control panel settings with this simple functionality.
  • Remote Control – Choose your operation settings from a comfortable distance.


Additional Information

Product Specification
Size GC MultiGas
Square Foot Coverage Up to 1125 sq. ft
Power Requirements 110-120V AC, 60Hz
Energy Consumption Speed 1-6: 27, 53, 92, 121, 154, 215 watts
Clean Air Density Rate (CADR) Not tested by AHAM
Rated Air Flow of Fan 780 cfm
Delivered Air Flow Speed 1-6: 40, 75, 130, 170, 200, 300 cfm
Decibels Speed 1-6: 35, 46, 54, 60, 64, 69 dB(A)
Dimensions 28"H x 15""W x 16"D
Weight 38 lbs.
Pre-filter HEPA Pre-Filter H11
Particle Filter Post-Filter Sleeve Set
Carbon Filter GC MultiGas Filter Cartridge Set
Carbon weight 12 lbs.
Warranty 10-year limited warranty (residential) or 2-year limited warranty (commercial)—excludes filters

Manufacturer's Warranty

10-Year Limited (Residential Use); 1-Year Limited (Commercial Use)

Power Requirements
  • Safety tested and approved for 120 V outlets. Requirements in the U.S., Canada, and Mexico only.
  • Damage will occur if plugged into a 220-240 V outlet.
  • The use of a transformer or adapter will not prevent the risk of damage.
  • This product has no warranty coverage when used outside North America.

Manufacturer's Literature

Warranty Information 
Owners Manual

What's In The Box?

  • IQAir GC MultiGas Air Purifier
  • Power Cord (10 feet)
  • 4 Gas Phase Filter Cartridges
  • 4 Post-Filter Sleeves (inside unit)
  • Set of 4 Casters
  • Remote Control (with battery)
  • Product Reference Materials
UPC 7640145092381
Vacuum Type Air Purifier
Manufacturer IQAir
Price $1,299.00

Customer Reviews

Past the test Review by Hamdy
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Purchased this machine to tackle as wide range of airborne radicals as possible, with a particular focus on formaldehyde. I opted for the MultiGas over the Chemisorber because of the diverse coverage offered by the MultiGas. I was not able to retrieve any quantitative information on how effective this machine (or any for that matter) is on formaldehyde so I put it to a test of my own. Keeping in mind that formaldehyde is a very volatile chemical, I did my best to keep the time of day, length of time, temp/RH, air exposure as constant as possible. I tested using an ACS Badge without and then with the GC MultiGas. The environment tested was already relatively low, but still beyond an ideal environment for someone with high sensitivity being exposed for long term. My before reading was 43 ppb. My after reading was 21 ppb. I let the machine run for 1-2 days straight on setting 3 (it's a small room) between tests. I currently keep it on setting 2 and only run it in the evening. In my test, a 50% reduction was impressive at already somewhat low levels. I would like to know how this would impact cases of 100 ppb or higher, but the testing would get costly at $40 per badge, as I have nothing more to prove to myself. Would be great for tests like this to be run in more controlled environments to boast the capabilities of this machine.


Perfect purifier Review by salem
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We live in an area that is experiencing 60,000+ acres of wildfires in steep, road-less areas. Experts say to expect fires to burn until late fall if/when we receive prolonged, heavy rains. In addition to the inconvenience of smoke entering our home, I have multiple chemical sensitivities. This product ordered from acevacuums and arrived securely packaged to ensure quality delivery. The product was easy to install given its instructions. We closed doors to unneeded rooms and placed the air purifier in a central location that covers multiple rooms where we spend most of our time. Within a few hours, we had clean air! I could have purchased a cheaper unit, but I couldn't risk regretting being frugal. If you are serious about clean air, this is the product for you. We are thrilled with our purchase.

Great product Review by John
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I would have had to move out of my apartment if it weren't for the IQAir machine. It's the best investment I have made this year in my battle with Multiple Chemical Sensitivity. Bottom Line Yes, I would recommend this to a friend

It works!! Review by Sara
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Using the machine on the 170CFM setting, and running a ceiling fan results in pollutant concentrations ( in our instance the VOG and sugar cane burning smoke here on Maui, Hi) dropping faster than predicted by the Continuously stirred batch reactor model. It is effective in scrubbing air from quite large rooms. It is
a Godsend for the allergy sufferer living in paradise

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