GC™ MultiGas

GC™ MultiGas


#1 Rated room air purifier for MCS, odors & smoke

The GC MultiGas combines HyperHEPA particle filtration with powerful gas and odor filtration.

Up to 11% more clean air

The New Edition GC MultiGas features the most powerful fan ever used in a residential room air purifier. That power translates into even better air cleaning results. The new three-dimensionally optimized design now uses state-of-the-art aerodynamics to convert energy into more air and less noise. We also improved the HyperHEPA® filter pleating design, which increases the filter surface area of the filter. The result of these improvements is up to 11% more clean air.

Proven performance against ultrafine particles

Ultrafine particles are smaller than 0.1 microns. By sheer number, about 90% of all airborne particles are this size. The primary source of ultrafine particles is combustion from motor vehicles, refineries, industrial plants and even cooking. Viruses are also ultrafine particles. The small size of ultrafine particles enables them to be easily inhaled, deposited into the lungs and absorbed into the blood. They have been linked to heart attacks, strokes, asthma and even cancer.

Manufacturers of ordinary air filtration systems claim only that their systems filter particles larger than 0.3 microns. IQAir is different. IQAir’s HyperHEPA filtration in the GC MultiGas is proven and certified to filter at least 95% of all particles down to 0.003 microns – the smallest particles that exist. Independent testing by laboratories and government agencies verifies the effectiveness of IQAir technology against ultrafine particles. When it comes to protection against ultrafine particulates, IQAir is the proven choice.

Powerful gas and odour removal

The GC MultiGas packs the air cleaning capacity of more than 100 gas masks.

Highest amount of micropores

The activated carbon used in IQAir’s GC MultiGas media is activated in a way to preserve the maximum number of micropores.

Certified performance

IQAir looks beyond theoretical claims, testing the performance of each individual GC MultiGas system at the factory to ensure that it meets our strict specifications. The results of the tests are detailed in a hand-signed Certificate of Performance, which is included with every air purifier. No GC MultiGas air purifier will be shipped from the factory unless it is certified to provide a minimum of 99% efficiency against particles.

Up to 13% longer filter life

IQAir’s New Edition air purifiers feature the most advanced filter-pleating pattern ever designed for a residential system. This technology not only increases airflow, but also increases particulate loading capacity by 13% on the H11 HyperHEPA pre-filter. This saves you money and reduces the frequency of filter replacements.

Multiple Chemical Sensitivity

A significant number of individuals suffer from Multiple Chemical Sensitivity (MCS), characterized by elevated sensitivities to household chemicals. Symptoms can include eye irritation, wheezing, fatigue, rhinitis, sore throat or cough, skin rashes and other symptoms. The best strategy for treating MCS is to avoid the airborne contaminants and chemicals that trigger the illness and reactions. Because indoor air pollution concentrations are typically much higher than outdoor air pollution levels, “air-filtration devices that remove both particulate and chemical substances from breathable indoor air usually benefit MCS patients considerably,” one leading medical expert concluded.

Reviewers rate IQAir air purifiers as the best systems available for MCS sufferers. Most other air purifiers simply are not effective enough to make a real difference in the quality of the air an MCS sufferer breathes. Equally important, IQAir does not use any technologies that add additional MCS triggers into the air, such as ozone or chemicals. And IQAir products are constructed of computer-grade ABS plastics that do not “off-gas” into the air.

320-Degree air exhaust

Most air cleaners return filtered air into the room through a small, noisy outlet that generates annoying drafts. The IQAir GC MultiGas features IQAir’s unique EvenFlow™ Diffuser with 320-degree air delivery. Filtered air is quietly and evenly distributed in all directions. The wide dispersion pattern allows the GC MultiGas to produce an astounding air delivery rate with very little noise.

The purest air possible

The IQAir GC MultiGas air purifier is designed to clean the full spectrum of airborne pollutants with the very best filtration technology available at each of four stages. Air is drawn into the GC MultiGas through the bottom of the system by a powerful IQAir fan, then sequentially cleaned in a step-by-step process that delivers the purest air possible. In addition, IQAir’s unique no-leakage design prevents air from escaping back into the room without being drawn through the GC MultiGas filters. The four filtration stages include:

  1. HyperHEPA particle filtration: The first stage of filtration features a powerful HyperHEPA® pre-filter that removes particles of all sizes, including ultrafine particles.
  2. Cartridge-based activated carbon adsorption: Highest-grade activated carbon is used to filter volatile organic compounds (VOCs), which are responsible for odours.
  3. Cartridge-based chemisorption: This stage destroys harmful chemicals, such as formaldehyde, by an oxidation process inside a chemically active alumina pellet.
  4. Post-filter sleeve: A post-filter sleeve wraps each gas cartridge to prevent media dust from being released.

100% Healthy technology

Our HyperHEPA filtration technology is the safest, healthiest and most effective way to clean the air. The GC MultiGas particle filters work in tandem to remove more than 99 percent of all airborne particles (0.3 microns and larger) without using unsafe or unproven technologies such as ozone generation, ionization, ultraviolet radiation. And the micro-charged filtration post-filter in the GC MultiGas system eliminates any particles that might be released from our carbon and alumina gas, odour and chemical filtration stage. Why risk your health on less effective gimmicks when IQAir’s unique design offers proven protection without harmful byproducts?

The quietest high performance air purifiers ever

The New Edition has an average of 7% less sound across all fan speeds, without sacrificing filter life or system efficiency. You can now have clean, healthy air without disrupting your environment with noise. Our “fan-in-center” design places the fan motor between sound-attenuating filters. The double-walled housing effectively reduces sound transmission. Rubber suspension pads systematically isolate motor vibration from the air cleaner housing. The EvenFlow Diffuser deflects sounds back into the system while returning low turbulence and low velocity air to your room. The result is an air purifier quiet enough for your bedroom.

Swiss quality

Swiss Made is more than just a label of origin. It is a sign of outstanding quality, uniqueness, superior design, innovation, precision and reliability. In an industry where most air cleaners don’t meet manufacturers’ claims, we test and certify each and every IQAir air purification system. We manufacture our air purifiers at our state-of-the-art Swiss production facility on the pristine shores of Lake Constance. By using the highest quality components, a dedicated team of highly skilled and extensively trained specialists, and state-of-the-art manufacturing processes refined for more than 50 years, IQAir is able to build the finest air purifiers in the world. That’s how serious we are about quality.

Energy efficient

The IQAir New Edition costs very little to operate. It only requires about as much power as a conventional light bulb. At the very heart of these air purifiers is the ultra-efficient IQAir New Edition fan and its maintenance-free motor. This amazing powerhouse requires as little as 20 watts of power at the lowest speed and up to a maximum of 135 watts at the highest speed. As a result, it costs only pennies per day to operate.

All plastics are not created equal

IQAir understands that for many people, including those with multiple chemical sensitivities, any odours or chemicals in the air can be a problem. So while the GC MultiGas is unequaled in removing impurities from the air you breathe, it also goes the extra distance to avoid putting anything bad into the air as part of the air purification process. That’s why GC MultiGas components include only the highest quality, non-off-gassing ABS plastics. You can count on years of reliability and sturdiness, without odors and gases being emitted by the system itself.

HyperHEPA® filtration

The H11 HyperHEPA pre-filter in the New Edition GC MultiGas system removes particles of all sizes, including ultrafine particles down to 0.003 microns. This includes allergens, smoke, bacteria and viruses. Also, each gas-phase cartridge in the GC MultiGas is wrapped with a micro-charged post-filter sleeve that removes any additional particles released from the activated carbon adsorption and alumina pellet chemisorption media. The pre-filter and post-filter sleeves work together to deliver a Total System Efficiency of 99% at 0.3 microns or larger, and 95% of all particles down to 0.003 microns.

3D UltraSeal™

The efficiency stated for most air cleaners is purely theoretical. Internal leakage drastically reduces the actual efficiency of most air cleaners. IQAir systems feature patented triple sealing technology. First, a unique manufacturing process ensures that the filter media is 100 percent sealed in the filter frame. Second, our patented 3D UltraSeal ensures perfect knife-edge-in-groove sealing between filter frame and housing. Third, individual seals on each housing module ensure an airtight housing. As a result, IQAir systems have a total system efficiency that is higher than the theoretical efficiency of conventional air cleaners.

New Edition fan

The New Edition features the most powerful fan ever used in a compact room air purifier. That power translates into even better air cleaning results. The new three-dimensionally optimized design now uses state-of-the-art aerodynamics to convert energy into more air and less noise. IQAir systems use the highest quality fan motor available. This fan has an astonishing 1200 m³/h rating. Because each fan is individually balanced and uses steel ball bearings, it outlasts other fans by years. The IQAir New Edition fan is suspended in a separate module that isolates the fan from the housing with eight shock absorbers to further reduce noise.

Sophisticated controls

Every IQAir room air purifier features six fan speeds and its streamlined system controls allow you to easily program automatic operation via a day/night timer. This allows you to cut energy costs and extend filter life by using your GC MultiGas air purifier to clean the air exactly as you need it when you need it. Also, the included intelligent filter-life monitor precisely forecasts filter replacement based on actual usage and colour-coded lights tell you when it’s time to change each filter. Relax and let the system work for you. A sleek and efficient handheld remote control makes it easy to manage your GC MultiGas air purifier from almost anywhere in the room. You can set the fan speed and even timer controls without getting up.


The built-in handle and sturdy casters of the GC MultiGas make it simple to roll around the room or house, providing high-performance air purification wherever you need it.

The best media for superior filtration

The GC MultiGas features the best media in the industry combined with superior filter design to provide an unequaled level of protection against gases, odours, and chemicals. The four disposable gas-phase filter cartridges of the GC MultiGas feature 5.4 kg of the highest-grade activated carbon from bituminous coal, not the lower-quality coconut-shell carbon others use. IQAir also does not use zeolite, another less effective and less expensive filtration medium. Alumina pellets impregnated with potassium permanganate remove formaldehyde from the air. The cylindrical shape of the GC MultiGas cartridges allows for optimal contact between the air and the filtration media, while offering very low air restriction. Meanwhile, post filters wrap each cylinder, preventing any media dust from being released while further improving overall system efficiency.

3-Year warranty

The IQAir GC MultiGas air purifier is an investment in clean air for many years to come. Like all of our air purifiers, each GC MultiGas air purifier is manufactured at our factory in Switzerland to demanding standards that are the highest in the industry. And each system is thoroughly tested and its performance verified before it leaves the factory (see above). As a result, IQAir is proud to cover the GC MultiGas for a full three (3) years against defects in parts and labour. Filters are consumables and exempt from this warranty.

Download Tech Specs Download
General Specifications
Power requirements 220-240 V, 50/60 Hz
Energy consumption, 6 fan speeds* 20, 36, 54, 74, 105, 135 Watt; Standby: <1 Watt
Dimensions H 71 x W 38 x D 41 cm
Weight, system incl. filters 20 kg
Air delivery, incl. filters, 6 fan speeds* 50, 90, 150, 220, 280, 400 m³/h
Sound pressure/power level, 6 fan speeds** LP 22, 33, 41, 47, 52, 57 dB(A); LW 32, 43, 51, 57, 62, 67 dB(A)
Fan motor centrifugal, backward curved, with thermal protector, non-stop use approved
Control panel 4-key touch-pad with 16 character 2-line LCD display
Air intake dual arches at base of system
Air outlet 320° EvenFlow™ diffuser
Color of main housing / locking arms light gray / blue
Housing material non-offgasing, impact-resistant, UV-stabilized ABS
Operating temperature / humidity 5° to 40°C / 5% to 95% non-condensing
Electrical safety certification IEC/IECEE (CB-Scheme), CE, SEV, KTL, GOST-R
Total system efficiency (certified) ≥ 99% for particles ≥ 0.3 μm (individually tested), ≥ 95% at ≥ 0.003 μm
Air delivery (certified) yes (individually tested with all filters installed)
Leak tested yes
Filter Configuration
Pre-filter GC™ HyperHEPA® Pre-Filter H11 (S)
Purpose: control of coarse, fine & ultra-fine dust particles; protection of subsequent filters
Media: non-woven glass microfiber HyperHEPA® filter, non-offgasing separators
Efficiency: ≥ 99% at ≥ 0.3 μm (EN 1822 class H11)
Surface area: 3.0 m²
Average filter life: approx. 15 months (based on average daily usage of 10h on speed 3)****
Gas & odour filter GC™ MultiGas Cartridges
Purpose: control of a wide range or specific chemical substances and odours
Media: 5.4 kg of granular activated carbon & impregnated alumina (AC/4 + IA/4)
Average filter life: approx. 3 years (based on average daily usage of 10h on speed 3)****
Post-filter GC™ Post-Filter Sleeve Set
Purpose: control of fine & ultra-fine particulate matter
Media type: electrostatically charged fiber
Surface area: 0.5 m²
Average filter life: approx. 2 ½ years (based on average daily usage of 10h on speed 3)****
Display languages 4 user-selectable languages: English, French, German, Italian (or Spanish)
Intelligent filter life monitor yes (monitors actual usage of each individual filter), 3 filter life status LEDs
Advanced timer yes (allows programming of operating hours and weekdays)
Advanced fan speed selection yes (allows programming of different fan speeds for 2 different time periods)
Supplied accessories remote control (incl. battery), power cord with plug, deluxe casters, certificate of performance
Optional accessories FlexVac™ & VM FlexVac™ mobile & wall-mounted source capture kits, InFlow™ & OutFlow™positive/negative pressure duct kits, PF40™ coarse dust pre-filter, VMF wall-mount bracket.

Scroll left to view more

* per fan speed measured at 230V, 50Hz; tolerance: ± 10% (± 6 10m³/h); ** tolerance: ± 2 dB(A); *** tolerance: ± 10% **** filter life can vary based on actual usage and pollution levels.

All technical specifications are subject to change without prior notice.

No Content Available
Download Brochure

GC MG Cartridges

Item No. 102 40 16 00 (set of 4)
Destroys harmful chemicals, such as formaldehyde, by an oxidation process inside a chemically active alumina pellet.

Post-filter Sleeves

Item No. 102 50 10 00 (set of 4)
Eliminates activated carbon and chemisorption abrasion particles through a charged fiber structure.

HEPA Pre-Filter H11

Item No. 102 10 12 00
This powerful HypweHEPA pre filter eliminate micro- and nano-particles such as allergens, smoke, bacteria and viruses.