GC MultiGas | Room Air Purifier
Advanced air purifier for effective filtration of gaseous chemicals, odours, and particles.
The GC MultiGas is a top-rated air purifier designed for effective filtration of a wide range of gaseous chemicals, odours, and particles. Engineered specifically to combat odours and gases, it also efficiently removes particles, dust, airborne viruses, and bacteria. This air purifier is ideal for individuals with chemical sensitivities, cigar smokers, and environments plagued by odour issues. It is highly recommended for newly renovated or redecorated spaces, areas with formaldehyde pollution, and elevated TVOC levels.
Dimensions: Height: 71 x Width: 38 x Depth: 41 cm
Room size: Medium to large, up to 83 m2
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Key Features
The IQAir GC MultiGas delivers advanced air purification with powerful gas and odor removal, a high-capacity multi-cartridge design, and long-lasting filters. Paired with HyperHEPA technology, it offers ultra-quiet, medical-grade air cleaning for homes, offices, and sensitive environments.
Effectively removes even the smallest airborne particles
HyperHEPA Filtration
Traps coarse particles like pollen, pet dander,and mold spores.
Pre Max Micro-Particle Filtration
The GC Series provides soft, low decibel sound across all fan speeds.
Ultra-quiet performance
Filters volatile organic compounds (the cause of odors) and other harmful chemicals like formaldehyde.
V5 Cell Granular Activated Carbon
2 Filtration stages to effectively remove ≥95% of all airborne particles and odours
GC Filter Cartridges MG/S MultiGas - Stage 2
Highly effective at removing a wide range of gaseous air pollutants and odors, using a combination of granular activated carbon and chemisorption media. This effectiveness comes from both the quantity and quality of the filtration media used, which far exceeds what’s found in typical consumer-grade air purifiers.
HEPA Pre-Filter H11 (S) - Stage 1
The HyperHEPA technology has been tested and shown to remove ≥95% of all airborne particles, including those particles down in the ultra-fine particle size range (<0.1 µm in diameter). Special laboratories equipped with extremely precise measure equipment (some measuring down to 0.003 µm) verified performance beyond the requirements of HEPA.
Air Purification
For multiple chemical sensitivity & tobacco smoke
A layered blend of activated carbon and proprietary media tailored to adsorb a wide spectrum of gaseous pollutants, including volatile organic compounds (VOCs), ozone, and various chemical fumes.
Removes allergens, bacteria, viruses, mold spores, harmful dust, smoke, PM2.5, PM10, and other fine and ultrafine particles and particle-bound odors.
Smart MultiGas filtration for effective purification for medium to large size rooms.
Comfortably change the fan speeds
See what the experts say...
When searching for a machine that prioritizes chemical and gas removal, certain names consistently rise to the top. The IQAir GC MultiGas is engineered from the ground up to address this specific challenge.
— ConsumersBest.orgBen Carter
Exceptional air cleaning performance with PM2.5 reduced to 0.1, PM10 to .2, and AQI to 1 in one hour.
— Modern CastleDerek Hales, Founder and Editor-in-Chief of ModernCastle.com
If you’re more concerned with odors and gases and you want the best of the best, the MultiGas is the clear choice and is worth the extra cost.
— Vacuum WarsChristopher White is the CEO of Vacuum Wars
Comprehensive filtration for gases, odours & ultrafine particles with HyperHEPA technology
HyperHEPA Filtration
Though the GC MultiGas system focuses on gases, it’s typically used with IQAir’s HyperHEPA filter, which captures particles down to 0.003 microns—ultrafine particles most other purifiers miss.This combination delivers comprehensive filtration: gases, odors, and ultrafine particles (PM2.5, PM0.3, viruses, allergens, etc.).
Multi-cartridge design for maximum efficiency
Each GC MultiGas system contains four large gas filter cartridges, designed for maximum airflow and surface contact. This modular configuration enhances gas-phase filtration performance, increases filter life, and ensures consistent removal of chemical fumes, smoke, and harmful gases from indoor environments.
Long-lasting filters with high adsorption capacity
IQAir GC MultiGas filters are engineered for durability, with a high-capacity design that allows for 6 to 18 months of consistent use under normal indoor conditions. The generous amount of filtration media ensures long-term protection from gases and odors without frequent replacements, making it a cost-effective air purifier filter solution.
★★★★★ Overall rating 4.8 (179) reviews
The air purifier trusted by allergy sufferers, mcs patients & professionals worldwide
★★★★★ No other removes smoke in the air like this one
This is an outstanding product...! I live in an apartment in NYC with a lot of chain smokers and their smoke was invading my unit to the point that my clean clothing in my closet was smelling Tabacco...Thank(s) to the MultGas air purifier; I do not smell it any more and my air is clean. It works like a miracle.
– Anonymous NYC Verified Purchaser
★★★★★ Formaldehyde Nightmare
Don't waste your money on any other if you have any inkling of a VOC issue because I spent thousands on others that didn't cut the gas. I had 3 in the main room even that could not do what one IQ Multigas did.g.
– Anonymous Council Bluffs IA Verified Purchaser
★★★★ Best air filter I know
We bought an IQAir 14 years ago. It worked extremely well but naturally performed less over time. It was slightly more expensive to replace the filters than to buy a new unit, so we bought a new GC MultiGas. I waited so long due to the high cost. Just like before, the air quality is outstanding and has helped my wife's allergies.
– Aaron V Southern California Verified Purchaser
GC MultiGas | Room Air Purifier
Technical Specifications
General specifications
Power requirements:
220-240 VAC, 50/60 Hz
Dimensions:
710 x 380 x 410 mm (H x W x D)
Weight, system incl. filter:
16 kg
Color of main housing / locking arms:
Light grey / white
Device control:
Control panel, remote control
Supplied accessories:
Remote control, power cord, casters, certificate of performance
Air cleaning performance
Airflow, 6 fan speeds*:
50, 100, 170, 240, 310, 440 m3/h
Power consumption*, 6 fan speeds:
20, 36, 54, 74, 105, 135 W
Sound power level (LWA)**, 6 fan speeds:
32, 43, 51, 57, 62, 67 dB(A)
*per fan speed, measured at 230V/50Hz; tolerance ±(10% + 10 m3/h)
** tolerance: ±3 dB(A)
¹ In independent laboratory testing, the HyperHEPA filter was >99.9% effective at filtering Staphylococcus aureus bacteria, and the HealthPro series air cleaner with HyperHEPA filter was >99.9% effective at filtering Staphylococcus albus bacteria, and ≥99.52% effective at filtering Escherichia coli bacteria.
² In independent laboratory testing, the HealthPro series air cleaner with HyperHEPA filter achieved 99.9% reduction of the Influenza A (H1N1) virus, and >99.9% reduction of Human coronavirus HCoV-229E (ATCC VR-740), and >99.9% reduction of Human enterovirus 71 (ATCC VR-1432).
Filters
Pre-filter
GC HEPA Pre-Filter H11 (S)
Efficiency: ≥95% at ≥0.3 microns (EN 1822 class H11).
Surface area: 32 sq ft (3.0 m²).
Average filter life: Approx. 12 months (based on average daily usage of 10 h on speed 3).
Gas & odor filter
GC Filter Cartridge Set
Media options:
- GC MultiGas: 12 lbs (5.4 kg) granular activated carbon & impregnated alumina (AC/4 + IA/4)
- GC VOC: 9 lbs (4.2 kg) granular activated carbon (AC/4)
- GC ChemiSorber: 17 lbs (7.8 kg) granular impregnated alumina (IA/4)
- GC AM: 12 lbs (5.4 kg) granular impregnated activated carbon (AC/4-AM)
Average filter life: Approx. 2 years (based on average daily usage of 10 h on speed 3).
Post-filter
GC Post-Filter Sleeve Set
Surface area: 5.4 sq ft (0.5 m²).
Average filter life: Approx. 2 ½ years (based on average daily usage of 10 h on speed 3).
Documents
References
¹ Assuming a 2.4m ceiling height, and 2 ACH (Air Changes per Hour).
² In independent laboratory testing, the HyperHEPA filter was >99.9% effective at filtering Staphylococcus aureus bacteria, and the HealthPro series air cleaner with HyperHEPA filter was >99.9% effective at filtering Staphylococcus albus bacteria, and ≥99.52% effective at filtering Escherichia coli bacteria.
³ In independent laboratory testing, the HealthPro series air cleaner with HyperHEPA filter achieved 99.9% reduction of the Influenza A (H1N1) virus, and >99.9% reduction of Human coronavirus HCoV-229E (ATCC VR-740), and >99.9% reduction of Human enterovirus 71 (ATCC VR-1432).
FAQs
IQAir GC MultiGas
The GC MultiGas removes harmful gases, odors, VOCs (volatile organic compounds), smoke, and chemicals using activated carbon and chemisorption filtration. It also captures ultrafine particles down to 0.003 microns with HyperHEPA technology.
Yes. The GC MultiGas is ideal for people with allergies, asthma, and Multiple Chemical Sensitivity (MCS). It filters both airborne particles and gases that can trigger respiratory issues.
The gas-phase filters typically last 6 to 18 months, depending on air quality and usage. The HyperHEPA particle filter can last up to 12 months under normal indoor conditions.
Yes. It effectively removes smoke particles and smoke-related gases like benzene, acrolein, and formaldehyde, making it one of the best air purifiers for wildfire smoke and tobacco smoke exposure.
No. It features an ultra-quiet mode, and even on higher fan speeds, it remains quieter than many comparable air purifiers, making it suitable for bedrooms and offices.