IQAir GC Multigas: Review & Specs

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Rating: 9.5 / 10
Covers up to 1,200 sq.ft.
Removes particles > 0.003 microns
Long 12-Month Filter Life
Medical-Grade Air Purifier

iqair gc multigas

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The IQAir GC Multigas Air Purifier is one of the all-around top choices for removing gaseous and chemical contaminants from your environment. IQAir’s GC Multigas includes a high-efficiency HEPA pre-filter, four large gas filter cartridges, and 4 post-filter sleeves. It uses up to 17 pounds of specifically formulated gas phase filter media to remove harmful gases, chemicals, Volatile Organic Compounds (VOCs), smoke, formaldehyde, and other dangerous contaminants from your home or business.

The air purification unit also filters out micro-pollutants and nano-particles such as spores, pollen, ragweed, pet dander, dust, bacteria, and viruses.

iqair gc multigas

IQAir GC Multigas Air Purifier Key Facts

The IQAir GC Multigas is a compact air purifier for gas, smoke, chemical, and particulate filtration which releases no ozone, no ions, and has no “off-gassing” of plastic.

1) It ensures particulate filtration. It has two particle filters that work together to provide a reduction of greater than 99% of all airborne hazards.

2) It protects the air in your home or office from the following chemicals: Acetic acid, Acetone, Acrolein, Acrylonitrile, Benzene, 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 sulfide, Methyl vinyl ketone, Methylamine, Nitroglycerine, Ozone, Phenol, Skatole, Styrene, Sulfur trioxide, Trichloroethylene, Tri hylamine, Trimethylamine, and Vinyl chloride.

3) It can easily clean an area up to 1200 sq. ft. As a result, the GC Multigas is frequently used in hospitals and medical laboratories throughout the world, making it the overall best air purifier for smoke on our list for medical facilities.

4) The unit offers several display languages including English, French, German, and Spanish.

5) It includes four customizable gas filter packages that enable you to adapt the purifier to fit your unique filtration needs.

6) The IQAir GC Multigas air purifier smoke eater can purify your environment from gases and odors caused by tobacco smoke, smog, diesel fuel, VOCs, ammonia, and more.

7) Using two particle filters, it purifies common allergen particles and other symptom-aggravating impurities.

8) It uses the highest quality fan motors for maximum efficiency and long-lasting durability.

9) The sophisticated control panel of the IQAir GC Multigas ensures an easy-operation system. The programmable timetable also helps you operate the purifier to fit your needs with minimal time and effort.

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iqair gc multigas


Triple-Seal Filter Technology

The triple-seal filter technology of the IQAir GC Multigas ensures the removal of 99% airborne particles and chemical traces sized 0.3 microns and larger. The GC Series air cleaner puts a stop to air leakage in three ways:

1) A unique sealing process which ensures that the air cleaner filter media is 100% sealed within the filter frame.

2) The patented 3D UltraSeal does not allow any air to by-pass the filters.

3) Individual seals on each housing module confirm airtight closing around all four of the filters.

IQAir GC Multigas Review & Overall Recommendation

The IQAir GC Multigas is the best-in-class choice for anyone with Multiple Chemical Sensitivities (MCS) or moderate-to-severe allergies, and anyone who wants to remove not only the smell of smoke, but also the dangerous gases and contaminants that accompany it. While priced higher than many common household air purifiers, the IQAir GC Multigas easily outperforms commercial units that cost thousands of dollars more.

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IQAir GC Multigas


Effectiveness for Smoke









  • one of the absolute best air purifiers for smoke on the market
  • attractive appearance blends with nearly any decor
  • low-noise operation means no getting woken up in the middle of the night
  • huge air output can purify even the largest rooms


  • like all medical-grade products, the IQAir GC Multigas isn't the cheapest air purifier
  • because of it's high-end performance, filter replacements can cost more than with less powerful units
  • not everyone needs an air purifier that covers such a large square footage