Air Purifiers and Filter Specialists
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IQAir GC Series NE


The IQAir GC MultiGas model is a world favorite for the removal of odours, chemicals, gases, VOCs, fumes and smoke.  Its unique MultiGas (MG) media will remove deadly nitrogen oxides (NoX) and is particularly effective in the removal of tobacco smoke and salon chemical fumes. The IQAir GC and the larger GCX air purifier series were also developed for the millions of Multi Chemical Sensitivities (MCS) sufferers who can react to a wide range of airborne contaminants.

Research test* results have confirmed the following performance for the GC IQAir system:

Clean Air Delivery Rate (CADR) test results

  • Particulate Matter: 475 m3/h
  • Formaldehyde: 365 m3/h
  • Benzene: 314 m3/h
  • TVOC: 274 m3/h

Note: CADR stands for Clean Air Delivery Rate. It reflects the volume of clean air that an air purifier produces on its highest fan speed setting. The higher the CADR, the faster and more efficient the air purifier is. To achieve good air cleaning results in averagely polluted closed rooms, we recommend that at least 2-3 air changes per hour are aimed for.

Cumulative Clean Mass (CCM) tests results

  • Particulate Matter: 428'209 mg (= that is 35 times more than was needed to achieve the top “P4” classification)
  • Formaldehyde: 13'500-14'000 mg (= that is 9 times more than was needed to achieve the top “F4" classification)

Note: CCM stands for Cumulative Clean Mass and measures the amount of a specific pollutant that the air purifier captures before the CADR drops to 50% of the purifier's original CADR. The higher the particle CCM, the longer period a filter can go before replacement. CCM is a better measure of effectiveness over time than CADR.

The above test results confirm the filtration efficiency and large holding capacity of the IQAir GC MultiGas for airborne particulates and also formaldehyde, organic compounds & chemicals.

Test Report reference No: WCk-17-50002

IQAir GC MultiGas Reduction Rate

A separate test* showed the IQAir GC MultiGas’ decomposability (reductiuon) rate for formaldehyde, benzene and TVOC (Total Volatile Organic Compounds). The results confirmed that the IQAir unit achieved the following reduction rates:

  • Formaldehyde:         96.3 %
  • Benzene:                   90.7 %
  • TVOC:                        92.8 %

Test Report N0: 20101G00189-1

IQAir GC MultiGas: $2,950 incl gst. Shipping costs apply. NOTE: Surcharge may apply to non-metro and remote locations. If in doubt and before placing online order, please call 03 9459 5241 .

BUSINESSES NOTE: 100% gov't instant asset write-off deduction reduces real costs by around 1/3rd.

What our MultiGas users say: 

Lisa - Tasmania: "I'm so happy with my purchase. The woodsmoke pollution from domestic heating in the rural town I live gets extremely bad for about 6 months of the year.  Prior to my purchase, I felt powerless as to the impact of the woodsmoke on my health and wellbeing.  The IQair GC Multigas has saved me from having to move home. It's remarkable and actually saved my health. I think it's what every household needs - I wish I'd heard about it years ago." May 2020

VC from Canberra says: " Over the past few weeks, due to the bushfire crisis, Canberra has been ranked as one of the top cities with the worst air quality in the world. Everyone at home had blocked noses and teary eyes until we got the IQAir GC Multigas. Straight away it cleared the air and we were able to breathe easy again. Now, nobody wants to leave the house anymore! We know bushfire smoke affects our health and the assurance of healthy air that we breath in most of the time at home is priceless.”

Todd – Sydney NSW: "We started with the Healthpro 250 as we are an asthmatic family living close to roadworks and building sites. It improved our situation immediately. In fact, we were so impressed that I then ordered an IQAir GC Multigas for our office where we had infiltrating passive tobacco smoke. Overnight those smells and chemicals disappeared. So now we have purchased another GC Multigas for our home to run in conjunction with the Healthpro. Greatly impressed – IQAir has improved our healthstyle."

  • Product Description
  • Features
  • Specs & Downloads
  • Ask a Question

Product Description

The GC MultiGas has been developed and manufactured to deliberately avoid technologies that could deliver more triggers for MCS sufferers such as ozone or chemicals. As the GC also includes medical grade filtration, the unit offers the most capable and diverse air cleaning system for just about any situation. Some of these chemicals and short and long term effects on our health. Levels of VOCs are generally concentrated in our homes and are emitted by products such as, paints, strippers, building materials, furniture, office equipment, adhesives, cleaning products, disinfectants, cosmetics to name just a few.

For even higher performance, consider the larger model - the IQAir GCX MultiGas


How it works:

The IQAir GC MultiGas features 4 stages of filtration, all sealed within an air tight construction to ensure that every litre of indrawn air is purified - no leakages.

Stage 1 HEPA Prefilter: Air is drawn into the GC MultiGas through the bottom of the unit by the powerful fan and passes through the H11 Grade Prefilter. This process removes all sizes of particles from the air, including ultra fine particulate.

Stage 2 Four Cartridges of gas filtration media: These contain media which will adsorb chemicals, fumes, VOCs, gases, odours and smoke. There are several types of media, depending on the particular contaminants present. The choice of filter type is as follows:

  • MultiGas 50/50 carbon/permanganate blend - all purpose, broadest spectrum chemical and odour capture. Most popular choice.
  • VOC (100% carbon - alcohols, etc)This VOC option helps control the volatile organic compounds that are emitted by a variety of chemicals.
  • ChemiSorber (100% permanganate - thiols, formaldehyde...)
  • AM (for ammonia, amines) By special order only. Click here for acid/ammonia removal information
  • AcidPro (for phenols, acids) By special order only.

Stage 3 The media choice depends on the prevailing chemicals present. Please consult the this Chemicals List to identify those contaminants/chemicals present in your situation and choose the type of filter cartridges required.

Stage 4 Cartridge Sleeves: For the control of fine & ultra-fine particulate matter, these electrostatically charged fiber surfaces capture ultra fine particle matter.

All IQAir products are made from cured ABS computer grade plastics that do not off-gas into the air. IQAir individually test each and every GC air purifier and the results of each test are hand-signed and include with each unit upon shipping from the IQAir factory.


  • Removes chemicals, solvents, odours, gases
  • Removes 95% particles @ .003 microns, 99% @ .3 microns
  • Coverage area +100 sq mts
  • 6 speed settings
  • Quiet operation 30 - 57 dBA
  • Ozone free
  • Long life filters >3 years
  • Light, on easy-roll casters
  • Draft free air flow
  • Daily 24/7 on/off timer & run hours program
  • Tamper proof control feature
  • Filter replacement lights and hours monitor
  • Remote Control
  • Adjustable filter setting to suit conditions

Specs & Downloads

Broch symbol

Click here to download the GC series Specifications

Click here for Filter Life Calculations

Click here for List of Chemicals and Removal options


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