Swiss-Designed, Full Spectrum Air Filtration
#1 CHOICE FOR MCS, CHEMICALS, ODOURS & TOBACCO SMOKE
Key Features
Advanced Dual-Stage Gas & Particle Filtration
Most air purifiers tackle either particles or gases — the GC MultiGas does both at once. Its two-stage system pairs granular activated carbon gas cartridges with HyperHEPA particle filtration, providing comprehensive protection against the full spectrum of indoor air pollutants. From invisible chemical fumes to ultrafine particles you cannot see, no threat passes through unchecked.
Powerful Gas-Phase Filtration for Gaseous Chemicals & Odours
Four large gas filter cartridges packed with 5.4 kg of granular activated carbon and chemisorption media work together to remove smoke, volatile organic compounds (VOCs) including formaldehyde, as well as chemical pollutants such as nitrogen dioxide and sulphur dioxide. This modular media built for maximum airflow and surface contact improves filtration performance and increases filter life. Ideal for Singapore homes with open-concept kitchens, tobacco smoke concerns, or post-renovation off-gassing, as well as commercial spaces requiring chemical and odour control.
HyperHEPA Ultrafine Particle Filtration
100x More Effective Than Ordinary HEPA
Ultrafine particles make up the vast majority of airborne pollution — and most purifiers miss them entirely. The GC MultiGas uses IQAir’s HyperHEPA pre-filter, independently verified to capture ≥95% of particles down to 0.003 microns. That includes PM2.5, haze particles during Singapore’s dry season, allergens, mould spores, pet dander, bacteria, and viruses.
Ultra-Quiet Performance
Even at higher fan speeds, the GC MultiGas runs quietly — making it suitable for bedrooms, home offices, and living areas where noise is a concern. Its centrifugal fan design delivers consistent, powerful airflow without the disruptive hum often associated with high-capacity air purifiers.
HOW HYPERHEPA PROTECTS YOUR HOME
The Technology That Makes the Difference
IQAir’s HyperHEPA is built to go beyond what “standard HEPA” is certified for. HEPA (High-Efficiency Particulate Air) filtration is widely used and typically certified to capture 99.97% of particles down to 0.3 microns. HyperHEPA takes filtration further with innovative filter media made of ultrafine, electrostatically charged fibres that attract and trap ultrafine particles down to 0.003 microns, helping remove even the smallest and most harmful pollutants, providing unparalleled air quality for users.
GC Multigas | Room Air Purifier
Technical Specifications
| Target pollutants | Filters 95% of particles ≥ 0.003 microns. Removes heavy smoke, cigar odors, complex chemicals, and a wide spectrum of gases and VOCs. PM2.5, PM10, bacteria, viruses, mold spores, and other ultrafine particles. |
| 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) |
| Sound level per fan speed | Sound power: 26, 32, 38, 44, 51, 56, 62, 65 dB(A) Sound pressure: 15, 18, 24, 33, 37, 43, 48, 58 dB(A) at 1 m |
*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).
| Power Requirements | 220-240 VAC, 50/60 Hz |
| Dimensions | 610 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 |
| 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) |
| 32 sq ft (3.0 m²) | GC Filter Cartridge Set |
| Gas & odor filter | 36 – 48 months |
| Media options | <ul><li>GC MultiGas: 12 lbs (5.4 kg) granular activated carbon & impregnated alumina (AC/4 + IA/4)</li> <li>GC VOC: 9 lbs (4.2 kg) granular activated carbon (AC/4)</li> <li>GC ChemiSorber: 17 lbs (7.8 kg) granular impregnated alumina (IA/4)</li> <li>GC AM: 12 lbs (5.4 kg) granular impregnated activated carbon (AC/4-AM)</li></ul> |
| 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) |
Filtration Technology
Stage 1: HyperHEPA Pre-Filter H11
IQAir’s HyperHEPA technology goes beyond standard HEPA, capturing ≥95% of ultrafine airborne particles — including those smaller than 0.1 microns — across a generous 3.0 m² filter surface. This includes PM2.5, haze particles, mould spores, pet dander, allergens, bacteria, and viruses. Independently laboratory-tested, performance is verified down to 0.003 microns — 100 times smaller than what ordinary HEPA filters can trap. Filter life: approximately 12 months (based on 10 hours daily use on speed 3).
Stage 2: GC Filter Cartridge Set — Gas & Odour Removal
Four large gas cartridges containing 5.4 kg of granular activated carbon and impregnated alumina deliver broad-spectrum chemical and odour adsorption. The activated carbon targets VOCs, tobacco smoke, and general odours. The impregnated alumina (chemisorption media) neutralises reactive gases such as formaldehyde, benzene, nitrogen dioxide, and sulphur dioxide — pollutants commonly found in Singapore’s traffic-heavy urban environment and newly constructed or renovated interiors. Filter life: approximately 2 years (based on 10 hours daily use on speed 3).
Product Guide
GC Multigas Brochure
Frequently Asked Questions
The GC MultiGas removes a wide range of indoor air pollutants in two stages. Its gas-phase cartridges adsorb VOCs, formaldehyde, benzene, nitrogen dioxide, sulphur dioxide, tobacco smoke, and cooking odours. The HyperHEPA pre-filter captures ultrafine particles down to 0.003 microns — including PM2.5, haze particles, allergens, bacteria, viruses, mould spores, and pet dander.
Yes — it is one of the best air purifiers for post-renovation environments. Freshly renovated homes commonly have elevated formaldehyde and VOC levels from paint, adhesives, flooring, and new furniture. The GC MultiGas is specifically engineered to neutralise these off-gassing chemicals, making it a practical choice for newly renovated HDB flats, condos, and offices across Singapore.
Yes. During Singapore’s haze season (typically August to October), PM2.5 levels spike significantly from regional forest fires. The HyperHEPA pre-filter in the GC MultiGas is tested to capture ≥95% of particles down to 0.003 microns — making it highly effective at filtering haze particles and smoke-related pollutants during elevated-PSI periods.
A standard HEPA purifier only targets airborne particles. The GC MultiGas adds powerful gas-phase filtration — removing chemicals, VOCs, odours, and gases that particle-only filters cannot address. This makes it the right choice for environments with strong odours, chemical sensitivity, tobacco smoke, or high formaldehyde levels, in addition to particle concerns.
The gas cartridge set typically lasts approximately 2 years under normal indoor use (around 10 hours daily on speed 3). The HyperHEPA pre-filter lasts approximately 12 months. Filter life varies based on local air quality and usage hours — homes near busy roads or in areas with frequent haze may see shorter intervals.
Yes. The GC MultiGas was designed with chemically sensitive individuals in mind. Its high-capacity gas-phase filtration removes a broad spectrum of chemical compounds, reducing exposure to triggers that affect people with MCS, severe allergies, or asthma. It is also used in healthcare facilities, labs, and treatment rooms for this reason.
Yes. The granular activated carbon in the gas cartridges is highly effective at adsorbing strong cooking odours — a common concern in Singapore homes with open-concept kitchens — as well as tobacco and cigar smoke. The GC MultiGas was recognised by Cigar Aficionado magazine for its ability to clear smoke and odours effectively.
You can buy the IQAir GC MultiGas in Singapore through Suprayi.com, operated by Supratechnic (S) Pte Ltd — the authorised IQAir distributor in Singapore. We offer island-wide delivery and dedicated local customer support. Purchasing through an authorised distributor ensures you receive a genuine product with full warranty coverage. Contact us for corporate or bulk order enquiries.
Yes. The GC MultiGas is well-suited for a wide range of commercial environments — including offices, medical and dental clinics, beauty salons, laboratories, printing facilities, and food and beverage outlets. Any space that generates strong odours, chemical fumes, or requires consistent air quality control for staff and customers will benefit from its dual-stage gas and particle filtration. Its quiet operation also makes it practical for client-facing environments where noise is a consideration.
Yes. For commercial settings such as nail salons, laboratories, printing studios, or workshops where solvents, adhesives, and chemical fumes are regularly present, the GC MultiGas provides a strong first line of defence. Its chemisorption media is specifically designed to neutralise reactive chemical compounds beyond what activated carbon alone can handle. For high-exposure environments, we recommend consulting our team to assess the right configuration and number of units for your space.
