What Circul-aire does

Circul-Aire Inc. is a privately held Canadian company founded circa 1970 and headquartered in Saint-Laurent, Quebec, with a secondary office in Anjou. The company designs and manufactures gas-phase filtration and air purification systems built around its proprietary Multi-Mix® chemical filtration media line, which comprises ten specialized formulations (MM-1000 through MM-9000 series) targeting contaminants such as hydrogen sulfide, sulfur dioxide, ammonia, chlorine, and volatile organic compounds. Its equipment portfolio spans air purification systems (APS-400, APS-1000), modular filtration systems, high-density scrubbers, deep bed dry scrubbers, tank vent scrubbers, electrostatic air cleaners, biological safety cabinets, laminar flow clean benches, humidifiers, and supporting monitoring instrumentation (SURVEYOR PLUS™ and Reactivity Monitoring Service).

The company sells directly to end customers on a project-by-project basis, with custom-engineered system designs and no publicly disclosed pricing. Its customers are organized across eight primary segments: industrial (refineries, oil & gas, pulp & paper, power generation), data centers, semiconductor and microelectronics fabrication, wastewater treatment, healthcare, cultural institutions and museums, commercial buildings, and transportation hubs. Revenue is generated primarily through capital equipment sales supplemented by recurring consumable media replacement cycles and ancillary service revenue (TECH-CHEK™ media-life testing, REMO corrosion classification per ISA Standard S71.04). The company holds ISO certification, UL Class 1 listing on Multi-Mix media, and CE/RoHS certifications on electronic air cleaner lines, and maintains an active research collaboration with a local university. There is no evidence of external institutional investment, M&A activity, or public listing.

Name

Circul-aire

Legal name

Circul-Aire Inc.

Website

https://circul-aire.com

Company type

Private

Founded year

1970

Operating status

Operating

Headcount range

11–50 employees

Short description

Circul-Aire Inc. is a privately held Canadian manufacturer founded circa 1970, specializing in proprietary Multi-Mix® gas-phase chemical filtration media and custom-engineered air purification systems serving industrial, data center, semiconductor, wastewater, healthcare, and commercial building customers across North America.

Ownership category

akta.pro rank

Product category

Industrial Air Filtration Equipment

NAICS

Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing (333413)

SIC

Industrial & Commercial Fans & Blowers & Air Purifing Equip (3564)

akta.pro primary industry

Air Quality & Filtration Equipment (IAQ) (IMAHAKAI)

akta.pro secondary industries

Emission Control & Scrubbing Equipment (Scrubbers, Dust Collectors, Catalytic Systems) (IMAHAEAK), Dust Collection & Air Filtration Equipment (Industrial) (IMAHALAF)

Keywords

• Gas-phase filtration systems
• Chemical filtration media
• Air purification equipment
• Industrial odor control
• Corrosion control filtration

Headquarters

HQ city

Montréal

HQ country

Canada

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Marketing or Sales

Revenue model

1. Chemical Filtration Equipment Sales: Sale of air purification systems including APS-400, APS-500, APS-1000, Deep Bed Air Systems, High Density Scrubbers, and related equipment for industrial, commercial, and municipal applications.
2. Multi-Mix® Chemical Media Products: Sale of proprietary chemical filtration media products (MM-1000, MM-1100, MM-3000, MM-7000, MM-9000 series) in various formulations for different contaminant removal applications.
3. Reactivity Monitoring Service (REMO): Diagnostic service using corrosion monitoring coupons to assess environment severity according to ISA Standard S71.04, providing ongoing customer engagement and service revenue.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Circul-Aire designs, manufactures, and supplies gas-phase chemical filtration media (Multi-Mix® series) and engineered air purification systems—including air purification units, deep bed scrubbers, high-density scrubbers, modular filtration systems, tank vent scrubbers, and filter housings—for removal of harmful gases (H2S, SO2, NH3, Cl2, VOCs), odors, and airborne molecular contaminants in industrial, commercial, and municipal environments. The company also provides related services including Reactivity Monitoring (REMO), TECH-CHEK™ media life analysis, and SURVEYOR PLUS™ environmental monitoring systems.

Product overview

Circul-Aire offers a comprehensive portfolio of advanced gas-phase filtration and air purification solutions organized into multiple product categories. The core technology is the proprietary MULTI-MIX filtration media line (MM-1000, MM-1100, MM-1355, MM-1955, MM-3000, MM-3000C, MM-3000LP, MM-7000, MM-9000, MM-9000LP) which serves as the foundation for chemical filtration across all equipment. The equipment portfolio includes Air Purification Systems (APS-400, APS-1000), Modular Filtration System, High Density Scrubber, Deep Bed Air Systems/Dry Scrubbers, Tank Vent Scrubber, and filter housings. Chemical filter offerings include CT-Series cylinders (90% efficiency), Puro series (C, P, F, V), and Media Holding Modules (MM-12, MM-18). The company also provides biological safety cabinets (Class A2, Class B2), laminar flow clean benches, electrostatic air cleaners (AC, DS, FC-ST, FC Series), kitchen exhaust units with photolysis, multiple humidifier types (high-pressure misting, wet-membrane evaporative), and monitoring solutions (SURVEYOR PLUS, Reactivity Monitoring Service). The product ecosystem serves diverse industries including data centers, semiconductor, healthcare, wastewater treatment, oil and gas, pulp and paper, and commercial buildings.

Differentiator

Problem solved

Functional benefit

Brands

• MULTI-MIX®: Proprietary filtration media technology used across Circul-Aire's product line for gas-phase filtration. Includes various formulations like MM-1000, MM-3000, MM-7000, MM-9000 series.
• TECH-CHEK™
• REMO
• SURVEYOR PLUS™

Products and services

• MULTI-MIX® Media MM-1000

Quantifiable outcome

• Energy savings up to 40% or more in data center cooling applications
• +2 more outcomes

Segments8 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

One partnership is on record.

• Local University (Research Partner)coreStrategic or Co-development PartnerCircul-Aire actively collaborates with a local university to conduct groundbreaking research in indoor air quality solutions. This partnership ensures the company provides customers with the most efficient and effective air purification systems available through ongoing innovation and R&D.

Scale indicators2 records

Recent moves5 records

Expansion highlights5 records

Broad incumbents

• Donaldson Company: Large diversified industrial filtration company serving industrial dust collection, engine filtration, and gas-phase filtration markets. Overlaps with Circul-Aire in industrial air purification but on a much larger scale and broader product portfolio.
• MANN+HUMMEL: Global filtration leader with a broad portfolio spanning automotive, industrial, and HVAC filtration. Overlaps with Circul-Aire in industrial air purification and indoor air quality, especially in commercial and life sciences applications.
• AAF Flanders (American Air Filter): Major HVAC and industrial air filtration manufacturer with broad product portfolio including chemical filtration. AAF competes with Circul-Aire in commercial IAQ and industrial gas-phase applications, but as a much larger diversified incumbent.
• Clair (formerly Clarcor Air Filtration): Air filtration product line serving commercial, industrial, and cleanroom markets. Now part of Parker Hannifin, it competes with Circul-Aire in HVAC and specialty gas-phase applications, with broader product depth and global scale.
• Freudenberg Filtration Technologies: Large industrial and automotive filtration company with growing presence in HEPA, ULPA, and gas-phase filtration. Comparable to Circul-Aire in industrial air treatment and semiconductor cleanroom applications.

Direct peers

• Camfil: Global leader in air filtration including gas-phase and molecular filtration. Camfil directly competes with Circul-Aire in industrial and commercial air purification, with a comparable emphasis on molecular contamination control and indoor air quality.
• Koch Filter: U.S.-based manufacturer of air filtration products including chemical filtration media and HVAC filtration. Competes directly with Circul-Aire in commercial and industrial HVAC air quality and gas-phase applications.
• Columbus Industries: Manufacturer of air filtration products including extended surface, pleated, and specialty filters for HVAC and industrial applications. Overlaps with Circul-Aire in commercial and industrial air filtration, with a stronger focus on particulate filters.
• Purafil: Specialty manufacturer of gas-phase filtration media and systems for corrosion control, odor removal, and AMC control. Purafil is one of the closest direct competitors to Circul-Aire's Multi-Mix® offering, serving overlapping data center, semiconductor, and industrial accounts.

Emerging players

• Enmet: Manufacturer of gas detection and air quality monitoring instruments. Enmet is a partial competitor and complementary technology provider for environmental monitoring markets that overlap with Circul-Aire's SURVEYOR PLUS and REMO offerings.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Circul-aire