Carbon Dioxide (CO2)-Based Ventilation Controller Global Market Report 2025

The carbon dioxide (CO₂)-based ventilation controller market size has grown strongly in recent years. It will grow from $2.55 billion in 2024 to $2.78 billion in 2025 at a compound annual growth rate (CAGR) of 9%. The growth in the historic period can be attributed to increasing awareness of indoor air quality, rising demand for energy-efficient buildings, growth in commercial and residential construction, government regulations on ventilation standards, and adoption of smart building technologies.

The carbon dioxide (CO₂)-based ventilation controller market size is expected to see strong growth in the next few years. It will grow to $3.88 billion in 2029 at a compound annual growth rate (CAGR) of 8.7%. The growth in the forecast period can be attributed to the expansion of smart and connected building systems, growing focus on energy savings and sustainability, rising health consciousness among occupants, advancements in sensor technologies, and increasing retrofitting of older HVAC systems. Key trends in the forecast period include integration with IoT and building management systems, adoption of demand-controlled ventilation, development of low-maintenance and high-precision sensors, expansion in emerging markets, and use of AI and predictive analytics for ventilation optimization.

The increasing focus on indoor air quality is expected to drive the growth of the carbon dioxide (CO₂)-based ventilation controller market in the coming years. Indoor air quality refers to the condition of air inside buildings, including the presence of pollutants, temperature, humidity, and ventilation, which impact occupants’ health and comfort. The rise in awareness of indoor air quality is driven by growing health consciousness, as cleaner indoor air reduces respiratory issues and supports overall well-being. CO₂-based ventilation controllers improve indoor air quality by automatically adjusting airflow based on CO₂ levels, ensuring optimal ventilation and reducing indoor pollutant concentrations. For example, in June 2025, GOV.UK reported that in 2024, annual mean concentrations of NO₂ decreased by 8% at urban background sites and by 6% at roadside sites compared to 2023 levels, reflecting broader awareness of air quality issues. This demonstrates how the focus on indoor air quality is propelling the carbon dioxide (CO₂)-based ventilation controller market.

Key companies in the carbon dioxide (CO₂)-based ventilation controller market are investing in innovations such as NDIR sensors to provide highly accurate and stable CO₂ measurements, enabling precise demand-controlled ventilation, improving indoor air quality, and reducing energy consumption. NDIR sensors are non-dispersive infrared sensors that measure gas concentrations by detecting absorption of specific infrared light wavelengths. For instance, in March 2023, Vaisala Oyj, a Finland-based industrial and environmental measurement solutions company, expanded its HVAC portfolio with the GMD110 duct-mounted CO₂ transmitter. The GMD110 incorporates Vaisala’s advanced CARBOCAP NDIR sensor technology, offering long-term accuracy, stability, and reduced maintenance needs. Designed with an IP65-rated enclosure, it delivers reliable performance in environments exposed to dust, humidity, or chemical interference. By enabling precise demand-controlled ventilation, the GMD110 enhances energy efficiency, promotes sustainability, and supports healthier indoor air quality.

In January 2024, Lindab, a Sweden-based provider of ventilation systems for energy-efficient buildings and healthy indoor climates, acquired Airmaster A/S for an undisclosed amount. This acquisition allows Lindab to expand its decentralized ventilation product portfolio, enhance energy-efficient indoor air quality solutions, and strengthen its presence in key European markets. Airmaster A/S is a Denmark-based company offering flexible and intelligent decentralized ventilation solutions and accessories.

Major players in the carbon dioxide (CO₂)-based ventilation controller market are Siemens AG, Schneider Electric SE, Honeywell International Inc., ABB Ltd., Johnson Controls International plc, Trane Technologies plc, Delta Electronics Inc., Legrand SA, Vaisala Oyj, TROX GmbH, Dwyer Instruments Inc., Veris Industries LLC, KMC Controls Inc., Rotronic AG, Greystone Energy Systems Inc., Senseair AB, E+E Elektronik Ges.m.b.H., Belimo Holding AG, Ventilation Control Products Ltd., Calibration Technologies Inc., Sauter AG, and CO2Meter.com.

North America was the largest region in the carbon dioxide (CO₂)-based ventilation controller market in 2024. Asia-Pacific is expected to be the fastest-growing region in the forecast period. The regions covered in carbon dioxide (CO₂)-based ventilation controller report are Asia-Pacific, Western Europe, Eastern Europe, North America, South America, Middle East and Africa. The countries covered in the carbon dioxide (CO₂)-based ventilation controller market report are Australia, Brazil, China, France, Germany, India, Indonesia, Japan, Russia, South Korea, UK, USA, Canada, Italy, Spain.

Note that the outlook for this market is being affected by rapid changes in trade relations and tariffs globally. The report will be updated prior to delivery to reflect the latest status, including revised forecasts and quantified impact analysis. The report’s Recommendations and Conclusions sections will be updated to give strategies for entities dealing with the fast-moving international environment.

The rapid rise in U.S. tariffs and the subsequent trade frictions in spring 2025 are having a major impact on the electrical and electronics sector, with semiconductors, display panels, and rare-earth metals (essential for batteries and motors) subject to steep duties. Consumer electronics brands face profit erosion, as competitive markets limit their ability to pass costs to buyers. Industrial electronics manufacturers, meanwhile, grapple with delayed projects due to shortages of tariff-impacted components like printed circuit boards. Companies are responding by relocating assembly to tariff-exempt countries, increasing inventory buffers, and redesigning products to reduce dependency on restricted materials.

The carbon dioxide (CO₂)-based ventilation controller market research report is one of a series of new reports that provides carbon dioxide (CO₂)-based ventilation controller market statistics, including carbon dioxide (CO₂)-based ventilation controller industry global market size, regional shares, competitors with a carbon dioxide (CO₂)-based ventilation controller market share, detailed carbon dioxide (CO₂)-based ventilation controller market segments, market trends and opportunities, and any further data you may need to thrive in the carbon dioxide (CO₂)-based ventilation controller industry. This carbon dioxide (CO₂)-based ventilation controller market research report delivers a complete perspective of everything you need, with an in-depth analysis of the current and future scenario of the industry.

A carbon dioxide (CO₂)-based ventilation controller is an automated system that manages indoor ventilation based on the concentration of CO₂ in the air. Using precise CO₂ sensors, the system continuously monitors air quality and adjusts the ventilation rate to maintain a healthy and comfortable environment. When CO₂ levels rise, typically due to higher occupancy or activity, the controller increases ventilation to introduce fresh air and remove stale air. Once CO₂ levels return to acceptable limits, it reduces ventilation to conserve energy.

The key product types of carbon dioxide (CO₂)-based ventilation controllers include standalone controllers, integrated systems, wireless controllers, and wired controllers. Standalone controllers are independent ventilation management devices designed to regulate airflow, temperature, and indoor air quality within a specific zone or facility without relying on centralized building management systems. The control technologies include demand-controlled ventilation, fixed airflow control, and hybrid systems. Based on sensor type, the systems use NDIR, chemical, infrared, and other sensors. Key applications include commercial buildings, residential buildings, industrial facilities, healthcare centers, educational institutions, and others. These products are distributed through direct sales, distributors, online retail, and other channels.

The carbon dioxide (CO₂)-based ventilation controller market consists of sales of CO₂ sensors, ventilation controllers, air handling units, duct-mounted transmitters, demand-controlled ventilation systems, HVAC actuators, control panels, and data loggers. Values in this market are ‘factory gate’ values, that is the value of goods sold by the manufacturers or creators of the goods, whether to other entities (including downstream manufacturers, wholesalers, distributors and retailers) or directly to end customers. The value of goods in this market includes related services sold by the creators of the goods.

The market value is defined as the revenues that enterprises gain from the sale of goods and/or services within the specified market and geography through sales, grants, or donations in terms of the currency (in USD unless otherwise specified).

The revenues for a specified geography are consumption values that are revenues generated by organizations in the specified geography within the market, irrespective of where they are produced. It does not include revenues from resales along the supply chain, either further along the supply chain or as part of other products.

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