20+ years of air sensing expertise. From R&D to production and testing, MAXMAC delivers integrated IAQ and environmental control solutions for global HVAC, automotive, cold chain, and air purification applications.
Building an air quality system often means managing multiple sensors, suppliers, calibration processes, communication interfaces, and long-term maintenance requirements. MAXMAC helps OEMs simplify that complexity with customized IAQ sensor modules built around your exact application needs.
Choose from PM, CO₂, temperature, humidity, TVOC, AQS, and other gas sensing options. Our team handles module integration, firmware tuning, multi-point calibration, testing, and mass production delivery — with one communication interface for complete sensor data output and long-term stable performance.
Air quality sensing, ventilation control and fragrance integration for HVAC equipment, appliances and room-level control systems.
Refrigerant leak detection for heat pumps, air conditioners and commercial refrigeration equipment.
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Connect multi-parameter sensors, IAQ monitors and HVAC controllers for indoor air quality monitoring.
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NDIR CO2 sensing for vehicle cabins, ventilation control, indoor monitoring and OEM integration.
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Coordinate PM2.5, CO2 and AQS sensing with smart cockpit displays and intelligent vehicle HVAC control.
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Connect room-level air quality sensing with fresh-air ventilation, heating and zoned airflow control.
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Use room-level air quality data and zoned dampers to deliver fresh air where it is needed.
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Integrate automotive-grade refrigerant leak sensing into EV thermal management and vehicle HVAC systems.
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Integrate A29 and A32 fragrance modules with residential fresh-air terminals and air-conditioning systems.
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Connect automotive fragrance modules with vehicle HVAC, LIN communication and cockpit controls.
Read MoreMAXMAC combines calibration, defect control, environmental validation and full MES traceability to support stable air quality sensor performance for OEM projects.
MAXMAC sensors go through in-process calibration and final pre-shipment verification before delivery. This helps ensure each unit performs within a consistent measurement range, reducing batch variation, system tuning time, and follow-up maintenance for OEM customers. View details of our dual-calibration process
MAXMAC is a Gas Sensor & IAQ Solutions Manufacturer in China, focused on air sensing, purification, and environmental control since 2004. We provide integrated R&D, manufacturing, calibration, testing, and delivery support for OEMs, system integrators, HVAC equipment manufacturers, and air quality solution providers.
Our portfolio covers gas sensors, PM sensors, CO₂ sensors, temperature and humidity sensors, TVOC / AQS modules, ionizers, thermistors, HVAC components, and fragrance modules. From product selection and custom development to validation and mass production, MAXMAC helps customers build reliable air quality systems with stable data output and production-ready quality control.
With 20+ years of industry experience, a 38,235 m² manufacturing base, full MES traceability, and ISO / IATF / CNAS-certified capabilities, MAXMAC has supported 30+ automotive OEM programs, 10+ HVAC and HVAC equipment manufacturers, and 100+ small and mid-sized B2B customers worldwide.
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159
Patents
3
R&D & Production Bases
120+
R&D Staff
ISO
IATF 16949 Certified
9
Countries & Regions
As a professional manufacturer of air quality sensors and modules, our products come with a wide range of certifications and test reports to ensure quality, safety, and performance. These include ISO 14001, ISO 45001, ISO 9001, IATF 16949, CNAS laboratory accreditation, and more. These certifications reflect our commitment to delivering reliable air quality sensing solutions that meet global standards.
MAXMAC provides air quality sensor modules, gas sensors, PM sensors, AQS sensors, fragrance modules, ionizer modules and HVAC control related components for OEM projects.
Our products are used in automotive cabin air management, HVAC systems, air purifiers, consumer electronics, commercial buildings, refrigeration equipment and industrial gas safety monitoring.
Yes. MAXMAC supports sensor selection, module customization, interface adaptation, structural cooperation and project validation for customers with OEM or ODM requirements.
Sample support is available for qualified projects. Our team can recommend suitable models and provide sample, test and validation guidance based on your application scenario.
Lead time depends on product type, customization scope and order quantity. Standard samples are usually faster, while customized modules require confirmation, development and validation time.
MAXMAC applies calibration validation, defect control, environmental testing, measurement accuracy verification and full MES traceability to support stable automotive-grade delivery.
Yes. MAXMAC develops air quality sensing solutions for automotive cabin health, CO2 management, PM2.5 monitoring, outside air quality detection and in-cabin fragrance systems.
You can share your target gas or particle type, installation space, output interface, working environment and production plan. Our engineers will help match a suitable product or solution.
Low GWP targets, PFAS replacement, EV heat pump efficiency, and integrated thermal management are reshaping refrigerant choices.
From working principles and system architecture to application scenarios, understand the key advantages of the NDIR approach.
Understand in-cabin and outside-air PM2.5 detection, recirculation switching, purifier activation, and filter life evaluation.
Learn how CO₂ sensors measure concentration through infrared absorption and support HVAC, fresh air, and industrial applications.
Our product experts will provide the most suitable air solutions and product recommendations.
