The IAQ Sensors & Monitors category focuses on the indoor air quality instruments used to measure what occupants cannot see: CO₂ levels, particulate matter, VOCs, temperature, humidity and other IAQ indicators. These devices help verify ventilation performance, troubleshoot comfort complaints and document air quality in homes and light-commercial spaces.
Here you’ll find CO₂ monitors, PM2.5/PM10 particulate sensors, VOC and formaldehyde monitors, temperature and relative humidity sensors, multi-parameter IAQ loggers and display-style room monitors. Many models offer data logging, alarm thresholds, wireless connectivity and integration with HVAC controls or building automation systems.
When selecting IAQ sensors and monitors, consider which parameters you need to measure, sensor accuracy, calibration method, logging interval, communication type (standalone, Wi-Fi, BACnet, Modbus) and mounting style. Matching the device to the application—spot checks, continuous monitoring or integration with controls—helps you deliver better IAQ recommendations to customers.
Pro tip: Pair a CO₂ + RH + temperature monitor with a PM2.5 particulate sensor when diagnosing comfort or “stale air” complaints. Use logged data to show before/after results when adjusting ventilation rates, filtration or run-time schedules.

IAQ sensors and monitors for HVAC technicians including CO₂ monitors, particulate (PM2.5/PM10) sensors, VOC and formaldehyde monitors, temperature and humidity sensors, multi-parameter IAQ stations and data-logging indoor air quality monitors for homes and light-commercial buildings.