Office Air Quality Monitors: Buyer’s Guide for IT Managers 2026
Poor indoor air quality costs organisations in ways that rarely appear on any spreadsheet: reduced concentration, higher absence rates, and slower cognitive performance. Elevated CO2 levels above 1,000 ppm, common in poorly ventilated meeting rooms, measurably reduce decision-making quality. Office air quality monitors make the invisible visible, giving facilities and IT teams the data to address ventilation issues before they become a productivity or health problem. This guide covers what to measure, which platforms lead in 2026, and how to put data to work.
Quick verdict
Airthings for Business is the strongest choice for most organisations, good sensor accuracy, excellent platform, GDPR-compliant, and integrates with Microsoft 365 and most BMS platforms. Awair Omni is the enterprise-grade alternative with deeper building system integration. For organisations wanting a single platform across occupancy and environment, Kaiterra Sensedge covers both and is WELL-certified. Simple per-room monitoring without a subscription model is best served by Aranet4 (CO2 only) for point checks.
What to measure and why
| Metric | Target range | Impact if outside range |
|---|---|---|
| CO2 (carbon dioxide) | <800 ppm good, <1000 ppm acceptable | >1000 ppm: measurable cognitive performance reduction; >2000 ppm: drowsiness, headaches |
| Relative humidity | 40-60% | Below 30%: dry air, respiratory irritation, static; above 70%: mould risk |
| Temperature | 20-24°C (68-75°F) | Outside range: thermal discomfort, productivity impact |
| VOC (volatile organic compounds) | As low as possible | Off-gassing from furniture, cleaning products, printers; headaches, irritation at elevated levels |
| PM2.5 (fine particulate) | <12 µg/m³ (annual average) | Respiratory and cardiovascular impact at sustained elevated levels |
| Radon | <100 Bq/m³ | Long-term lung cancer risk; relevant for ground-floor and basement offices |
For most offices, CO2, humidity, temperature, and VOC cover the practical monitoring requirements. Radon is relevant if your offices are on the ground floor of a building in a radon-affected area, check your country’s radon mapping data.
Airthings for Business
Airthings is a Norwegian company that has translated its consumer radon and air quality products into a business-grade platform. The Wave Plus (desk unit) and Space Pro (ceiling unit) monitors cover CO2, radon, VOC, humidity, temperature and pressure. The Airthings Business dashboard provides building-wide air quality visualisation, alerts, and reporting. Integration with Microsoft Teams, Slack, and Outlook for room booking data is available.
Strengths: the radon measurement capability is unique in this category, competitors do not offer it. GDPR-compliant (EU operations). Good value for the sensor quality and platform capability. Hardware-agnostic in that the sensors communicate directly to the Airthings cloud via WiFi. Check airthings.com/business for current pricing and device options.
Awair Omni
Awair’s Omni sensor covers CO2, VOC, PM2.5, humidity, temperature, and light levels. The platform is designed for enterprise deployments with API access, BAS/BMS integration (via BACNET and Modbus for HVAC control), and custom dashboard development. Used by organisations pursuing WELL Building Standard certification, Awair is an approved monitoring partner for WELL. Strong choice when the goal is integrated HVAC demand control rather than standalone monitoring. Check getawair.com for current enterprise pricing.
Kaiterra Sensedge
Kaiterra’s Sensedge is the premium option in this category, laboratory-grade sensor accuracy, RESET and WELL certified. It covers PM1, PM2.5, PM10, CO2, TVOC, temperature, and humidity. Kaiterra is used by organisations that need certified, defensible air quality data for green building schemes or regulatory compliance. The price point is accordingly higher than consumer-adjacent platforms like Airthings. Check kaiterra.com for current Sensedge pricing.
Aranet4
The Aranet4 is a standalone CO2 monitor, no subscription, no cloud platform, no integration. It displays the current CO2 reading directly on an e-ink display and logs data internally, readable via Bluetooth to a smartphone. At under €200, it is the right tool for facilities managers who want to check specific rooms on a walkthrough basis or validate that a ventilation fix has worked. It is not the right tool for building-wide continuous monitoring.
Putting air quality data to work
Data without action is expensive decoration. Three practical applications:
- Demand-controlled ventilation (DCV), connect air quality sensors to the building management system so HVAC increases fresh air flow when CO2 rises above a threshold. This is the highest-value integration and typically reduces HVAC energy consumption by 20-30% while improving air quality.
- Room booking integration, surface real-time CO2 levels on room booking panels and digital signage so employees can choose better-ventilated spaces. Airthings and Awair both support this via API.
- Facilities reporting, weekly air quality reports to building management identifying rooms that consistently exceed CO2 thresholds, enabling targeted ventilation audits.
See our smart office IoT guide for the broader sensor deployment approach and our environmental monitoring guide for the full measurement framework.