Indoor environmental quality is the full picture of what occupants experience — not just air quality, but thermal comfort, humidity, lighting, acoustics, and the HVAC maintenance decisions behind each of them. OxMaint's analytics and reporting platform connects IEQ sensor data, HVAC asset records, and maintenance activity into one dashboard — so facility teams see what conditions are, why they drifted, and what maintenance action closed the gap. Book a demo to see IEQ-linked maintenance analytics for your building portfolio.
Article · Smart Buildings · IEQ & Analytics
IEQ Monitoring for
Smart Buildings & Facility Teams
Track indoor environmental quality across HVAC, humidity, CO2, comfort, and lighting — and connect every threshold breach to the maintenance work order that resolves it.
IEQ Dashboard Overview
CO2
847 ppm
Good
Target: below 1,000 ppm
PM2.5
8.2 µg/m³
Good
Target: below 12 µg/m³
Humidity
54%
Good
Target: 30–60% RH
VOC
612 µg/m³
Alert
Target: below 400 µg/m³
Temp
22.4°C
Good
Target: 20–24°C (ASHRAE 55)
Open WOs
2
In Progress
VOC — AHU-07 zone filter
What Is IEQ
IAQ vs. IEQ — Why the Distinction Matters for Facility Teams
Indoor Air Quality (IAQ) covers airborne parameters — CO2, PM2.5, VOCs, humidity. Indoor Environmental Quality (IEQ) is broader: it adds thermal comfort, lighting levels, acoustic performance, and the occupant experience of the space as a whole. WELL v2 and LEED v4.1 certification programmes score IEQ across all these dimensions, not just air quality. Facility teams managing only air quality metrics miss the thermal comfort failures, flickering controls, and zone imbalances that generate occupant complaints and reduce building scores even when air quality is compliant.
IAQ
CO2 concentration
PM2.5 / PM10
VOC / TVOC levels
Relative humidity
Carbon monoxide
+
IEQ Adds
Thermal comfort (ASHRAE 55)
Lighting levels & daylight
Acoustic performance
Occupant satisfaction metrics
HVAC zone balance
=
IEQ Score
WELL v2 certification input
LEED v4.1 credit evidence
Lease & valuation differentiator
Compliance documentation
Occupant retention metric
Compliance Frameworks
IEQ Certification Requirements — What Each Framework Demands
| Framework |
Key IEQ Requirement |
Monitoring Needed |
OxMaint Role |
| ASHRAE 62.1-2025 |
Dynamic ventilation tied to real-time CO2 and occupancy |
Continuous CO2 per zone |
Threshold-triggered AHU work orders + documentation export |
| WELL v2 |
PM2.5, VOC, CO2, humidity, thermal, lighting thresholds |
Continuous multi-parameter monitoring |
All-parameter compliance dashboard + audit export |
| LEED v4.1 |
IAQ performance with documented corrective actions |
Continuous monitoring + maintenance evidence |
Sensor-to-work-order audit trail per zone |
| EPA Guidelines |
Ventilation documentation, pollutant response records |
CO2, PM2.5, VOC spot and continuous |
Compliance log export — fines from $10,000 for documentation gaps |
| ASHRAE 55 |
Thermal comfort — temperature and humidity within ranges |
Zone-level temperature and RH |
Comfort drift alerts linked to VAV and AHU work orders |
One Dashboard for All Your IEQ Data
OxMaint connects sensor feeds, HVAC asset records, maintenance work orders, and compliance exports into one platform for smart building and facility teams.
Expert Review
"The buildings that perform best in the coming years will be those that use data effectively. Indoor air quality monitoring, predictive maintenance, and automated HVAC controls are transforming buildings into responsive environments that adapt to changing conditions. Facility managers who maintain healthier indoor spaces while also improving operational efficiency will be the ones who retain tenants, achieve certification scores, and demonstrate measurable value per square foot — not those managing to a quarterly checklist."
— Building Air Quality Trends 2026, Capitol Hill Times / OxMaint Smart Building Review
Common Questions
Frequently Asked Questions
What is the difference between IEQ monitoring and standard building automation system dashboards?
Standard BAS dashboards show HVAC set points, equipment run status, and alarm states — they are system-focused. IEQ monitoring tracks the environmental outcomes experienced by occupants: CO2, PM2.5, VOCs, humidity, temperature, and lighting levels against occupant comfort and compliance thresholds. OxMaint's IEQ dashboard connects those environmental readings to the HVAC and maintenance actions responsible for them — so when a CO2 threshold is breached, the system identifies which AHU zone is responsible, generates a corrective work order, and records the closure for compliance evidence. The BAS shows equipment state; OxMaint shows occupant environment and maintenance response.
Sign up free to set up your IEQ dashboard.
How does thermal comfort data from IEQ monitoring connect to HVAC maintenance work orders?
Zone-level temperature deviating from the ASHRAE 55 comfort range — typically 20–24°C — can indicate VAV actuator failure, damper control drift, zone balancing problems, or AHU supply air temperature deviation. OxMaint configures thermal comfort thresholds per zone, and when a zone persistently deviates from set point, a diagnostic work order is generated against the responsible VAV box or AHU. This converts the occupant comfort complaint — which typically arrives as a service desk ticket — into a proactive maintenance event triggered by the monitoring data before the complaint is filed.
Book a demo to see thermal comfort work order configuration.
What sensor types does OxMaint support for IEQ monitoring integration?
OxMaint integrates with IoT sensor platforms via API and supports any sensor that transmits data over a standard protocol. Commonly integrated sensor types include NDIR CO2 transmitters, optical PM2.5 sensors, MOX and electrochemical VOC sensors, capacitive relative humidity sensors, and thermocouple or NTC temperature probes. Sensor assets are registered individually in OxMaint with calibration due dates tracked as scheduled PM tasks. When a sensor goes offline or exceeds its calibration interval, OxMaint generates a maintenance work order — ensuring monitoring coverage gaps are caught before they affect compliance documentation continuity.
How does OxMaint help building owners use IEQ data for WELL or LEED certification audits?
OxMaint's compliance report export generates a complete IEQ documentation package: continuous sensor reading history by zone and parameter, threshold breach events with timestamps, work order response and closure records linked to each breach, filter replacement and equipment service logs, and technician certification records. WELL v2 and LEED v4.1 auditors require evidence that monitoring was continuous, that threshold exceedances were documented, and that corrective actions were completed and recorded. OxMaint's audit trail covers all three requirements in a single export, date-filterable to the certification period.
Start free and begin building your certification evidence.
