Finding Hidden Hotspots Using LoRaWAN Temperature & Humidity Sensors
In most offices, comfort problems don’t look like a technical issue at first.
The AC is running, the thermostat shows a normal temperature, and yet the feedback from people is always the same:
- One area feels too warm
- Another corner feels freezing
- Meeting rooms feel “heavy” after a few minutes
- Some zones feel uncomfortable even when the temperature looks perfect
The reason is simple one sensor or one thermostat can’t represent an entire office floor.
Temperature and humidity change zone by zone based on sunlight, airflow, occupancy, and layout. And on top of that, indoor air quality can quietly drop in high-traffic areas, causing discomfort that people can’t always explain.
To solve this, we carried out office heat zone mapping and indoor air quality (AQI) monitoring using a network of LoRaWAN temperature, humidity, and AQI sensors. The goal was to capture real zone-wise conditions across the workspace and turn comfort complaints into clear, measurable data that the facility team can actually act on.
The Real Problem: One Thermostat Can’t Detect Office Heat Zones & Poor Air Quality
In this office, the HVAC system was running and the thermostat looked normal but comfort still wasn’t consistent.
Some teams were saying their area felt warm and tiring by afternoon, while others complained about overcooling. Meeting rooms felt uncomfortable after a few people gathered inside, and certain corners of the workspace felt “off” even when the temperature reading looked fine.
Indoor air quality was also varying across the floor. In high-traffic areas and closed spaces, AQI levels could change without anyone noticing until people started feeling discomfort. Without zone-wise AQI visibility, the facility team had no clear way to identify poor ventilation pockets or track how air quality behaved throughout the day.
Hot & Cold Zones
Certain office areas experienced inconsistent temperatures, affecting employee comfort and productivity.
Employee Discomfort
Uneven airflow led to complaints and reduced workplace satisfaction.
Lack of Real-Time Insights
No system existed to monitor air quality or heat zones continuously, making optimization reactive
Rising Operational Costs
Overcooling or overheating spaces resulted in unnecessary electricity expenses.
The Solution: LoRaWAN Sensors for Temperature, Humidity & AQI Monitoring Across Office Zones
Multiple temperature and humidity sensors were installed across key office areas to capture real heat pockets, over cooled zones, & daily variations caused by sunlight, occupancy, and airflow imbalance. Along with that, AQI sensors were added to identify indoor air quality drops in meeting rooms, closed cabins, and high-traffic sections where ventilation impact is usually invisible.
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Real-Time AQI Monitoring
Sensors track air quality in all office zones, detecting pollutants and ensuring a healthy workspace.
- 02
Heat Zone Detection
Temperature sensors map hot and cold spots, providing actionable insights to optimize central AC airflow.
- 03
Data-Driven AC Optimization
Facility managers use live data to adjust AC settings, reducing overcooling and energy waste.
- 04
Automated Alerts & Insights
System sends instant notifications when air quality or temperature exceeds set thresholds, enabling timely interventions.
- 05
Long-Range LoRaWAN Connectivity
Low-power, long-range sensors communicate seamlessly across multiple floors without additional wiring.
- 06
Centralized Dashboard & Reporting
Integration with a central SCADA or facility management dashboard provides visualization, historical trends, and energy optimization recommendations
Architecture Diagram of LoRaWAN-Based Smart Office AQI Monitoring
Deployment in Action: Installing LoRaWAN Sensors Across Real Work Areas
For this project, deployment was planned with one clear focus:
"Measure the office the way people actually experience it."
Instead of placing sensors near the HVAC panel or relying on a single thermostat point, we deployed LoRaWAN temperature, humidity, and AQI sensors across multiple zones workstations, meeting rooms, cabins, and high-traffic areas. This helped capture real variations caused by sunlight, occupancy load, and airflow differences.
MacSync LoRaWAN AQI Node
Installed across work areas and meeting rooms to track CO₂, PM2.5, and VOC levels, ensuring a healthy workspace.
Industrial LoRaWAN Gateway
Provided long-range data transmission across the entire warehouse complex, ensuring seamless cloud connectivity and backup storage..
Temperature and Humidity Sensors
Strategically placed to map thermal zones, identify hot/cold spots, and guide HVAC optimization.
MacSet Controllers
Used to collect sensor data, manage Andon lights, and communicate over LoRaWAN for visual status indicators.
Challenges: From Data Gaps to Reliable Indoor Intelligence
Signal Interference in Office Layouts
LoRaWAN signals faced interference from glass partitions, metallic ducts, and dense office structures we optimized gateway placement and antenna gain to maintain uninterrupted data flow.
Sensor Accuracy in Dynamic Environments
Synchronizing the MacSet Andon lights with sensor thresholds required careful configuration to avoid false alerts and ensure timely staff response.
Integration with Facility Systems
Bringing LoRa-based sensors into an existing building automation ecosystem required custom mapping and API configurations for seamless dashboard integration.
Employee Awareness and Data Interpretation
We trained facility teams to interpret heat map analytics and AQI trends effectively — turning data into actionable energy savings.
Testing & Validation: Ensuring Accuracy Before Action
Multi-Point Calibration
Each AQI and temperature sensor was calibrated using standard instruments to ensure precise detection across different office zones.
Real-Time Data Verification
Live readings were cross-checked with manual instruments over a week-long observation period to confirm sensor reliability and response time.
Network Performance Validation
LoRaWAN signal strength and packet delivery rates were tested at multiple floor levels to guarantee stable indoor connectivity.
Dashboard & Alert Testing
End-to-end verification confirmed seamless synchronization between sensors, LoRaWAN gateway, and the facility’s SCADA dashboard.
Impact: Turning Data into Comfort and Cost Savings
Optimized Energy Consumption
The real-time AQI and temperature heat maps helped facility managers fine-tune air conditioning zones — reducing power usage by up to 18% without affecting comfort
Enhanced Workplace Air Quality
Continuous AQI monitoring ensured healthy air standards across departments, improving employee well-being and productivity.
Data-Driven Decision Making
Cleaning schedules are now optimized based on live air quality data, reducing resource wastage.
Sustainable Office Operation
LoRaWAN-enabled devices operate long-term with minimal upkeep, allowing easy expansion to other warehouse zones.
Conclusion: Smart IoT Monitoring for Energy-Efficient Workspaces
Our clients corporate office transformed its traditional facility into a data-driven, energy-efficient workplace with LoRaWAN-based air quality and temperature monitoring.
By continuously tracking CO₂, PM2.5, humidity, and heat distribution, the system enabled real-time insights for HVAC optimization, resulting in up to 20% reduction in energy consumption and improved indoor air quality.
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