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Optimizing Air Filter Performance in HVAC Systems with Ellenex’s NB-IoT Technology

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The Heating, Ventilation, and Air Conditioning (HVAC) industry has long been central to modern industrial operations, commercial properties, and public infrastructure. As buildings and industrial facilities strive to meet sustainability goals and reduce operational costs, efficient management of HVAC systems has emerged as a priority. Studies from industry leaders, including the U.S. Department of Energy, have shown that inefficient HVAC systems can contribute to 30-40% of total energy consumption in large buildings. One often overlooked factor in this energy wastage is air filter performance.

Air filters in HVAC systems play a critical role by trapping airborne contaminants, ensuring good air quality while maintaining optimal system performance. However, when these filters become clogged or inefficient, HVAC systems are forced to work harder, driving up energy consumption, increasing maintenance demands, and often leading to equipment failure. Monitoring the performance of these air filters in real time is essential for energy efficiency, predictive maintenance, and cost savings.


Studies from industry leaders, including the U.S. Department of Energy, have shown that inefficient HVAC systems can contribute to 30-40% of total energy consumption

Optimizing Air Filter Performance in HVAC Systems with Ellenex’s NB-IoT Technology
NB-IoT communication Technology is one of the most efficient options to achieve cost effective Optimizition of air handling units and Air Filter Performance in HVAC Systems

For one of our clients, a global leader in the semiconductor industry, the challenge was clear. Their U.S. operations include several large facilities that rely on HVAC systems to maintain strict environmental conditions. However, they were experiencing challenges to monitor and optimize the energy consumption and frequent maintenance issues related to their air filtration systems. Despite regular manual checks, client found it difficult to pinpoint when air filters were underperforming or clogged, leading to increased operational costs and system downtime.

Given the scale of their operations, manually checking the air filters was inefficient and prone to human error. What they needed was a solution that could provide near real-time data, enabling their facilities team to make informed decisions without constant manual intervention. Predictive maintenance and energy optimization were critical goals.



Ellenex’s Solution: NB-IoT-Powered Air Filter Performance Monitoring

Ellenex stepped in with a solution specifically designed to meet the demands of large-scale industrial facilities. The PDT2-N pressure sensor was deployed as part of an NB-IoT-enabled air filter performance monitoring system. This solution provided the client with accurate, real-time data on the condition of their air filters, tracking pressure differentials to identify when filters were becoming clogged or underperforming.

NB-IoT (Narrowband IoT) technology was key to the solution's success. Unlike traditional monitoring systems, which often require extensive cabling or have limited range, NB-IoT allows for long-range communication with minimal power consumption. This made it ideal for large industrial environments where HVAC units are often located in hard-to-reach areas. The combination of the PDT2-N sensor and NB-IoT ensured that our customer could monitor air filter performance continuously, even in the most remote sections of their facilities.


Why NB-IoT?

NB-IoT technology is specifically designed for applications like this, where low power and wide area coverage are needed. Its long battery life and ability to penetrate walls and concrete made it a perfect fit for HVAC systems in industrial environments. It offered our partner a cost-effective solution without the need for frequent battery changes or signal boosters, allowing them to collect real-time data from every air filter across multiple buildings.


Overcoming Operational Challenges with Predictive Maintenance

One of the biggest hurdles client faced before adopting Ellenex’s solution was the reactive nature of their maintenance schedules. Without real-time insights, they were forced to rely on either scheduled maintenance—often changing filters prematurely—or on maintenance triggered by system breakdowns. Both approaches were costly and inefficient.

With the PDT2-N pressure sensor in place, our client shifted to a predictive maintenance model. By continuously monitoring air filter performance, they could replace filters only when necessary, based on actual data rather than guesswork. This not only reduced the frequency of filter changes but also prevented system failures caused by clogged filters.

Additionally, the real-time alerts provided by the Ellenex platform allowed them to respond proactively to any issues. If a filter began to show signs of reduced performance, the system would notify the maintenance team, allowing them to intervene before energy usage spiked or system damage occurred. This data-driven approach significantly reduced downtime, improved the reliability of their HVAC systems, and lowered energy consumption.


Energy Savings and Reduced Environmental Impact

By integrating Ellenex’s air filter performance monitoring solution, our client achieved significant results. They saw a 15% reduction in energy consumption directly attributable to improved HVAC performance. The data collected also allowed them to optimize their maintenance schedules, reducing labor costs and extending the life of their air filters.

Moreover, the solution contributed to their broader sustainability initiatives. HVAC systems are notorious for their high energy usage, and inefficient systems contribute to increased carbon footprints. By optimizing the performance of their air filters, they reduced unnecessary energy waste, aligning with their environmental targets.

This use case demonstrates how Ellenex’s solution can help not only in cost reduction but also in achieving sustainability goals, making it an ideal choice for other companies looking to optimize their HVAC operations.


The Future of HVAC Monitoring

Ellenex’s air filter performance monitoring solution, powered by NB-IoT technology, offers a scalable, reliable, and cost-effective way to optimize HVAC systems in large industrial facilities. For companies like Intel, the ability to gather real-time data on air filter performance is a game-changer, reducing energy consumption, extending equipment life, and lowering operational costs. As industries continue to focus on energy efficiency and sustainability, predictive maintenance solutions like these will play a critical role in the future of facility management.

Whether you're managing HVAC systems in a high-tech manufacturing facility or a commercial property, Ellenex’s solutions can help you gain better control over your assets and streamline your operations.


PDT2 is of the most accurate and reliable filter performance monitoring differential pressure sensor designed for the harsh environments
PDT2 is of the most accurate and reliable filter performance monitoring differential pressure sensor designed for the harsh environments


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  • Air Compressor Operation Monitoring

  • Asset Cathodic Protection Monitoring

  • Asset Temperature Monitoring

  • Boilers Pressure and Temperature Monitoring

  • Building Structural Health Monitoring

  • Chemical Tanks Level Monitoring

  • Data Centre and Clean Room Pressure Monitoring

  • Diesel Delivery Management

  • Differential Pressure Monitoring

  • Dump Truck Overload and Operation Monitoring

  • Dust Collection System Monitoring

  • Farm Fish Operation Monitoring

  • Flood Monitoring

  • Frozen Food Delivery Management

  • Grain Silo Level Monitoring

  • HVAC Air Filter Performance Monitoring

  • HVAC Airflow Monitoring

  • Hydraulic Systems Overload Monitoring

  • Industrial Gas Cylinders Level Monitoring

  • Industrial Water Meters Digitalisation

  • Land Movement Monitoring

  • Liquid Storage Tank Level Monitoring

  • Manhole Blockage Monitoring

  • Milk Tank Level Monitoring

  • Negative Pressure Monitoring

  • Operational System Digitalisation

  • Pipe Temperature and Pressure Monitoring

  • Pump Pressure Monitoring

  • Rain Level Monitoring

  • Remote Diesel Tank Level Monitoring

  • Soil Moisture Monitoring

  • Trucks Overload Monitoring

  • Underground Water Pipeline Pressure Monitoring

  • Waste Liquid Delivery Management

  • Wastewater Pipe Pressure Monitoring

  • Water Filter Performance Monitoring

  • Water Quality Monitoring

  • Water Supply Monitoring

  • Water Tank Level Monitoring

  • Water Wells Level Monitoring

Key pre-configured Industrial IoT solutions

Main Industrial IoT Sensors: 

  • PTS2: Industrial Pressure (0.2bar to 1,000bar)

  • PTC2: Corrosive Resistant Pressure

  • PTD2: Pressure Sensor with Built-in Temperature Sensor

  • PTDH2: High Temperature Pressure and Temperature Sensor

  • PTG2: Pressure with Built-in GPS

  • PTS3: IP68 Pressure Sensor

  • PTF2: Flush Type Pressure Sensor

  • PTF2: Thich film Flush type Pressure

  • PTE2: Earth Pressure Sensor

  • PDS2: Industrial Differential Pressure Sensor

  • PDG2: DP with Built-in GPS

  • PDT2: Ultra Low Range Air Pressure and Temperature

  • PLS2: Submersible Level (1m to 200m range)

  • PLC2: Corrosive Resistant Level (Titanium)

  • PLD2: Level Sensor with Built-in Temperature

  • PLG2: Level Sensor with Built-in GPS

  • PLS3: Submersible Level Sensor with IP68 Housing

  • PLM2: Well Level Sensor (15.8mm Sensor Head, 2in Housing)

  • PLMD2: Well Level and Temperature Sensor

  • TTS2: Industrial Temperature Sensor

  • TTG2: Temperature Sensor with Built-in GPS

  • TTS3: Temperature Sensor with IP68 housing

  • TTS2: Pipe Temperature Sensor

  • DUS3: IP68 Ultrasonic Level Sensor

  • DRC3: IP68 Corrosive Radar Sensor (8m and 30m range)

  • FMS2: Industrial Water Meter Interface

  • CSD2: Conductivity Salinity and Temperature sensor

  • CTR2: Turbidity and Temperature Sensor

  • CPH2: pH, ORP and Temperature Sensor

  • CDO2: Dissolved Oxygen and Temperature Sensor

  • MSS2: Soil Moisture Sensor

  • MAS2: Outdoor Humidity Sensor

  • MRS2: Rain Sensor (Tipping bucket)

  • ECP2: Cathodic Protection Sensor

  • RS1-4/20: Single channel 4-20mA Interface

  • RS1-P: Single channel Pulse Interface

  • RS1-SDI: Single channel SDI-12 Interface

  • RS1-M: Single channel Modbus Interface

  • RS1-Pt: Single channel Pt100 Interface

  • RM1: Multi-channel Interface

  • RM4-4/20: Multi-channel Interface (4 x 4-20mA Sensor)

  • RM4-Pt: Multi-channel Interface (4 x Pt Sensor)

  • RM4-M: Multi-channel Interface (4 x Modbus)

  • RM4-mV: Multi-channel Interface (4 x mV Sensors)

  • RM4-Pulse: Multi-channel Interface (4 x Pulse Counter)

  • RM4-0/10: Multi-channel Interface (4 x 0-10V Sensor)

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