Belimo HVAC Field Devices: Complete Guide to Actuators, Valves, Sensors & Communication Protocols
In this article, we are going to discuss Belimo company history, Control & Monitoring Solutions, Automation Field Devices, Communication protocols, Belimo Mobile Applications.
Introduction:
- In modern buildings, energy efficiency, indoor comfort, and smart automation are critical performance factors. HVAC field devices play a major role in ensuring reliable system operation, accurate environmental monitoring, and optimized energy consumption.
- This article provides a complete overview of Belimo’s journey from a Swiss startup to a global leader in HVAC field devices. It also explains Belimo control and monitoring solutions, automation field devices, communication protocols, and mobile applications used in modern building automation systems.
- Whether you are an HVAC engineer, technician, system integrator, or student, this guide will help you understand real-world HVAC field device technologies used worldwide.
About the Company
Belimo: A Historical Timeline of Innovation and Global Growth
Belimo Automation AG has grown from a small Swiss start-up into a global leader in HVAC and building automation field devices over the past five decades. The company’s history is defined by continuous technological innovation, international expansion, and a strong focus on energy-efficient solutions.
| Year | Notes |
|---|---|
| 1975 | Belimo was founded in Gossau, Switzerland, by a group of entrepreneurs including Walter Burkhalter, Anton Heinrich Hutte, Ludwig Linsi, Walter Linsi, Werner Roner, and Karl Stocker with a focused mission to develop advanced HVAC control devices. |
| 1976 | The company introduced its first motorized damper actuator, a breakthrough product that significantly reduced installation time and set new standards for HVAC airflow control. |
| 1978 | Continued innovation in actuator technology, including early developments in safety and spring-return actuators. |
| 1980 | Belimo expanded its solutions beyond damper actuators and began developing volumetric flow controllers and next-generation control technologies, establishing a broader product portfolio for HVAC applications. |
| 1990 | Belimo expanded internationally, opening its first subsidiary in the United States, laying the foundation for its global market presence. |
| 1992 | The company introduced brushless DC motor technology, which improved energy efficiency and device longevity, establishing a new benchmark for actuator performance. |
| 1995 | Belimo was listed on the Swiss Stock Exchange (SIX Swiss Exchange), enabling further global growth and investment in technology. |
| 1998 | Belimo entered the HVAC water application market, launching a full line of globe valves and ball valves, extending its expertise into hydronics and water system control. |
| 1999 | The company introduced the Characterized Control Valve (CCV), combining ball valve robustness with globe valve control precision a significant innovation in hydronic flow control. |
| 2000 | Belimo continued to expand its product lines, introducing advanced valves and actuator technologies while increasing its global footprint with subsidiaries and production sites in Europe, Asia, and the Americas. |
| 2003 | Belimo introduced Multi-Function Technology (MFT), adding programmable control features and enhanced communication capabilities to its actuators. |
| 2006 | The company reached a major production milestone of 30 million actuators manufactured since its founding. |
| 2010 | Belimo expanded into intelligent and energy-efficient control solutions, including Electronic Pressure-Independent Valves (EPIV) that maintained stable flow regardless of system pressure variations. |
| 2012 | The original Belimo Energy Valve was introduced, integrating flow control, energy metering, and delta-T management in a single device a milestone in optimizing hydronic system performance. |
| 2015 | Belimo celebrated its 40th anniversary, reinforcing its commitments to innovation and sustainability. |
| 2018–2020 | The company introduced IoT-enabled actuators and devices with BACnet, Modbus, and cloud connectivity, enabling advanced data monitoring and smart building integrations. |
| 2020 | Belimo celebrated producing its 100 millionth actuator, highlighting its extensive global adoption and industry leadership. |
| 2021–2023 | Belimo continued to expand its portfolio, including new room sensors, operating units, and enhanced Energy Valve versions with integrated thermal energy metering and cloud capabilities. |
| 2022 | The Belimo Climate Foundation was established to promote CO₂ reduction in buildings and advance sustainable HVAC practices. |
| 2024–2025 | Belimo is actively evolving its digital product platform, introducing new actuator technologies and advanced valves with the M600 microchip for enhanced control performance. |
Strategic Leadership and Vision
Today, Belimo employs over 2,800 people worldwide, operates in more than 80 countries, and remains a global leader in HVAC field devices including actuators, control valves, sensors, and meters for energy efficient building automation. The company continues to innovate with IoT enabled and digitally connected solutions, addressing the needs of smart and sustainable buildings.
Comprehensive Control & Monitoring Solutions
Belimo system field devices are engineered to deliver precise control and real-time monitoring of critical HVAC and building performance parameters.
Relative Humidity
- Humidity represents the amount of moisture present in the air and plays a vital role in human comfort and health. An optimal indoor humidity range of 40–60% relative humidity (RH) helps prevent dryness of the skin, eyes, and respiratory tract. Conversely, excessive humidity can promote mold growth, material degradation, and indoor air quality issues.
Carbon Dioxide
- Indoor CO₂ concentration is a strong indicator of occupancy levels and ventilation effectiveness. When CO₂ levels exceed 1,000 ppm, occupants may experience reduced concentration, decreased productivity, and potential health discomfort. Continuous CO₂ monitoring supports demand-controlled ventilation and improved indoor air quality.
Temperature
- Temperature directly influences thermal comfort, productivity, and well-being. While ideal temperature preferences may vary among individuals, thermal comfort is also affected by factors such as humidity, air velocity, occupancy, and activity level, making integrated environmental control essential.
Air Velocity
- Air velocity significantly impacts perceived comfort by influencing heat transfer between occupants and the surrounding air. Proper airflow improves thermal comfort, while insufficient air movement can lead to stagnant conditions and the accumulation of airborne contaminants such as VOCs and particulate matter.
Volatile Organic Compounds (VOCs)
- VOCs are carbon-based compounds that easily evaporate at room temperature. Common indoor sources include cleaning agents, paints, adhesives, printers, and furnishing materials.
- Elevated VOC levels can cause discomfort, irritation, and long-term health risks, making continuous IAQ monitoring critical.
Particulate Matter (PM)
- Particulate matter consists of microscopic solid or liquid particles suspended in the air, originating from sources such as dust, pollen, mold spores, and combustion processes. Fine particles can penetrate deep into the lungs, potentially causing allergic reactions, respiratory irritation, and infections.
Condensation
- Air always contains some amount of water vapor. When warm, moist air comes into contact with a colder surface or when the air temperature drops to its dew point, the air can no longer hold all the moisture. As a result, the excess water vapor turns into liquid droplets this process is called condensation.
Differential Pressure
- Differential pressure measurement ensures proper airflow direction and containment within buildings. It is critical in applications such as clean rooms, isolation rooms, stairwells, and data centers, helping prevent cross-contamination and maintain safety standards.
Volumetric Airflow
- Volumetric airflow indicates the quantity of air delivered or exhausted within a space. Accurate airflow measurement supports balanced ventilation, energy efficiency, and indoor air quality compliance in HVAC systems.
Energy Consumption
- Energy consumption monitoring provides insight into how efficiently HVAC and building systems operate. Tracking energy usage enables optimization, cost reduction, and sustainability improvements, while supporting energy management and regulatory compliance.
HVAC & Building Automation Field Devices
Belimo is a leading manufacturer of HVAC and building automation system field devices, offering a comprehensive portfolio designed to enhance system efficiency, safety, and performance.
Belimo’s product range covers a wide spectrum of actuation, flow control, and sensing solutions, supporting reliable control and monitoring across modern building applications.
Actuators
Belimo actuators are engineered for precise and dependable control of air and water systems, including:
Fire and smoke actuators
- Belimo fire and smoke actuators provide reliable, fail-safe operation to control dampers during fire events, helping to protect lives and property by ensuring safe smoke management and fire compartmentalization.
Damper actuators
- Damper actuators are used to open, close, or modulate air dampers to control airflow in HVAC ventilation and air-handling systems.
Control valve actuators
- Control valve actuators are used to drive control valves, enabling precise modulation of fluid flow to maintain accurate temperature and pressure control in HVAC systems.
Butterfly valve actuators
- Butterfly valve actuators are used to operate butterfly valves, providing reliable on/off or modulating control of fluid flow in HVAC and industrial piping systems.
Globe valve actuators
- Globe valve actuators are used to operate globe valves, providing precise modulating control of fluid flow in HVAC heating and cooling applications.
Energy valve actuators
- Energy valve actuators are used to regulate and monitor water flow and energy consumption in HVAC systems, ensuring optimal performance and improved energy efficiency.
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Valves
Belimo provides a broad range of high-quality valves to ensure accurate flow regulation and energy-efficient operation:
Zone valves:
- A zone valve is a control valve used in HVAC water-based systems (like chilled water or hot water systems) to control water flow to a specific zone or area of a building. Common Types of Zone Valves (2-Way Zone Valve & 3-Way Zone Valve).
Ball valves:
- A ball valve is a type of valve used to start or stop the flow of liquid or gas using a rotating ball inside the valve body.
Butterfly valves:
- A butterfly valve is a valve used to control or stop the flow of liquid or air using a rotating metal disc inside the pipe.
Globe valves:
- A globe valve is a valve used to control (regulate) the flow of liquid or gas, not just fully ON or OFF.
Control valves:
- A control valve is a valve used to automatically control the flow, pressure, or temperature of liquid, gas, or steam in a system.
Sensors
Belimo sensors deliver accurate measurement and monitoring of critical environmental and system parameters, including:
Duct-mounted sensors:
- Duct-mounted sensors are sensors installed inside or on the air duct to measure air conditions in HVAC systems.
Pipe-mounted sensors:
- Pipe-mounted sensors are sensors installed directly on water or fluid pipes to measure conditions inside the pipe.
Outdoor sensors:
- Outdoor sensors are sensors installed outside a building to measure environmental conditions and help HVAC or automation systems adjust operation automatically.
Room sensors
- Room sensors are sensors installed inside a room or indoor space to measure environmental conditions and help control HVAC systems for comfort.
Gas monitoring sensors:
- Gas monitoring sensors are sensors used to detect and measure harmful or important gases in the air to keep people and equipment safe.
Indoor air quality (IAQ) sensors:
- Indoor Air Quality (IAQ) sensors are sensors used to measure the quality of air inside a building to ensure it is safe and comfortable for people.
🎥 Watch the Complete Video Playlist
Don’t miss the full step-by-step explanation. Click below to access the complete professional video series.
▶ Watch Full Playlist on YouTube
Communication protocols & Control Types
Belimo manufactures field devices that support a wide range of communication protocols and control types to ensure seamless integration with modern HVAC and building automation systems.
 |
| Belimo Communication protocols |
Communication protocols:
MP-Bus
- MP-Bus is a simple and reliable communication system designed specifically for HVAC actuators and sensors. It works as a single-controller (client) system that can connect up to 8 devices such as damper actuators, control valves, and airflow controllers. MP-Bus uses only three wires, is resistant to electrical interference, and is ideal for compact and efficient installations.
BACnet MS/TP
- BACnet MS/TP is a widely used communication protocol in building automation systems. It is based on RS-485 (EIA-485) and is an open, license-free standard. Devices that follow BACnet device profiles and interoperability standards ensure smooth and reliable communication between products from different manufacturers.
BACnet IP
- BACnet IP is the industry-standard protocol that allows building automation devices to communicate over IP-based (Ethernet) networks. It enables fast data exchange and easy integration with modern IT infrastructure.
Modbus
- Modbus is one of the most commonly used communication protocols worldwide. Known for its simple structure and high reliability, it is widely supported by many manufacturers and used across HVAC, industrial, and energy applications.
KNX
- KNX is a globally recognized building automation standard used to control multiple systems such as HVAC, lighting, blinds, and security. KNX-certified actuators connect directly to the KNX network using the integrated TP (Twisted Pair) interface in S-Mode, ensuring reliable and standardized communication.
IoT Actuators (Ethernet-Based)
- IoT-enabled actuators with Ethernet interfaces allow data exchange through the Belimo Cloud. Depending on the application, these actuators can be controlled via analog signals, BACnet IP, or Modbus TCP/IP. Belimo follows an open and secure integration approach, giving customers full ownership and control of their device data through a Client-API for analysis, usage, or deletion.
Control Types
Control types define how the actuator receives signals and moves the valve or damper.
Open/close:
- Open/Close control means the actuator works only in two positions, fully open or fully closed, and is commonly used for isolation or safety applications.
3-point:
- 3-point control means the actuator can open, stop, or close based on two control signals, allowing gradual movement and is typically used in HVAC dampers and mixing valves.
Modulating:
- Modulating control means the actuator can move to any position between 0% and 100% using analog signals such as 0–10V or 4–20mA, providing precise control and is widely used in chilled water valves, pressure independent valves, and accurate airflow control applications.
Belimo Mobile Applications (apk)
Belimo has developed and launched multiple mobile applications that allow users to support the selection, commissioning, operation, and troubleshooting of HVAC (Heating, Ventilation, and Air Conditioning) field devices. These apps enable efficient on-site work and system optimization using smartphones and tablets.
 |
| Belimo Mobile Applications (apk) |
Belimo RetroFIT+ App
- The Belimo RetroFIT+ App helps users quickly identify the most suitable Belimo replacement actuator for existing or failed actuators. Using innovative technology, the app simplifies retrofit projects and ensures compatibility with older installations.
Belimo Assistant 2 App
- Belimo Assistant 2 enables both wired and wireless configuration, on-site operation, and troubleshooting of Belimo damper actuators, control valves, sensors, and meters.
- The app provides technicians with an efficient tool for commissioning and diagnostics using mobile devices.
Belimo Zone Ease VAV App
- The Belimo Zone Ease VAV App allows users to navigate through a building layout and transfer correct configuration data to the Belimo Zone Ease VAV system via NFC.
- The app provides a clear overview of the commissioning progress and supports data transfer to the Belimo Zone Ease VAV web application, enabling centralized monitoring of commissioning activities.
Belimo Display App
- The Belimo Display App offers an intuitive interface to access Belimo room sensors and room operating units. It allows end users to view room values and adjust setpoints easily, improving comfort and usability.
Belimo BEhive App
- The Belimo BEhive App enables management of the Belimo BEhive living comfort system. It allows users to control indoor climate by regulating room temperature and ventilation levels.
- The app displays the current living room temperature and enables relative temperature adjustment for other living spaces, ensuring personalized comfort throughout the home.
Conclusion
- Belimo continues to lead the HVAC and building automation industry through innovation, energy-efficient technologies, and smart digital integration. From actuators and control valves to advanced sensors and IoT-enabled devices, Belimo solutions support modern building requirements for performance, safety, and sustainability.
- As smart buildings continue to evolve, advanced field devices will play an even more important role in energy optimization, indoor air quality improvement, and predictive maintenance strategies. Understanding these technologies helps engineers and technicians design more efficient and future-ready building automation systems.
About the Author – Insight Control System
Insight Control System provides technical education and practical guidance in the fields of Building Automation Systems (BAS), HVAC controls, PLC programming, sensors, and industrial automation. The content published on this platform is based on field experience, technical documentation analysis, and real-world system applications.
Our objective is to simplify complex automation concepts for engineers, technicians, students, and industry professionals worldwide.
Every article is carefully structured to deliver accurate technical knowledge, practical insights, and industry-relevant information aligned with modern automation standards.
We continuously update our content to reflect current technologies, control strategies, and best engineering practices.
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