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Building Automation Systems: Everything you need to know

Building Automation Systems

Last Updated on April 18, 2023 by Admin

Automation is the process of enabling a control system with electric drives, electronics, sensors, and programmed logic controllers to perform tasks that were previously done manually automatically. Building automation systems do just that for your own or manage building space.


If you own a business or live in an apartment building, you can safely assume that this article has something helpful to say about your specific situation!

What is a Building Automation System?

Building Automation Systems (BAS) or Bios for short, also known as Building Management Systems (BMS) or Energy Management Control Systems (EMCS), are smart devices that pilot lighting, fire protection systems, HVAC ventilation, and general building automation.


Imagine coming home to an automated house. Your appliances are turned on, your furniture is sitting exactly where you left it, your lights are on, and the TV shows you a picture-perfect landscape of your front yard that wouldn’t be out of place in Parks and Rec. One of the primary purposes of building automation is to monitor equipment, systems, and operations and conduct operational activities to ensure their continuous use.

Building Automation Systems Market Trends

As per the report, the Building Automation Systems Market was valued at USD 60.31 billion in 2020 and is expected to reach USD 112.93 billion by 2026 and grow at a CAGR of 11.02% over the forecast period (2021-2026).

The global BAS market has been segmented based on product, building, applications, and geographical regions. Based on various product types, the market has been categorized into lighting control systems, HVAC control systems, security & access control systems, etc.

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Major Market Players

  • Honeywell Automation India Limited
  • Siemens Limited
  • Schneider Electric India Pvt Ltd
  • Johnson Controls India
  • ABB India Ltd
  • Mitsubishi Electric Corporation
  • Beckhoff Automation Pvt Ltd
  • Carel ACR Systems India Pvt Ltd
  • Carrier Airconditioning & Refrigeration Ltd
  • Crestron Electronics India Pvt Ltd
  • L&T Electrical and Automation Ltd
  • Delta Controls
  • Robert Bosch GmbH

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How does building automation work?

Building automation systems are designed to make it possible for the building’s systems to operate automatically and without human intervention. They are typically used in installations where the occupants are either away or interacting with the machines via digital interface or voice control. A building automation system can manage everything from temperature and lighting to HVAC, HVAC controls, and other safety-related functions when a person is absent.

Building automation is a system where computers and transmitters are used to control the functions of a building, like controlling lighting in your office, turning off those lights when you leave, heating or cooling your room automatically. Systems like this have become popular because they provide the convenience of knowing that an office’s power usage will be managed while workers focus on their jobs.

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Building automation systems are designed to make life easier for building occupants. They may include elevators, lighting, heating, ventilation, and air conditioning, but they can also have fire protection, security, access control, etc. These systems monitor the condition of facilities so that repairs can be made quickly.

Building automation systems work by connecting all the building’s electrical, heating, and geographic aspects. This is then controlled from one central location using an automated system that can rely on a few sensors and what it has learned from its environment. The automation system may also include other features such as booking people who need to enter or exit the building or managing a reception desk for visitors.

Building automation is a system that controls energy, climate, and security. Computers control the lighting, heating and cooling systems, security cameras, and more in this system. The most significant part of building automation is the HVAC system, Heating, Ventilation Air Conditioning. This is what coordinates how hot or cold your office should be based on your preferences.

Benefits of building automation systems

Building automation systems are used to manage and automate many building functions. They do this by monitoring, regulating, controlling, and automating the operations of building systems. In addition to managing the facility’s energy consumption, they can also prevent accidents and reduce risk by detecting and responding to abnormal behavior in machines.


Building automation systems have many benefits. They help with energy efficiency, as well as environmental efficiency and safety. Most automation systems also include a remote monitoring system that sends alerts when there are problems, giving the building owner peace of mind.

They will decrease your chances of incurring a significant accident by helping you plan, reduce the likelihood of human error, and reduce labor costs associated with everyday tasks.

Building automation systems can improve and save on your operations by increasing efficiency, cutting costs, and increasing safety. The Internet of Things also makes these systems more popular by enabling them to be controlled remotely.

Types of Building Automation Systems

There are three types of building automation systems:

Advanced Building Management Systems (ABMS)

ABMS is the newest building management system in the market. ABMS is often more expensive, but it has advanced features that make operating easier. They allow all aspects of the building to be managed remotely, giving the user the freedom of being anywhere they want while still allowing them to control and monitor their facilities. ABMS can also reduce operating costs, increase security, and maximize performance.

Local Automation Systems (LAS)

LAS is considered the most cost-effective option, which is why they’re usually used in projects that require quick response times and high precision. Local Automation Systems (LAS) enable controls that can be handled inside the automation section. They can monitor many aspects of the business like energy consumption, HVAC systems, and CO2. LAS operates with energy efficiency and air quality by monitoring how much power you require and how it’s used to deliver fresh, clean air and keep people healthy. In other words, LAS can improve your neighboring buildings drastically from both a cost-saving perspective and one that keeps people healthy at the same time.


A Supervisory Control And Data Acquisition System (SCADA) controls, monitors, and automates a building. Using data-link technology, the SCADA provides access to power, lighting, security, and other systems in a building. SCADA systems are typically the most reliable because their sensors and controllers can be monitored 24/7 without fail. High-end systems can supply heating and cooling, with the ability to turn certain switches off or on based on the need.

Pros and cons of building automation systems


  • Building automation systems save energy, increase occupant quality of life, reduce compliance issues, improve safety and security, etc.
  • They make your facility more efficient and help you achieve many cost-saving goals, such as lowering utility costs.
  • They also reduce your workload because they can automatically schedule parking, heating, or cooling settings most appropriate for occupants.
  • Building automation can lower overhead expenses by up to 50% while improving efficiencies by 70%.
  • They eliminate the need to monitor and turn off lights, raise and lower windows by hand, or control elevators wirelessly with limited remote monitoring capabilities.
  • They improve security by eliminating human oversight in all key areas (lights, window readings, elevators).
  • They fuel up shorter nighttime ranges of service, giving utilities a more significant number of hours during the day.


  • Building automation systems have many benefits, but there are some drawbacks considering the current cost of this technology.
  • IT systems break down regularly, leading to downtimes and security breaches.
  • The reduced invested costs can also be viewed as costly because they need upgrades and repairs more often than other technologies.
  • Many people turn to the DIY route for their HVAC, sprinkler systems, and other equipment.
  • Risk of hacking
  • False alarms or alerts are caused by minor problems and the cost of system maintenance.

Alternative to Building Automation Systems

Building Automation Systems are expensive and complex, whereas ordinary computers can successfully build, control, and monitor HVAC & lighting for a fraction of the cost. They consist mainly of RTUs or remote terminal units that monitor field sensors or other subsystems from a central office or roof. With the growing concern of safety and automation with IoT, ordinary computers are running the show to meet today’s safety standards.

Software like LIS (Built to Order) serves as an alternative to purchasing new Building Automation Systems. It makes big projects easier for companies with low budgets and long turn-around times.


Final Thoughts

Converting intelligent building automation from manual to fully automated can be daunting, but it’s well worth the investment with the right tools and guidance. Automation offers clients many new benefits like ease of control, disruptions in service interruptions, fewer requirements for staff, and a smoother delivery process.

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