Underfloor Air Conditioning(UFAC)
Underfloor air conditioning is a system that uses the space beneath a raised floor to distribute conditioned air throughout a building. UFAC is often used in commercial buildings to provide a comfortable and flexible indoor environment.
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How does it work?
An underfloor air conditioning system works by using the space beneath a raised floor as a plenum for distributing conditioned air throughout a building. Here's how it typically works:
- Conditioned air is supplied into the underfloor plenum through a network of ducts and diffusers located beneath the floor.
- The air is then allowed to flow freely through the plenum, rising up through floor vents strategically placed throughout the space.
- As the air rises, it naturally cools or heats the space above the floor, providing a comfortable environment for occupants.
- Return grilles located at higher levels in the room allow the air to be drawn back down into the underfloor plenum, where it is recirculated and conditioned again.
- The system is controlled by a central management system that monitors and adjusts the temperature and airflow to maintain optimal comfort levels throughout the building.
Type of UFAC

CAM-C
The CAM-C delivers conditioned air into the supply plenum and receives return.
CAM-V
The CAM-V delivers conditioned air into the supply plenum and receives return air at high level.
Benefits
Benefits of Underfloor Air Conditioning
- Improved Air Quality: Enhanced ventilation and air distribution can lead to better indoor air quality.
- Energy Efficiency: UFAC systems can be more energy-efficient than traditional systems, reducing operational costs.
- Flexibility: The system allows for easy reconfiguration of spaces without the need for extensive ductwork.
- Aesthetic Appeal: With ducts hidden beneath the floor, UFAC systems can contribute to a cleaner and more modern aesthetic.
Reference
FAQ
Underfloor Air Conditioning (UFAC) is a system that delivers conditioned air through a network of ducts located beneath the floor. This approach has several applications and benefits across various settings. Here are some key applications of Underfloor Air Conditioning:
1. Commercial Buildings
- Office Spaces: UFAC provides a comfortable working environment by allowing for better temperature control and improved air quality. It can also facilitate flexible office layouts.
- Retail Stores: Enhanced comfort for customers and employees, along with the ability to maintain different temperature zones within the store.
2. Data Centers
- UFAC systems can efficiently cool server rooms and data centers, where maintaining a stable temperature is critical for equipment performance and reliability.
3.Educational Institutions
- Classrooms and Lecture Halls: UFAC can improve air distribution and comfort in large spaces, enhancing the learning environment for students.
4.Healthcare Facilities
- Hospitals and Clinics: UFAC systems can help maintain strict temperature and humidity controls, which are essential for patient comfort and the proper functioning of medical equipment.
5.Green Buildings
- UFAC systems can contribute to energy efficiency and sustainability goals, as they often use less energy than traditional HVAC systems and can be integrated with renewable energy sources.
6.Theaters and Auditoriums
- UFAC can provide even temperature distribution and improved air quality, enhancing the audience's experience during performances.
7.Transportation Hubs
- Airports and train stations can benefit from UFAC by maintaining comfortable environments for travelers while allowing for flexible space usage.
8.Historical Buildings:
- UFAC systems are often chosen for historical buildings or buildings with architectural constraints, as they offer a discreet and flexible solution that minimizes the impact on the building's aesthetics.
9.Renovations and Retrofits:
- UFAC systems are a popular choice for renovations and retrofits, as they can be easily installed without the need for extensive ductwork or ceiling modifications. This makes them a cost-effective and efficient option for updating older buildings.
Underfloor air conditioning systems, there are several key pieces of equipment that are typically used:
- Air Handling Units (AHUs): These units are responsible for conditioning the air by cooling or heating it before distributing it throughout the space.
- Fan Coil Units (FCUs): FCUs are used to regulate the temperature of the air in specific zones or areas within the building.
- Grilles and Diffusers: These components help to distribute the conditioned air evenly throughout the space.
- Underfloor Plenum: This is the space beneath the raised floor where the air is distributed and circulated.
- Control System: A control system is essential for monitoring and adjusting the temperature and airflow of the underfloor air conditioning system.
These are some of the essential equipment components used in underfloor air conditioning systems.
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