Are Overhead Fan Coils a Good Design for Offices

Why UFAD systems are the superior choice 

Overhead fan coil systems have long been a staple in commercial HVAC design, used extensively in office buildings, retail spaces, and other environments where temperature control is essential. However, as building standards evolve to prioritize occupant comfort, energy efficiency, and environmental sustainability, the limitations of these traditional systems have become more apparent.  

That’s because they come with several significant drawbacks that impact air quality, comfort, and operational costs. Underfloor Air Distribution (UFAD) systems present a modern, innovative alternative that addresses these issues by offering numerous benefits for both building occupants and owners alike. 

If you’d like to learn more about why UFAD is a superior alternative to overhead fan coils, contact us online today. We’re here to provide any information we can. 

5 Disadvantages of Overhead Fan Coils 

1. Poor Air Quality: Overhead fan coil systems often recirculate stale air, which can lead to a buildup of indoor air pollutants. This recirculation results in reduced air quality, increased discomfort, and potential health issues for occupants. Over time, the accumulation of dust and allergens within the system can further compromise air quality. Smaller filters and limited air distribution capabilities can result in suboptimal air quality.
2. Uneven Temperature Distribution: A common complaint about overhead systems is the presence of hot and cold spots throughout a building. Because they deliver air from the ceiling, lower areas go untreated. This uneven distribution makes it challenging to maintain consistent temperatures, leaving some areas too warm and others too cold.
3. High Energy Consumption: Overhead systems often require significant energy to function as intended. Their reliance on high-powered fans to push air across large spaces increases energy consumption. Frequent adjustments to maintain comfortable temperatures also contribute to inflated energy costs, impacting a building’s overall operational efficiency. FCUs often lack the energy efficiency of centralized systems, with constant fan operation and localized energy use.
4. Performance Concerns: The mechanical components of overhead coil units, including motors and fans, can generate a substantial amount of noise. As a result, it can disrupt productivity and concentration, especially in office environments where quiet conditions are essential for work. Uneven air distribution, drafts, and hot spots can occur, and dehumidification capabilities may be inadequate in high-moisture spaces.
5. Space and Aesthetic Constraints: Overhead systems are typically integrated into the building’s infrastructure, which makes modifications or expansions costly and disruptive. For businesses or facilities that frequently reconfigure their spaces, this lack of adaptability can be a major drawback. These units occupy valuable plenum space, limiting options for integrating lighting, sprinkler systems, and ductwork. Ceiling design and aesthetics may be compromised by access panels, visible vents, or restricted architectural flexibility. 

5 Advantages of UFAD 

In contrast, UFAD systems offer a groundbreaking approach to HVAC design by addressing the shortcomings of traditional overhead systems. By distributing air through a network of ducts and diffusers located beneath a raised floor, UFAD systems provide enhanced performance and greater flexibility. Some of its other benefits include: 

1. Improved Air Quality: UFAD systems deliver fresh, filtered air directly to occupants. By introducing air at floor level and allowing it to rise naturally, these systems minimize the recirculation of stale air and reduce the concentration of airborne contaminants. This improvement enhances indoor air quality, promoting better health and comfort.
2. Even Temperature Distribution: UFAD systems deliver air at a low velocity from the floor, which allows it to rise and distribute evenly throughout the space. This method eliminates the hot and cold pockets common with overhead systems, ensuring a more consistent and comfortable environment.
3. Energy Efficiency: One of the main advantages of UFAD systems is their energy efficiency. By operating at lower fan speeds and optimizing air distribution, UFAD systems significantly reduce energy consumption. Also, the natural convection effect—where warm air rises and cooler air stays lower—leads to further optimization. This lowers operational costs while reducing a building’s carbon footprint.
   
4. Quiet Operation: Unlike the noisy mechanical components of overhead fan coil units, UFAD systems are quiet. The reduced noise levels create a more peaceful and productive environment, which is particularly beneficial in libraries, office spaces, classrooms, and other noise-sensitive areas. 
5. Flexibility and Adaptability: UFAD systems are designed with adaptability in mind. The raised floor allows for easy reconfiguration, making it simple to accommodate layout changes. This flexibility is ideal for modern workspaces that prioritize agility and customization. 

Applications of UFAD Systems 

UFAD systems are particularly well-suited to commercial buildings, including offices, educational facilities, and government buildings. They are also gaining popularity in green building designs, where energy efficiency and sustainability are top priorities. UFAD systems complement modern architectural trends emphasizing open layouts, sleek minimalism, and customizable spaces. Although overhead fan coils have served their purpose for decades, they struggle to meet the demands of today’s buildings, where comfort, energy efficiency, and adaptability are paramount.  

UFAD systems offer a forward-thinking solution that overcomes the limitations of traditional, outdated HVAC designs. By improving air quality, ensuring even temperature distribution, and enhancing energy efficiency, UFAD systems create environments that are healthier, more comfortable, and more sustainable. For building owners and occupants alike, the shift to UFAD represents an investment in a smarter, more efficient future. 

If you want to get more information about UFAD systems now, then you can fill out our online contact form. We’d love to help you explore innovative airflow solutions for your space.