Spoiler: No, at least not always…

Many assume that if you install a perimeter air conditioner, you need a raised floor. But the truth is more flexible.

What is a perimeter air conditioner?

It is a type of precision cooling system placed along the edges of the room. Its function is to capture the hot air from the environment, cool it, and then return it to the cold aisle. In many cases, this is done beneath the raised floor through ductwork.

Raised Floor: Advantages and Challenges

The raised floor helps distribute cold air efficiently. It also allows cables and pipes to be concealed. However, it is not always feasible. Some installations, for example in older buildings or adapted spaces, cannot accommodate a raised floor.

What alternatives are available?

Today, there are perimeter units that deliver air from the top or front without the need for a raised floor. Overhead ductwork or hybrid solutions can also be used. Brands like Vertiv, Stulz, and Schneider offer adaptable configurations.

Conclusion

The raised floor is still useful, but no longer mandatory. What matters is designing based on the actual conditions of the site.