The document describes an experimental study of the performance and flow characteristics of three different floor swirl diffuser models under varying operating conditions. An acrylic room with dimensions of 4ft x 4ft x 5ft was used, containing one of the diffuser models and a 1500W heater as a heat source. Temperature readings were taken at six locations within the room, with and without the heat load, and for the three diffuser models. The 80-degree swirl diffuser model showed the least variation in temperature with height. In general, temperature variation reduced with increasing distance from the heat source. The swirl action from the diffusers helped achieve more uniform temperature distribution and equalization within the room.