80″ ceiling fans (203 cm) and larger ceiling fans are great choices for large rooms or commercial applications like cafes and restaurants. This style of ceiling fan is known as high volume, low speed (HVLS) ceiling fans. This means that the ceiling fan will move large volumes of air at low velocity, but over an increasing area. These fans can come with DC motors to generate the power required to move the air efficiently. These types of fans are becoming more popular and can be found with 5,6,7 and even 9 blades to generate the best air movement over large areas.