Delivers an instant boost of hot air for added comfort when you need it most;Reduces sound for quiet operation and helps prevent cabinet sweating in hot and humid environments;Inhibits mold and mildew growth and is made from a durable composite material that won't corrode or rust;Humidity control makes a home's environment healthier and more comfortable year-round;The CBA25UH-048 runs smoothly at higher speeds for an elevated level of comfort, with minimum operating sounds and energy waste