Built to make controlling bathroom humidity effortless, the Delta Electronics VFB25ACH Breez 80 CFM Humidity Sensor Exhaust Fan is quiet, efficient, and rated for continuous use. Its low-noise, ceiling-mount design is unobtrusive, and with its Energy Star-certification, the Breez Humidity Sensor Fan is easy on your energy bill and the environment. This ventilation fan conforms to UL and cUL safety standards. 80 CFM Humidity Sensor Exhaust Fan At a Glance: Ceiling-mount design rated for continuous operation Cycling switch offers full-power and humidity-sensor modes In humidity-sensor mode, automatically switches on when humidity is above 60 percent Noise level of less than 0.3 sones DC brushless motor with soft start for long life Energy Star-certified UL, cUL, and HVI certified Backed by a limited three-year warranty Galvanized steel construction provides durability. View larger. DC brushless motor with built-in soft-start function is designed to increase product life. View larger. Smart Humidity Control Protects Your Home The Delta Electronics VFB25ACH Breez 80 CFM Humidity Sensor Exhaust Fan can be set to operate in either of two modes--humidity sensor or full speed. A pair of blue and amber LED lights indicate which mode is active. In humidity-sensor mode, the unit"s motor automatically adjusts fan speed based on humidity levels--you never have to manually turn the fan on before a shower or remember to turn it off after one. This keeps towels and curtains from staying damp, prevents damaging mold, and keeps your home comfortable. The fan"s default settings include a 60 percent humidity threshold. The fan will start when the humidity level reaches 60 percent. It will remain on as long as the humidity remains above the threshold, and it will turn off automatically after the humidity level comes back down to less than 60 percent. Quiet, Energy Star-Certified Fan for Cost-Effective Ventilation Ideal for bathroom spaces, the ceiling-mount Breez exhaust fan delivers an air flow rate of 80 cfm for improved indoor air quality--which offers the potential of improved comfort and health for your family in the home. In addition, it operates at a noise level of less than 0.3 sones, running nearly silent. This Breez"s smart design is Energy Star-certified, so you can be assured it"s a good choice for keeping your utility bills manageable and running a green household. Its 7.1-watt power-consumption rating translates to an impressive efficiency rating of approximately 11.75 CFM per watt at 0.1-inch of static pressure. DC Motor Technology Ensures Consistent Performance One innovation that allows the Breez to be so efficient is a switching power supply that converts your home"s standard AC 110~220-volt power source to DC power, which allows the fan to utilize an efficient DC motor. This DC brushless motor is engineered to run continuously, and offers a life expectancy of 70,000 hours--about eight years of nonstop ventilation. The Breez"s DC motor includes a built-in soft-start function to increase the lifespan of its bearings, and it"s designed to automatically power off the fan if the impeller ever locks abnormally. In addition, the motor and blower assembly is equipped with a thermal cutoff fuse for added safety. Durable, Easy-to-Install Body with a Clean Look The Breez"s body features galvanized steel construction for durability. It also has a detachable 4-inch duct adapter and a built-in back-draft damper. Also, the face of the fan unit is a sleek, unobtrusive grille that blends in seamlessly with any decor--whether installing the exhaust fan to update an existing bath, or placing it in a newly constructed home. And the grille is constructed with sturdy ABS material. It attaches securely and directly to the housing with torsion springs, and the entire unit is built for easy installation. UL and HVI Certified for Safety and Reliability Built for use with ducts that measure at least 4 inches in diameter, the Breez has been evaluated by the Underwriter Laboratories and conforms to both UL and cUL safety standards. It is also UL and cUL listed for use in a tub or shower enclosure when used with GFCI branch-circuit wiring. And it"s HVI (Home Ventilation Institute) certified. The Delta Electronics VFB25ACH Breez 80 CFM Humidity Sensor Exhaust Fan is backed by a limited three-year warranty. What"s in the Box Delta Electronics VFB25ACH Breez 80 CFM Humidity Sensor Exhaust Fan body, grille, installation hardware, and instructions. VFB25AC Exhaust Fan VFB25AD Exhaust Fan VFB25ACH Humidity Sensor Exhaust Fan VFB25ADH Humidity Sensor Exhaust Fan VFB25AEH Humidity Sensor Exhaust Fan VFB25AX Duel-Speed Exhaust Fan Description Ceiling mount exhast fan is ideal for bathroom spaces, and is Energy Star-certified. Ceiling mount exhast fan is ideal for bathroom spaces, and is Energy Star-certified. Automatically starts when humidity levels reach 60 percent and remains on as long as the humidity remains above the threshold. Automatically starts when humidity levels reach 60 percent and remains on as long as the humidity remains above the threshold. Automatically starts when humidity levels reach 60 percent and remains on as long as the humidity remains above the threshold. Ideal for bathroom spaces, the duel-speed exhaust fan can ramp up the power when needed. Circulation 80 CFM 110 CFM 80 CFM 110 CFM 130 CFM 80/110 CFM Noise Level Less than 0.3 sones Less than 1.1 sones Less than 0.3 sones Less than 1.1 sones Less than 1.3 sones Less than 0.5 sones at low speed