Page 8 of Ventilation Fans by Broan-NuTone

broan ventilation fans ­ questions facts everything you need to know about home ventilation what is a sone and how is it measured a sone is a measurement of sound in terms of comfortable hearing level for an average listener the lower the sone value the more comfortable the listening environment sones are not decibels or volume but rather how sound is sensed one sone is the equivalent of a quiet refrigerator what does cfm mean cfm is the acronym for cubic feet per minute the measure of air volume moved by the fan blower choose a fan with a cfm rating appropriate for your room size to ensure adequate ventilation what is continuous ventilation continuous ventilation provides today s airtight homes with a relatively constant and controlled lower level of ventilation broan s extremely quiet and efficient ultra silent series is ideally suited for these applications tm will a bath fan or wall-mount utility fan serve as a range hood no range hoods are specifically designed to handle grease and high temperature environments broan bath fans supplement odor and moisture removal in the kitchen but are not intended for use as a range hood what does static pressure mean static pressure is the measurement of airflow resistance as it is pushed through ductwork which reduces the effectiveness of the fan learn more on the home ventilating institute web site www.hvi.org some wall controls also give you the option of humidity sensing or timer control just set it and forget it what are the timer features delay-off timers automatically shut your fan off after a specified time interval it s a nice feature in high traffic bathrooms where you may wish to let the fan run to clear moisture adequately a timer counts down the minutes of fan operation selected by the user where should the exhaust fan be located exhaust fans should be located in or near the shower or tub and in an enclosed water closet keep exhaust points opposite the supply air source to ensure that the fresh air is drawn through the room bathroom doors should not be sealed too tightly at the bottom in order to allow makeup air to enter the room when the door is closed how do i size a fan properly for my room size and the duct run see the sizing guidelines on page 7 for details on proper sizing this section provides an explanation and examples to help you make the right decision where is the exhaust outlet on the ventilation fan the exhaust outlet is the point where air is discharged through the body of the fan housing into the ductwork during installation orient your fan with the exhaust outlet pointing toward the exit vent on your roof or wall to minimize turns in ductwork that impede airflow air quality broan has long been a leader in indoor air quality solutions our spot ventilation products for bathrooms and kitchens control problems at the source for whole-house filtration can i mount broan fans above my tub and shower most broan fans are rated for use over a shower or bathtub with a gfci ground fault circuit interrupter can my bath fan be surrounded by insulation yes broan bath fans are designed to provide adequate cooling for motors and lighting as well as products with integral heaters will broan fans work in wall-mount applications some broan bath and utility fans may be wall mounted see the product matrix for specific models improper installation may affect fan life safety and your warranty 8 and ventilation broan fresh air systems set the standard how long should a bath fan run after a shower is used the home ventilating institute recommends that a fan should be left on for 20 minutes more to clear humidity adequately and to ensure moisture and condensation in the fan body or ducting is minimized what should i do if i can t wait for moisture to clear but i don t want a fan to run all day long broan has sensing fans that detect the humidity rise caused by a shower and turn on automatically ­ when moisture has cleared it turns off.

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