My exhaust fan is louder than normal?

No. Range hoods are specifically designed to handle grease and high temperature environments. Ventilation provided by NuTone or Panasonic fans are only a supplement for odor and moisture removal in the kitchen.

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On most exhaust fans the model number is located on a sticker on the inside of the housing. You may need to remove the grill in order to see the model number.

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To maximize your exhaust fan's performance, match your duct size to the original size of the fan’s ducting (do not use a reducer), use the shortest amount of ducting possible, keep the ducting as straight as possible, and if flexible ducting is used, keep it as stretched out as possible to limit the resistance of air flow.

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When the exhaust fan ventilates air out of the room, the amount of air ventilated needs to be replaced, this is called make-up air. If there is not enough make up air, the exhaust fan's performance will be diminished. Typically make up air for bathroom exhaust fan's is accomplished by a gap cut at the bottom of the door entering into the bathroom.

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Typicaly a bathroom exhaust fan should be mounted as close to or inside (if rated for tub shower use) to the shower or tub as possible. This will maximize the effectivness of the unit. Units located in a powder room, should be directly over the toilet.

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