Range Hoods

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What is CFM?

CFM is an acronymn for Cubic Feet per Minute. This number is the unit of measurment for how much air is exchanged in one minute of time. The higher the CFM the more "powerful" the exhaust fan is.

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What is a Sone?

A sone is an internationally recognized unit of loudness. The sones translate laboratory decibel readings into numbers that correspond to the way people sense loudness. Double the sone is double the loudness. In everyday terms, one sone is equivalent to the sound of a quiet running refrigerator in a quiet kitchen. The lower the sone, the quieter the exhaust fan is.

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Can I use a speed control with my exhaust fan?

Only units designed for use with a speed control can utilize one.  Generaly speaking, if a unit is not listed as 'variable fan speed control,' the unit will not be empowered for this application.  Refer to your specific models specifications to determine if it can.

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My exhaust fan is louder than normal?

This is probably attributed to one of the following:1. The motor is loose - turn off power to the unit, remove the grill and check that all screws are fully tightend around the motor. 2. The fan blade is hitting the housing of the unit - turn off power to the unit, remove the grill and check that the blade is fully inserted on the motor shaft.

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How do I determine what size exhaust fan I need?

Although there are many factors that will determine what size exhaust fan you need, as a general rule, take the length times the width of your bathroom to come up with the square footage. Assuming the ceiling height is 8 feet, take the square footage and multiply it by 110% (or 1.1). This will give you the amount of ventilation needed for your bathroom. For instance a 10 foot by 10 foot bathroom with 8 foot ceilings would have a square footage of 100 sq. ft., take 100 times 110% to get 110. Y...

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Why won't my exhaust fan will not operate?

1. Check that there is power to the exhaust fan. The most common trouble is the circuit breaker is off or there is a blown fuse.2. Turn off power to the exhaust fan and check that all wires are properly connected. Refer to your specific model's installation instructions for proper wiring instructions.

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Will a ceiling fan or wall-mount utility fan serve as a range hood?

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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What is make up air?

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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Does my exhaust fan always need to be installed in the ceiling?

NO.  Several exhaust fans can be installed in a wall. The limiting factor will be the thickness of the wall cavity. Typical construction uses 2" x 4" studs which will limit the number of fans that will fit within this space. Always mount the exhaust fan as high up on the wall as possible. Exhaust fans with lights and units with heating functions should not be mounted within a wall.

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What is the best way to duct my exhaust fan?

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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Where is the best location to install my bathroom exhaust fan?

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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My exhaust fan is operating but the air is moving slower than normal?

Check the grill for build up and clean if needed or check for obstructions in the ductwork. A common obstruction is build up in the roof or wall cap such as birds nests or other debris.

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Where is the model number located on my range hood?

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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How do I order replacement parts?

Call the manufacture and reference the model number of the main unit.  Ask for the model number of the replacment part you need, and make sure to ask the name of ther person whom you spoke with.  Then simply call our customer service.Keep in mind that often times replacment parts can be expensive.  You'll be responsable for paying for a special non-stocking non-returnable order.  There are several alternative to ordering replacment parts which can be discussed with custo...

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There is water dripping from my bathroom exhaust fan. What do I do?

This is typically attributed to one of two causes:1. When hot air is being exhausted from the bathroom into cold ducting, some condensation might form that will travel back through the ducting, into your unit. This can usually be avoided by wrapping the ductwork with insullation, limiting the amount of condensation.2. In cold climates, ice can form on the roof or wall cap. When the hot air from the bathroom travels across this ice, it melts and travels back down the ducting into your unit. ...

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Do I have to exhaust my exhaust fan to the outdoors?

YES. To properly exhaust air, be sure to duct air outside. DO NOT vent exhaust air into spaces within walls or ceilings or into attics, crawl spaces, or garages. A build up of humidity could cause damage to your home.

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How do I get a copy of the instruction sheets?

Instruction sheets can be downloaded from many manufacture websites. Please go to the "Product Information" section of the manufacture website, and navigate to your particular model.

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How do I clean my exhaust fan?

MAKE SURE POWER IS SWITCHED OFF AT SERVICE PANEL BEFORE SERVICING THE UNIT. Clean your exhaust fan's grill with a mild detergent, such as dishwashing liquid, and dry with a soft cloth. NEVER USE ANY ABRASIVE PADS OR SCOURING POWDERS. Completely dry before restoring power. NEVER IMMERSE ELECTRICAL PARTS IN WATER. The fan assembly can be vacuumed when build up (dirt, lint, etc.) accumulates over time.

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Why do I need a bathroom exhaust fan?

Exhaust fans provide ventilation, helping to clear the room of steam and odors. Properly ventilating a bathroom helps deter the growth of mold and mildew by ventilating excess humidity from the room.

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Can I install my exhaust fan directly over the tub or in the shower?

Exhaust fans with a UL listing for installation over a tub or shower on a GFCI circuit can be installed over a tub or in a shower.  Units that include any type of heating fuction to them are not able to be installed over a tub or shower. Check you specific product for more information.

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Does it matter that there is insullation touching my exaust fan?

YES. Confirm your unit's IC (insullation contact) rating. Most  exhaust fans, exhaust fans with light, and heater combination units are IC rated to R40. Check your your specific units rating along with the insullation rating covering the unit. This information can be found on the specification sheet available through the manufacture web site. 

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