Bath Fans

A bath fan's sole purpose is to remove moisture from the bathroom. Removing bathroom humidity is critically important to avoid mold issues and to protect the bathroom'a interior walls.

The proper size fan is very important. Should the fan not be powerful enough, it will not remove the moisture adequately within a reasonable time. Conversely, a bath fan that is too powerful may be too loud. It will take away conditioned air such as heated air during the winter months Or conditioned air during the summer months compromising the efficiency of the house.

Most bathroom fans should run for approximately 20 minutes depending on the size of the bathroom.

Bathroom Fan Size Calculation
Bathroom Square FeetCalculation Recommended Ventilation Rate
Less than 100 square feet1 CFM per square foot of floor areaMinimum of 50 CFM
More than 100 square feetAdd the CFM requirement for each fixture presentAdd 50 CFM for each fixture
Example: 1 toilet (50 CFM)
1 shower (50 CFM)
1 whirlpool tub (100 CFM)
Minimum 200 CFM Fan
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Nutone QTXEN110SFLT

Nutone QTXEN110SFLT

Nutone Bathroom Fan, 110 CFM QuietTest Energy Star Rated w/Light & Humidity Sensing - for 6" Duct

Regular Price: $347.99
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Nutone QTXEN150

Nutone QTXEN150

Nutone Bathroom Fan, 150 CFM QuietTest Series, Energy Star Rated - for 6" Duct

Regular Price: $208.99
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Nutone QTRN080

Nutone QTRN080

Nutone Bathroom Fan, 80 CFM QuietTest Series - for 4" Duct

Our Price: $94.99
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Panasonic FV-08VKL3

Panasonic FV-08VKL3

Panasonic Bathroom Fan, 80 CFM WhisperGreen-Lite Continuous Ventilation w/ Light - for 4" Duct

Our Price: $275.25
as low as: $255.98

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Panasonic FV-08VFL4

Panasonic FV-08VFL4

Panasonic Bathroom Fan, 80 CFM WhisperFit-Lite Low Profile Energy Star Rated w/ Light - for 4" Duct

Regular Price: $215.25
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Broan QTRE080R

Broan QTRE080R

Broan Bathroom Fan, 80 CFM Easy Retro-Fit QuietTest Silent Series - for 4" Duct

Our Price: $129.99
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Nutone QTREN110

Nutone QTREN110

Nutone Bathroom Fan, 110 CFM QuietTest Series Energy Star Rated - for 4" Duct

Regular Price: $159.99
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Nutone QTREN110FLT

Nutone QTREN110FLT

Nutone Bathroom Fan, 110 CFM QuietTest Series w/Light, Energy Star Rated - for 4" Duct

Regular Price: $230.99
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Nutone QTRN110L

Nutone QTRN110L

Nutone Bathroom Fan, 110 CFM QuietTest Series w/Light & Night Light - for 4" Duct

Our Price: $165.99
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Nutone QTXEN150FLT

Nutone QTXEN150FLT

Nutone Bathroom Fan, 150 CFM QuietTest Series w/Light, Energy Star Rated - for 6" Duct

Regular Price: $288.99
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Nutone QTXEN110

Nutone QTXEN110

Nutone Bathroom Fan, 110 CFM QuietTest Series, Energy Star Rated - for 6" Duct

Regular Price: $169.99
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Broan XB80L

Broan XB80L

Broan Bathroom Fan, 80 CFM Single Speed ULTRA GREEN X1 Series w/Light & Energy Star Rated - for 6" Duct

Regular Price: $272.70
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Nutone QTXEN080

Nutone QTXEN080

Nutone Bathroom Fan, 80 CFM QuietTest Series, Energy Star Rated - for 6" Duct

Our Price: $115.20
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Nutone QTREN080FLT

Nutone QTREN080FLT

Nutone Bathroom Fan, 80 CFM QuietTest Series w/Light, Energy Star Rated - for 4" Duct

Our Price: $140.75
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Nutone 9093WH

Nutone 9093WH

Nutone Bathroom Fan, 70 CFM QuietTest Series with Heater & Light - for 4" Duct

Our Price: $234.99
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How to Select

How to Select a Bathroom Fan

Selecting the proper bathroom fan for your application is important to maximize the lifespan of the fan and parts.

Bathroom Fan Manufacturers:

Deciding which manufacturer to purchase from is important. Often times, manufacturers use different quality parts based on the given price point. Economy grade fans may use less durable parts and may have a slightly shorter lifespan. Whereas, higher end models typically are quieter, last longer, and have more power.

CFM Rating:

The CFM rating refers to Cubic Feet per Minute. This is the volume of air that is moved by the fan during a 60 second period.  The CFM rating is important in case you are installing the fan in an area requiring quick ventilation, such as a bathroom or kitchen. Bathroom fans that have a higher CFM rating will be able to remove smoke and steam much faster than less powerful fans. For small areas such as single bathrooms, a 50-100 CFM fan will suffice, however, for kitchen applications, for large bathrooms, or steam rooms, higher power models are recommended.

Duct Size:

Most bath fans use a 4” duct to output the air from the fan. If you are replacing a bathroom fan, you will want to check the exiting duct size that is being used by your ventilation system to reduce further modifications. If your exiting duct size is limiting the amount of air flow through your system, you may consider using a larger diameter duct to reduce air pressure in your system.

Bath Fan Types:

At Westside Wholesale, we sell many types of fans based on your preference. Combination bathroom fans include features such as night light, heaters, and humidity sensors depending on your needs.

Fan Loudness & Noise:

Bathroom fans come in several ratings of noise level from Standard to Super Quiet. The output noise level is rated in Sones, to give a accurate measure of what to expect from your fan. Super Quiet bath fans can reach a Sone level as little as <0.3 Sones. At this level, the fan is virtually silent and produces less than 1/3rd the noise of a running refrigerator. The Sone level has a direct impact on the price point of the fan, meaning that less expensive fans typically generate more noise.

Installation Application:

If your application is a retrofit, than it is important to make sure the dimensions of the fan you select match the dimensions of the fan to be replaced to reduce rough in time and effort. It is also important to know if the fan is hardwired or if it has a standard outlet plug.