Bath Fans

Bath fans bring fresh air into a bathroom properly ventilating and removing moisture. Not only does this make the space much more comfortable but removes bathroom humidity. A bath fan plays a critical need to protect the bathroom's interior walls and to prevent dangerous and unattractive mold issues.

Choose the proper size bathroom fan is just as important. Should the fan not be powerful enough, it will not remove the moisture adequately within a reasonable time frame. Conversely, a bath fan that is too powerful may be too loud or energy inefficient for the space. Over-performing bath fans can also take away too much heated air in the winter or cooled air in the summer. This comprises the energy efficiency of the house.

Here's a bathroom fan size chart with the recommended ventilation rates depending on space and fixtures present:

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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 9427P

Nutone 9427P

Nutone Bathroom Fan, 70 CFM 2-Bulb Lamp Heater - for 4" Duct

Regular Price: $122.99
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Nutone QTXEN080FLT

Nutone QTXEN080FLT

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

Regular Price: $224.99
On Sale: $157.99
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Panasonic FV-13VKM3

Panasonic FV-13VKM3

Panasonic Bathroom Fan, 130 CFM WhisperGreen Continuous Ventilation w/ Motion Sensor- for 6" Duct

Regular Price: $288.00
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Nutone 8663RP

Nutone 8663RP

Nutone Bathroom Fan, 100 CFM w/ Light & Night Light - for 4" Duct

Regular Price: $154.99
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Panasonic FV-11VKL4

Panasonic FV-11VKL4

Panasonic Bathroom Fan, 110 CFM WhisperGreen-Lite Continuous Ventilation w/ Light - for 4" Duct

Regular Price: $315.75
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Panasonic FV-05VFL4

Panasonic FV-05VFL4

Panasonic Bathroom Fan, 50 CFM WhisperFit Low Profile Ventilation w/Light - for 4" Duct

Regular Price: $188.25
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Broan XB110L

Broan XB110L

Broan Bathroom Fan, 110 CFM Single Speed ULTRA GREEN X1 Series w/Light & Energy Star Rated - for 6" Duct

Regular Price: $342.99
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Nutone QTXEN110FLT

Nutone QTXEN110FLT

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

Regular Price: $255.99
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Nutone 763RLN

Nutone 763RLN

Nutone Bathroom Fan, 50 CFM Decorative Series w/ Light - for 4" Duct

Regular Price: $49.99
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Panasonic FV-08VFM2

Panasonic FV-08VFM2

Panasonic WhisperWelcome 80 CFM Ventilation Fan, Motion Sensor

Regular Price: $191.25
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Panasonic FV-10VS3

Panasonic FV-10VS3

Panasonic Bathroom Fan, 100 CFM WhisperValue Super Low Profile Ventilation - for 4" Oval Duct

Regular Price: $111.00
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Panasonic FV-08VKME3

Panasonic FV-08VKME3

Panasonic Bathroom Fan, 80 CFM WhisperGreen-LED Ceiling Mounted Ventilation DC Motor w/ LED Light & Motion Sensor - for 4" Duct

Regular Price: $407.25
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Broan XB110

Broan XB110

Broan Bathroom Fan, 110 CFM Single Speed ULTRA GREEN X1 Series & Energy Star Rated - for 6" Duct

Regular Price: $237.99
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Nutone QTXEN050

Nutone QTXEN050

Nutone Bathroom Fan, 50 CFM QuietTest Series, Energy Star Rated - for 6" Duct

Regular Price: $141.99
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Nutone 9417DN

Nutone 9417DN

Nutone Bathroom Fan, 70 CFM 1-Bulb Lamp Heater - for 4" Duct

Our Price: $66.49
as low as: $61.84

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How to Select

How To Select a Bath Fan

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

Bath 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 of a bath fan 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. Bath 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:

Bath 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.