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 Feet Calculation Recommended Ventilation Rate
Less than 100 square feet 1 CFM per square foot of floor area Minimum of 50 CFM
More than 100 square feet Add the CFM requirement for each fixture present Add 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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Panasonic FV-10VSLB2

Panasonic FV-10VSLB2

Panasonic WhisperValueLite Contractor Pack of 4 Bathroom Fan Motor & Grill Assembly

Regular Price: $582.00
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Panasonic FV-08VSLB2

Panasonic FV-08VSLB2

Panasonic WhisperValueLite Contractor Pack of 4 Motor & Grill Assembly

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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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Panasonic FV-40VQ4

Panasonic FV-40VQ4

Panasonic Bathroom Fan, 380 CFM WhisperCeiling Ventilation - for 6" Duct

Regular Price: $405.00
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Panasonic FV-11VHL2

Panasonic FV-11VHL2

Panasonic Bathroom Heater Fan, 110 CFM WhisperWarm With Overhead Light, Nightlight for 4" Duct

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Panasonic FV-11-15VKL1

Panasonic FV-11-15VKL1

Panasonic Bathroom Fan, WhisperGreen Select Pick-A-Flow Speed 110, 130, or 150 CFM w/LED Light - 4" or 6" Duct

Regular Price: $386.25
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Panasonic FV-13VKML4

Panasonic FV-13VKML4

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

Regular Price: $383.25
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Nutone XN110HL

Nutone XN110HL

Nutone Bathroom Fan, 110 CFM Single Speed ULTRA GREEN Series w/Humidity Sensing & Light - for 6" Duct

Regular Price: $375.65
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Panasonic FV-08VKSE3

Panasonic FV-08VKSE3

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

Regular Price: $369.75
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Nutone ZN110ML

Nutone ZN110ML

Nutone Bathroom Fan, 110 CFM Multi Speed ULTRA GREEN Series w/Motion Sensing & Light - for 6" Duct

Regular Price: $367.17
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Panasonic FV-11VQCL6

Panasonic FV-11VQCL6

Panasonic Bathroom Fan, 110 CFM WhisperSense-Lite Ventilation w/ Light, Humidity & Motion Sensor - for 4" Duct

Regular Price: $361.50
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Panasonic FV-13VKSL4

Panasonic FV-13VKSL4

Panasonic Bathroom Fan, 130 CFM WhisperGreen Continuous & Spot Ventilation w/ Light - for 6" Duct

Regular Price: $358.50
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Panasonic FV-13VKSL3

Panasonic FV-13VKSL3

Panasonic Bathroom Fan, 130 CFM WhisperGreen Continuous & Spot Ventilation w/ Light - for 6" Duct

Our Price: $345.00
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Panasonic FV-05-11VKSL1

Panasonic FV-05-11VKSL1

Panasonic Bathroom Fan, WhisperGreen Select Pick-A-Flow Speed 50, 80, or 110 CFM Multi-Speed w/ LED Light - 4" or 6" Duct

Regular Price: $339.00
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Nutone ZN80ML

Nutone ZN80ML

Nutone Bathroom Fan, 80 CFM Multi Speed ULTRA GREEN Series w/Motion Sensing & Light - for 6" Duct

Regular Price: $338.19
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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.