Top 5 Best Bathroom Exhaust Fan With Humidity Sensor

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Keeping all spaces clean and dry is paramount to home maintenance and improvement. Next to the kitchen, the bathroom receives all human wastes. These even get mixed and dumped with a plethora of hygiene and cleaning chemicals, such as soap, shampoo, and bleach.

Although these chemicals are intended to wash away all the dirt, gunk, and germs, it is not enough to keep the bathroom 100% clean at all times.

The bathroom is directly connected to drainage pipes, which are not cleaned regularly. This means there is always a possibility that microorganisms stay lurking or thriving in the most unexpected crevices. To combat this, you would want to invest in the best bathroom exhaust fan with humidity sensor.

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The Problem With Humidity

Water is the source of all life. For that reason, leaving the bathroom wet and humid for prolonged periods directly equates to rancid bacterial and fungal growth. Obviously, that’s something you don’t want in your bathroom, so it is crucial to employ up-to-date building ventilation technologies.

To keep the bathroom clean and dry, install the best humidity sensing bathroom fan available. This device will help keep your bathroom well-vented and, in effect, dry and clean. With this, you won’t need to switch on the fan yourself. Instead, it automatically turns on upon detecting a preset humidity level around its proximity.

How Do You Choose the Best Humidity Sensing Bathroom Vent Fan?

The market is saturated with hundreds of options for bathroom vents, which is why it can be overwhelming to find the exact model you need. For that, rely on the following factors you’d want to consider when looking for one.

  • Sensor Options

Many household components are now designed to have automatic functional capabilities with the use of sensors. Examples of such devices include motion-activated lights, temperature-sensing air conditioners, and humidity-adjusting bathroom vent fans.

Some bathroom exhaust fans not only have integrated humidity sensors but also have a separate motion-sensing activator. Increased changes in interior air humidity levels activate the exhaust fan to maintain a desirable interior air quality.

As you move inside a bathroom, there will probably be some changes in humidity and air quality. A motion-activated sensor automatically activates an exhaust fan to maintain air quality. Furthermore, other options are also available to some products. Humidity sensing ranges can be adjusted, or a combination of motion-sensing and humidity-sensing switches can be set.

  • Rate of Air Transfer Versus Bathroom Size

Room size determines the minimum ventilation requirement for every space. Some bathroom exhaust fans have multiple fan speed settings, but others only have a single speed. Compute for the volume of your bathroom before purchasing an exhaust fan.

Each product has its own air transfer velocity ratings. Use the one with smaller CFM ratings for smaller-sized bathrooms.

  • Fan and Motor Noise Output

Exhaust fans also have ratings for loudness. More often than not, it is safe to argue that a bigger motor and fan mechanism means a noisier setup. To make sure you have the desired product, look for its loudness rating in sones. Understand that anything that has a rating of 1.0 sone or lower means it is exceptionally quiet.

  • Device Dimensions

Bathroom exhaust fans, although generally built into metallic enclosures, have different dimensions and mounting options. This signifies that not every available exhaust fan in the market can fit into any ceiling or wall construction.

It is better to check all installation clearances inside your bathroom ceiling before selecting and purchasing your next bathroom exhaust fan.

Here are the Best Bathroom Exhaust Fans With Humidity Sensor

Now that you have quite an understanding of the top considerations in selecting the best exhaust fan, dive into the following reviews to get a rundown of what the best brands have to offer.

1. Panasonic FV-0511VQC1 WhisperSense Ventilation Fan

Panasonic FV-0511VQC1 WhisperSense DC Ventilation Fan, 50-80-110 CFM , White
379 Reviews
Panasonic FV-0511VQC1 WhisperSense DC Ventilation Fan, 50-80-110 CFM , White
  • Installation: Features a 4 or 6-inch duct adaptor ideal for renovations, assisted living and dorms
  • Precision Spot Ventilation: Quiet and powerful ventilation while removing moisture and pollution
  • Dual Sensor Technology: Provides built-in redundancy for automatic moisture and odor control
  • Flexible Installation: Comes with Flex-Z Fast bracket for easy, fast and trouble-free installation
  • Energy Star Rated: Delivers powerful airflow without wasting energy

Backed by decades after decades of experience, there’s no denying that Panasonic has built a name for itself in the world of home products. It has been manufacturing a vast array of electronics and appliances since its foundation in 1918.

Panasonic has a large amount of ventilation equipment. Among its residential-level ventilation fans is the Panasonic FV-0511VQC1 WhisperSense Ventilation Fan.

The Panasonic FV-0511VQC1 WhisperSense Ventilation fan provides high-precision locational ventilation. It uses enterprise content management (ECM) SmartFlow technology in the design of its DC motor for optimum air transfer output. With its variable fan speed selector, airflow is adjustable between 50, 80, and 110 CFM. This is the only bathroom exhaust fan on this list that has the Pick-A-Flow Speed Technology. This allows you to adjust air transfer speeds to your liking.

This bathroom exhaust fan uses dual sensor technology that provides built-in redundancy for automatic switching. It can detect motion as well as moisture changes in the bathroom. The fan automatically turns on as it detects motion.

If the ambient humidity reaches an optimal level, the humidity sensor turns the fan off. Also, it turns off when there’s no movement in the bathroom, and the humidity levels are within the preset conditions. Alternatively, a large change in humidity turns the device on. It shall turn off as soon as the humidity level becomes comfortable.

The humidity sensor on this device can be set to turn the exhaust fan on after detecting a preset relative humidity level of between 30% and 80%. In addition, the switching function of the exhaust fan can also be set to have a delay time of 30 seconds or up to 60 minutes.

Because of its low energy consumption, this bathroom fan is ENERGY STAR certified, California Title 24 compliant, and UL listed for GFCI installations above shower enclosures or bathtubs.

The FV-0511VQC1 WhisperSense has a loudness value that ranges from below 0.3 sones to 0.9 sones. This means it is very quiet. Weighing 11.2 pounds, it has a full galvanized steel enclosure with an outlet adapter that is switchable between four and six inches.


  • Adjustable fan speed
  • Motion and humidity sensing
  • Very quiet
  • Convenient installation even from below the ceiling
  • Embedded thermal fuse protection


  • Extremely sensitive motion sensor

2. Broan-NuTone QTXE110S Ultra-Silent Humidity-Sensing Ventilation Fan

Broan-Nutone QTXE110S Ultra-Silent Ventilation Fan, Exhaust Fan for Bathroom and Home, ENERGY STAR Certified, 0.7 Sones, 110 CFM , White , 6' Round
161 Reviews
Broan-Nutone QTXE110S Ultra-Silent Ventilation Fan, Exhaust Fan for Bathroom and Home, ENERGY STAR Certified, 0.7 Sones, 110 CFM , White , 6" Round
  • VERSATILE FAN: Ventilation fan helps eliminate , tobacco smoke, and cooking odors in a near-silent performance in rooms up to 105 sq. ft. to keep your house smelling fresh and clean
  • EFFICIENT: Operates at 110 CFM and 0.7 Sones and is motor engineered for continuous operation to provide the best performance
  • EASY INSTALLATION: Includes 6" ducting for high-quality performance and hanger bars to provide a fast installation in 2" x 8" construction spaces
  • SENSOR: Automatically powers on once it detects a rise in and features an auto on/off switch programmable from 5-60 minutes
  • SAFE: This ENERGY STAR* qualified fan is HIV certified and UL listed for use over bathtub or shower when installed with a GFCI protected branch circuit
  • 0.3 A

Broan-NuTone has been a leader in residential ventilation and good air quality for 85 years. It manufactures a variety of exhaust fans for bathrooms. These include bathroom exhaust fans with embedded Bluetooth speaker and bathroom lighting equipment integrated into vent fan assemblies.

Of course, they also have bathroom exhaust fans that can detect indoor air moisture quality changes. One of the humidity sensing vent fans from this company is the Broad-NuTone QTXE110S.

With an air transfer rate of 110CFM, it unbelievably operates at a low noise level of 0.7 sones. This device boasts the Sensaire humidity sensing technology, too, which senses abrupt humidity changes up to four times faster than other brands and models.

This unit’s humidity sensor has automatic switching with a programmable shutoff from five to 60 minutes. Also energy-saving, it is ENERGY STAR certified and UL approved for GFCI installations above shower enclosures and bathtubs.

This fan is powerful enough for bathrooms up to 100 square feet. What’s even more impressive is that its permanently lubricated AC motor can run smoothly and continuously.

Weighing 11 pounds, this device offers easy installation. Its corrosion-resistant galvanized steel enclosure makes it great for bathroom installations. The outlet is suitable for six-inch exit duct connections.


  • Adjustable humidity sensor settings
  • Great price
  • Low noise output
  • 3-year warranty


  • No motion sensor included
  • A bit sensitive to ambient humidity
  • Sometimes fan won’t turn off as necessary because of abrupt ambient temperature and humidity changes

3. Delta BreezSignature VFB25AEH Exhaust Bath Fan With Humidity Sensor

Delta Electronics (Americas) Ltd. VFB25AEH BreezSignature Humidity Sensor Fan, 130 CFM, White
673 Reviews
Delta Electronics (Americas) Ltd. VFB25AEH BreezSignature Humidity Sensor Fan, 130 CFM, White
  • Noise level of 2.0 sones
  • Precision engineered with DC brushless motor for extended reliability
  • Easily switch in and out of humidity sensing mode by toggling wall switch
  • ENERGY STAR qualified for efficient cost-saving operation
  • Precision engineered with DC brushless motor for extended reliability, this fan will outlast many household appliances
  • 0.36 A

For almost 50 years, Delta Electronics has produced components, power systems, thermal management, automation, and infrastructure solutions. One of their best products is the Delta BreezSignature VFB25AEH Exhaust Bath Fan with Humidity Sensor.

Operating with an airflow rate of 130 CFM, it has the largest transfer capacity among the products in this list. This capacity comes with a price, though. Because of its high CFM, this unit has a higher operating noise rating of 2.0 sones. Nonetheless, it uses a brushless DC motor that saves up to 74% of energy consumption compared to other brands.

Running at only 19.1 watts with its size, it can transfer 7.1 CFM/watt. This makes it ENERGY STAR certified, as it exceeds the rating requirements by a stunning factor of 685% for its transfer capacity. The average computed annual energy cost for this device 24/7 is only at a little more than USD 23.

The humidity-sensing functionality on this device can be switched on or off. The device has an included wall switch for toggling between humidity sensing mode and manual mode. A humidity set-point can be adjusted between 50% to 80% relative humidity. Lastly, it has a blue and red LED indicator for humidity-sensing mode and full speed mode, respectively.


  • Highest CFM on this list
  • Lightweight at 9.81 pounds
  • Rust-proof galvanized steel enclosure
  • 3-year limited warranty


  • Noisiest fan among the choices on this list
  • No motion sensor

4. Panasonic FV-08VQC5 WhisperSense Ventilation Fan

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With all the awards attributed to Panasonic, there is no question that most of their products also adhere to various certifications and codes. For this reason, it comes as no surprise that another one of the best ventilation fans with humidity sensor comes from this brand.

Compared to the Panasonic FV-0511VQC1 WhisperSense, the Panasonic FV-08VQC5 only has a single air transfer velocity of 80 CFM. This smaller WhisperSense also has the versatile functionality of automatic motion and humidity sensing.

The exhaust fan turns on as soon as it detects motion or a change in air moisture. Apart from that, its factory-set relative humidity of 50% is also adjustable between 30% to 80%.

The following certifications are given for this particular model: ASHRAE 62.2, LEED, CALGreen, and California Title 24. It also has a very low loudness rating of just 0.3 sones.

This model weighs 12.95 pounds. Its enclosure is also made of galvanized steel for protection against rust. Parts have a limited warranty of 3 years.


  • Humidity sensor works perfectly
  • Dual sensor (motion and humidity)
  • Works quietly
  • Included warranty


  • Highly-sensitive motion sensor
  • Turns the fan on even for very minor movements by the door

5. Kaze Appliance SEP120H Ultra-Quiet Bathroom Exhaust Fan With Humidity Sensor

KAZE APPLIANCE SEP120H Ultra Quiet Bathroom Exhaust Ventilation Fan (120 CFM, 0.3 Sone, Humidity Sensing)
135 Reviews
KAZE APPLIANCE SEP120H Ultra Quiet Bathroom Exhaust Ventilation Fan (120 CFM, 0.3 Sone, Humidity Sensing)
  • HOUSING SIZE: Ceiling opening size is 11 3/8" x 10 1/2". Resizing your existing ceiling opening will be needed if your current fan housing is smaller.
  • SUPER QUIET - Sound level of 0.3-Sones at 120-CFM. Suitable for bathroom size up to 120 square feet.
  • HUMIDITY SENSING - Automatically switch on/off the fan unit to maintain desirable humidity level and hands free operation.
  • INSTALLATION - Sliding hanger bars allow fan housing to be positioned accurately anywhere between the framing. The bars span up to 24 inch and can be used on all types of framing.
  • DUCTING - Removable 6 inch metal duct with back draft prevention damper. Includes 4 inch duct reducer.
  • RELIABILITY - Proudly stand behind our products with 3 year warranty.

Kaze Appliances specializes in the manufacture of ventilation fans. They have various exhaust fan options that include LED light attachments, compact fluorescent light attachments, humidity and motion-sensing controls, and easy installation properties.

One of their products is the Kaze Appliances SEP120H Ultra-Quiet Bathroom Exhaust Fan with Humidity Sensor.

This unit has a fan that can be set to run relative humidity settings. This means it can be adjusted between 50% and 80% air moisture. Time delay after fan activation can also be set on the device between five and 30 minutes.

Although it runs at an air transfer rate of 120 CFM, it is super-silent. In fact, it has an impressive loudness rating of only 0.3 sones. As such, this model is one of the few that offer the highest airflow capacity with the lowest noise output.

With these features, it can be used on bigger bathrooms.The SEP120H Bathroom Exhaust Fan weighs 11.58 pounds. It has a three-year limited warranty on its parts. When it comes to installation, this device’s outlet can be connected to a six-inch flexible duct.


  • Extremely quiet
  • Suitable for medium to large-sized baths
  • Impressively high CFM
  • Includes a warranty


  • Factory set fan startup delay time of 1 minute
  • Body not fully enclosed
  • No motion sensor

Frequently Asked Questions

1. Why do manufacturers integrate a humidity sensor into bathroom exhaust fans?

It is crucial to keep bathroom air humidity at optimum levels. However, it is not always convenient to have a separate manual exhaust fan switch you can turn on for when the air feels very humid.

Comfort in air quality is different among many users. Having a device to keep reading the actual humidity can level out the requirement for manually turning on a ventilation fan. Automatically switching exhaust fans are very convenient for maintaining the quality of interior air within optimum levels.

2. How does a humidity sensor work in exhaust fans?

Also called a hygrometer, humidity sensors read air moisture and air temperature. There are various types of humidity sensors, and some are programmed to have adjustable readings.

Since it is a sensor, it does automatic humidity readings and reports it back to a switchboard within the exhaust fan mechanism. This switchboard then turns the ventilation fan on if it receives a high humidity reading from the humidity sensor.

Then, the fan stays on for a certain period or until the humidity sensor directs the switchboard that the relative humidity within the room has been achieved for a certain comfort level.

3. How accurate are humidity sensors in bathroom exhaust fans?

Humidity sensors built into ventilation devices have readings that translate to about 5% more or less than actual accurate measurements.

4. What is the best humidity level for interior space?

As suggested by health experts, the level of moisture or vapor suspended in interior air should be 30% to 50% of its total moisture-holding capacity. Anything more significant than this can feel very uncomfortable and can affect everyone’s health.


It is always easy to turn on the bathroom vent fan when its power supply is connected to the bathroom lights. However, it would be way better if the bathroom ventilation kicks in whenever it detects an unwanted change in internal humidity.

Since good architecture permits the creation of naturally lit bathrooms, it would be rather unnecessary if the bathroom lights have to be turned on just to start up the bathroom ventilation.

The simplest and most convenient way of keeping your bathroom clean and with the appropriate amount of moisture-laden air is by choosing the best bathroom exhaust fan with humidity sensor. Just have your preferences lined up, and choose from the top-graded options in this list.