Best Bathroom Exhaust Fan With Humidity Sensor

Who doesn’t love to enjoy a relaxing and luxurious time in their shower? Surely, we all do!

But the humidity and steam that accompanies these showers can heavily spoil the air quality in your bathroom. It is true unless, of course, you are using the best bathroom exhaust fan with humidity sensor.

A humidity-sensing bathroom fan is used to promote proper ventilation, reduce excess moisture levels, and improve airflow. In short, it helps to remove excess moisture to create the ideal environment in your bathroom.

It reduces humidity by exhausting it outdoors through your home’s ductwork. This, in turn, helps prevent the growth of mold and mildew and maintains healthy air quality in your shower.

If you are looking for a high-quality bathroom exhaust fan with a humidity sensor, then you have come to the right place. In this post, I will not only suggest the best bathroom exhaust fans but also discuss important details related to them.

In the list below, I have covered some of the best bathroom fans with humidity sensorsThese products are selected based on performance, quality, and price.

Read Also: The 6 Best Bathroom Exhaust Fans With Bluetooth Speakers

I have reviewed each of the fans in detail to give you a good idea about what you are getting. Go through the details, so you can pick the best bathroom exhaust fan with a humidity sensor.

Things To Consider When Buying Humidity Sensing Bathroom Fan

When buying the best humidity sensing bathroom fan, you need to keep certain important things in mind. Go through the factors below to get an idea.



Bath fan with humidity sensors is available in different price ranges.

Before you set out to buy one, determine your budget, so you can narrow down your options.

Once you know how much you are willing to spend, it becomes easier to find the best bath vent fan with a humidity sensor within your price range.

Noise level

noise level

All bathroom fans make some amount of noise. But some are louder than others. When buying a humidity sensing bathroom fan make sure you check the noise levels.

You should choose a less noisy model, so it doesn’t interfere with your peace while showering. Modern bath fans are made for silent operation.

They are so quiet that you will hardly know it is on.

Energy use

cfm cubic per minute

Energy use refers to the amount of energy consumed by a bathroom exhaust fan. If you don’t want to spike up your monthly energy bills, then you should opt for a model that is certified by Energy Star.

This indicates that the fan is energy-efficient and yet intelligent and powerful. Installing an energy-efficient humidity sensing bathroom fan can help you save a lot of money on energy bills. They consume very little energy and are perfect for a bathroom setting.


The efficiency of a bathroom fan is measured in terms of CFM or Cubic Feet per Minute. It measures the total volume of air in cubic feet for each minute it moves.

In the case of a bathroom fan, it indicates the amount of air it can move in a minute. This determines how well your bathroom fan will perform. For a bigger bathroom, you will need a fan with higher CFM and vice versa.

Sensor adjustments


Humidity improves the overall efficiency of a bathroom exhaust fan with humidity sensor. Not just that, but it also helps conserve energy.

A sensor monitors the moisture levels in your bathroom and activates the fan whenever the humidity level rises above a certain level. It turns off when the moisture level is low.

You should go for a model that allows you to adjust the sensors. This will let you set the moisture level at which the fan should turn on.

Bathroom Size

You need to buy the best bathroom exhaust fan with humidity sensor based on the size of your bathroom. This is simple logic.

If you have a bigger bathroom, you will need a bigger bath fan and vice versa. The fan should be big and efficient enough to cover the total area of your bathroom. Therefore, determining the bathroom size is very important.

Fan size

fan size

Lastly, you also need to consider the size of the fan. You shouldn’t buy anything too big or too small. The best is to buy a fan size that is right for your bathroom size.

Smaller bath fans have lower CFMs, and bigger bath fans have higher CFMs. You need to choose a fan size that is suitable for your bathroom.

It should be able to promote proper ventilation in your shower.

Delta BreezGreenBuilder With Adjustable Sensor

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My first choice is Delta Breez 80 cfm which is one of the best bath fans with humidity sensing you will find.

It comes with a reliable Delta DC brushless motor for powerful performance. The compact, lightweight design, allows for quick installation.

It is designed for quiet operation at 0.8 sones, so it doesn’t interfere with your peace while showering.

The indicator light underneath the grille assures you that the fan is running. The humidity sensor is adjustable between ~50% to ~80% RH.

When humidity rises above the set point, the fan runs at full speed. When the humidity is below the set point, it runs continuously at a pre-set lower level.

  • Energy efficient
  • Quiet operation
  • Easy installation
  • High performance
  • None to mention

Panasonic WhisperSense

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Panasonic fan with humidity sensor comes with superior ventilation power to quickly remove moisture and contaminated air from your bathroom.

It gives you the promised CFM power rating as mentioned in the box.

This is a powerful bath fan designed for silent operation. It is capable of removing both moisture and pollution.

The Dual Sensor Technology provides for automatic odor and moisture control. It is an energy-star-rated fan that consumes very little energy.

  • Flexible installation
  • Energy star rated
  • Silent operation
  • Dual sensor technology
  • Difficult installation instructions

Delta BreezSmart Bath Fan

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Delta BreezSmart bathroom fans with humidity sensor is a reliable bath fan with all the right features you need.

It is equipped with a powerful DC brushless motor that enables it to deliver higher CFMs at a low noise level of <0.3 sones.

Not just that, but it also energy efficient. Compared to other bath fans, it consumes very little energy.

It makes a great buy for residential ventilation. It features an indicator light underneath the grille that lets you know that the fan is working.

It comes with an efficient adjustable humidity sensor that can be set-points between ~50% to ~90% RH. If you want a cost-effective bath with a humidity sensor, this could be the perfect option for you.

  • Low noise level
  • Higher CFM
  • Consumes less energy
  • Durable
  • Sensor is not up to the mark

Aero Pure Fan

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Aero pure bathroom exhaust fan with humidity sensor is an energy-efficient bath fan designed for superior performance.

It is packed with several features that you will find useful. To start with, it comes with a humidity sensor and a LED light to illuminate your bathroom.

It gives you the choice of three airflow settings so that you can adjust it as per your requirements.

The adjustable switch is located on the body of the fan. Unlike most other bath fans, you don’t have to struggle with the installation process. It is provided with mounting adjustable installation brackets and a duct adaptor.

  • Three airflow settings
  • Installation brackets included
  • Greta performance
  • LED light
  • Not easy to install

Broan-Nutone Silent

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The next best option we have is a Broan-Nutone ultra silent humidity sensing fan. If you want to improve ventilation in your bathroom, then this could be the ideal option for you.

It efficiently removes humidity, cooking odors, and tobacco from your room and bathroom. However, the best thing is that it operates silently, so you don’t have to feel disturbed.

It can easily cover an area of up to 105 sq. ft. With this silent exhaust fan, you can keep your bathroom clean and smelling fresh.

It is equipped with Sensaire technology that detects the rapid rise in humidity over time. It also has the auto shut-off feature.

You can set the time from 5 to 60 minutes. Also, it can be installed in all types of construction. Unlike other bath fans, this one is easy to install.

  • Energy efficient
  • Suitable for installation in all types of construction
  • Auto shut-off feature
  • High performance
  • Not suitable for big bathrooms

Broan-NuTone AE110

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This is a high-quality ventilation fan that will help you to create the perfect bathroom environment. It is both quiet and energy-efficient. It has everything that you would want in a bath fan.

It operates with 110 CFM and 1.0 Sones to help control the air quality in your bathroom. It is also powerful enough for rooms of up to 105 sq. ft.

With powerful ventilation, it reduces humidity quickly. With this bathroom fans with humidity sensor, you can always have a clean and comfortable surrounding in your bathroom or room.

The TrueSeal Damper Technology helps reduce air leakage by up to 50% and thus, resulting in better performance.

  • Silent operation
  • Removes humidity quickly
  • Reduces air leakage by 50%
  • Long-lasting
  • Not that silent

Hauslane Electric Exhaust Bath Fan

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With Hauslane Electric Bathroom Fan, you can easily regulate your bathroom and remove humidity.

The built-in sensors detect moisture immediately and pull it out from the air to give you the perfect bathroom environment.

It comes with a 120 CFM rating that makes it powerful and ideal for home ventilation. It can also remove smells and odors from rooms up to 120 square feet.

You can use this bathroom fan without disturbing others. This is possible because of its ultra-silent functioning.

It is provided with a double hanger bar system for easy installation. It also features a 6W LED light panel to provide proper illumination. Lastly, it is backed by a 2-year limited guarantee from the manufacturer.

  • Quick installation
  • Ultra-silent
  • LED light panel
  • 2-year guarantee
  • None to mention

Delta BreezSlim

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Lastly, we have the Delta BreezeSlim bathroom exhaust fan with a humidity sensor. This is an energy-star-qualified bath fan with innovative brushless DC motor technology.

If you want a powerful and efficient bath fan, then this could be the best bet for you. It has a humidity sensing mode that automatically activates the fan when humidity is above 60%. It stops when humidity is below 60%.

It is suitable for both wall and ceiling installation. The compact design allows for quick installation. It also promotes quiet operation at 2.0 sones, so you can enjoy your shower peacefully.

It carries an energy efficiency rating of approximately 5.8 CFM/watt. It also includes an Amber LED indicator light to show full speed modes and humidity sensor.

  • Automatic operation
  • Quiet operation
  • Includes an Amber LED indicator light
  • Quick installation
  • None to mention

Benefits Of Installing A Humidity Sensor Exhaust Fan

A humidity sensor exhaust fan comes with a lot of benefits. Before you set out to buy one, let me shed some light on all the benefits you will get from it.

Protects your bathroom from damages

First of all, it helps protect your bathroom. Excessive moisture levels can damage your bathroom in various ways.

But a humidity sensor exhaust fan helps remove excess moisture and humidity to create the perfect environment in your bathroom.

Saves damage repair costs

Fixing bathroom problems caused by humidity can cost you a lot. But if you have a humidity sensor bath fan, it can prevent damages in the first place.

As a result, you don’t have to spend any money on damage repair. The sensor fitted in the fan ensures that humidity levels in your bathroom are within a safe range.

Prevents the growth of mold and mildew

A bath fan with humidity sensors can also prevent the growth of mold and mildews in your bathroom.

As you already know molds grow in humid conditions and a bathroom is the perfect breeding ground for such a nuisance.

But if you have a humidity sensing bath fan, your bathroom will stay protected from mold and mildew growth.

Automatic shut off feature

Another advantage of a bathroom exhaust fan with humidity sensor is that it automatically shut off when the humidity levels fall below the set limit.

This automatic shutoff feature is highly useful in preventing accidents that are likely to happen when a fan is left running for a long time.

When you leave a fan running for hours, it gets overheated, which can lead to a fire accident. But the humidity sensor in this type of bath fan resolves this problem.

The sensor activates the fan to turn on/off according to the prevailing humidity levels and the set limit.

No manual operation needed

A bath fan with a humidity sensor is convenient to use as you don’t have to turn it on manually. It can turn on and off automatically as soon as it senses humidity levels.

Humidity Sensing Bathroom Fan Switch

humidity bathroom fan switch

Maintaining the right humidity level in your bathroom is very crucial. But if your bathroom has high humidity levels, you can find a humidity sensing bathroom fan switch to be highly useful.

High humidity levels lead to mold and mildew growth, which has potential health risks. Not just that, but it also damages the walls and beauty of your bathroom.

In this case, a bathroom exhaust fan can be of great help. But using it continually can spike up your electric bills. So, what should you do?

A humidity-sensing bathroom fan switch can resolve this problem.

A bathroom humidity sensor switch comes with a built-in sensor within a switch. It can detect and measure the level of moisture in the air.

These types of switches are specially built for home use.

A sensor switch is designed with a very sensitive microprocessor and humidity sensing technology. This helps it to continually measure humidity.

Whenever it detects overly humid air, it automatically switches the bath fan on. You can have a humidity sensor already integrated into a fan or you can get it in your wall switch.

Can a bathroom fan and light be on the same switch?

Many of you may feel the need to wire a bathroom fan and light on the same switch. Well, this is not exactly a bad idea and I will tell you why.

Whenever you use the bathroom, you switch on the lights. While running the exhaust fan helps you to keep the moisture levels low and thus, prevent mold and mildew from growing in your bathroom.

Condensation from hot water can reduce the life expectancy of a light bulb or light fixture.

But if you switch on the bathroom exhaust fan with humidity sensor, the water won’t get the chance to condense as the fan will pull out the vapor.

Running the lights and the fan on the same switch can be beneficial. It can help you solve these issues, so you will have a lovely bathroom space to enjoy.

How to wire bathroom fan with humidity sensor?

wiring sensor for humidity

Many of you want to know how to wire bathroom fan with humidity sensor? Let’s talk about that in this section.

A bath fan with a humidity sensor typically has six wires: 2 black, 2 white, 1 brown, and ground. The brown wire is for a humidity sensor or speed control.

The humidity sensor and fan can be switched independently to give you a choice of operational modes.

Switching on the humidity sensor gives it control of the fan cycle, but turning on the fan directly overrides that mode.

In other words, the fan and humidity control can be operated separately. You should use a 1- or 2- function wall control. It’s better to avoid using a dimmer switch for humidity control.

You can hook the brown wire to a switch. Alternatively, you can connect it directly to the hot conductor to allow the humidity sensor to function full-time.

Make sure that both the black wires and the brown wire of the fan get a power supply when you turn it on. Now that you know how to wire bathroom fan with humidity sensor, it should be easier for you to get it done.

For those who want to know how do you wire a humidistat to a fan, you should connect a permanent live, neutral, and earth to the fan.

Make sure that the switched feed is connected to a separate pull switch above the WC with an on/off indicator. This will let you switch on the fan independently.

Choosing The Right CFM Exhaust Fan Size

For those who didn’t have an idea, bathroom exhaust fans are rated for the amount of air they can move.

This is measured in CFM or cubic feet per minute. It is an important consideration when buying a CFM exhaust fan for your bathroom.

Standard exhaust fans are suitable for bathrooms that are 100 square feet or less. You need at least 1 CFM per square foot of room area. To determine the total square footage of your bathroom, multiply the length times the width.

For example, let’s say your bathroom is 7 feet wide and 8 feet long, its square footage is 56. This means you need to get a fan with at least 54 CFM. But there are other things as well that matter.

Firstly, it is always a good idea to oversize the bathroom vent fan slightly. So if the measurement is 56-square-foot, for example, then it’s better to get a 60 CFM fan for better results. Secondly, if you have separated rooms or a jetted tub in your bathroom, you might need more than one of these best bathroom exhaust fan with humidity sensor.

The minimum CFM fan size is 50 CFM. So if your bathroom is just 42 square feet, you will have to buy a 50 CFM exhaust fan.

Bathroom Dehumidifier VS Exhaust Fan

Is the air in your bathroom too muggy? Do you have excess moisture in your bathroom? If yes, then you have two options to choose from: a dehumidifier or an exhaust fan. But how do you figure out which one is the best?

To help you out, I have laid down a brief comparison of bathroom dehumidifier vs exhaust fan.

A dehumidifier is a convenient option as it efficiently reduces humidity levels. It pulls out moisture in the air and releases it back as dry and fresh air, without any water content. Also, a bathroom dehumidifier is more durable.

As far as an exhaust fan is concerned, it circulates the air through the bathroom and helps improve ventilation. But it does not do much to maintain the humidity levels. So, the major difference between the two is the mode of operation. The mechanism used by both the appliances is different from each other.

Many of you want to know if a dehumidifier can replace the exhaust fan in the bathroom. The short answer is yes! If the exhaust fan is not enough to control the humidity levels, then you should replace it with a dehumidifier.

Here are some of the appliances that you can use to reduce humidity levels in your bathroom:

  • Exhaust fans
  • Dehumidifier
  • Air conditioner

After this bathroom dehumidifier vs exhaust fan comparison, it should be easier for you to decide which one to get.

If you have persistent moisture in your bathroom, then a dehumidifier would be a great option. But if you experience humidity for short periods, then an exhaust fan will do.


How do humidity sensing bathroom fans work?

Bathroom exhaust fans with humidity sensors help remove excess moisture from the air and thus, prevent damage to ceilings and walls.

Plus, it prevents the growth of mold and mildew in your bathroom. Humidity sensing fans are equipped with a sensor that activates the fan when the humidity rises and automatically turns it off after a set period.

Is it bad to oversize a bathroom exhaust fan?

Bathroom exhaust fans are rated in CFM or cubic feet per minute. It measures the amount of air a fan can move per minute.

Therefore, it is always a good idea to oversize the fan slightly. If you have a 54-square-foot bathroom, then you should go for a 60 CFM fan for good measure.

Does a bathroom fan help with smell?

The main purpose of a bathroom exhaust fan is to remove excess moisture. Besides, they also help to control and eliminate bathroom odors.

They reduce health issues by reducing fumes from cleaning agents.

How long should you run the bathroom fan after a shower?

According to the Home Ventilation Institute (HVI), you should run a bathroom exhaust fan for at least 20 minutes after using the shower. This will ensure proper ventilation in the bathroom.

What humidity should my bathroom fan be set at?

Unless you have special humidity conditions in your bathroom, you should set the humidistat on 60%.

What does humidistat mean?

A humidistat refers to a device or machine that automatically regulates the humidity of the air in a room, bathroom, or building.


By installing the best bathroom exhaust fan with a humidity sensor, you can create an ideal environment in your bathroom.

It will eliminate the excess humidity and keep your bathroom protected from damage and mold growth.

The best thing about these fans is that they can automatically turn on and off. It gets activated when moisture is detected and turns off when the humidity level is maintained.

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