10 Best Humidity Sensor Bath Fans

Humidity Sensor Bath Fan

Humidity sensor bath fans are an excellent way to extract moisture automatically, particularly in homes with forgetful residents. When the humidity in your bathroom hits a certain amount, a bathroom exhaust fan with a humidity sensor will automatically turn on. The vent fan will continue to work until the moisture level falls below a certain threshold. It works the same way your home’s thermostat does, except it uses relative humidity instead of temperature.

The humidity sensor is an electrical instrument that detects moisture in the air and reacts accordingly. It is used in conjunction with a simple thermometer to provide a precise relative humidity reading. Some bathroom fans allow you to control the relative humidity percentage at which the fan turns on, which is usually between 25% and 75 percent. These fans are ideal if you don’t want to bother about remembering to turn it on or have family members or landlords that you suspect are not aware of the importance of turning on the exhaust fan after showering.

Many people are unaware of how excessive moisture can cause harm to a bathroom and poor air quality. Additionally, using a fan with a humidity sensor will help avoid a fire threat. When occupants have a bath fan on all the time, the fan becomes more vulnerable to heat buildup and may catch fire at any time. There are a few things to consider when looking for the right bathroom exhaust fan with a humidity sensor.

Sensor Humidity Adjustments:

It is one of the most important and perfect factors to remember for these fans. You can’t choose the humidity setting on all exhaust fans. Adjustable fans usually have a knob inside the fan housing to set the relative humidity to somewhere between 25% and 75%.

Fan Speed (Fixed or Adjustable):

You can also monitor the fan speed measured by CFM for sure ventilation fans. The Panasonic WhisperSense has a switch on the inside that allows you to pick either 50, 80, or 100 CFM. The majority of bath fans will have a high and low-speed setting. For instance, in high-speed mode, you might want the fan to run at 80 CFM, while in low-speed mode, you might want it to run at 6 CFM.

Since certain fans have set speeds, make sure to review the product specifications to see if this is a choice for you.

Bathroom Dimensions:

The size of your bathroom is crucial since it will decide how powerful of a fan you buy.

Suppose you buy a bathroom fan that is too strong. In that case, you can waste energy and cause negative air pressure in the household, potentially affecting other home appliances like the refrigerator, fireplace, and water heater. If you buy a poor fan, it will not vent enough air, resulting in bathroom moisture damage and mold formation.

Choosing Fan Power:

This statistic essentially indicates how much air the fan will remove in one minute. As a general rule, measure your bathroom floor and add 1 CFM per 1 square foot of floor space when sizing your fan. E.g., if your bathroom floor is 80 square feet, you’ll need a bathroom fan with at least 80 CFM. If your bathroom is more significant than 100 square feet, you can start applying CFMs depending on how many fixtures you have.

Housing Dimensions:

The housing size refers to the exhaust fan’s metal or plastic container, not the removable cover or grill, which is usually bigger. The housing is the part of the fan that would screw to the joists of your ceiling.

It’s a brilliant idea to measure the size of your current home before making a purchase. If the fan is too small to fit between the joists, you should still apply wood blocking. However, if the fan is too big, you’ll have to break the beams, which is usually a terrible idea. It’s also a perfect way to double-check that the ceiling cavity has sufficiently vertical space.

Levels of Noise:

A ventilation fan’s noise level is estimated in sones, a basic unit of measurement for loudness. A bathroom fan with a noise level of 1.5 sones or less is considered silent, and something with a noise level of less than one sone is considered exceptionally quiet. The underlying principle is that doubling the sones doubles the noise frequency.

Some residents may choose a marginally quieter fan because it creates “white noise” and provides some privacy. Others can need a whisper-quiet fan for several reasons, such as not disturbing a sleeping infant.

10 Best Humidity Sensor Bath Fans

My picks for the best bathroom exhaust fans with humidity sensors are listed below. Depending on the amount of moisture in the shower, these humidity-sensing fans will switch on and off. Go reading to see the rest of my reviews.

Panasonic FV-0511VQC1 WhisperSense DC Ventilation Fan


Panasonic FV-0511VQC1 WhisperSense DC Ventilation Fan

You’ll have a hard time hearing this Panasonic because it’s so dark. However, it works at a decibel level of 0.3, which is quieter than rustling leaves.  It comes with a Pick-a-Flow speed slider that lets you switch from 50, 80, or 110 CFM, depending on the situation. It also includes a Flex-Z simple bracket for attaching four or 6-inch ducting.

It’s Energy Star score, which means it’ll save you money on energy bills, and it has a low profile, which means it’ll almost flush with the ceiling. We applaud you if you can find a louder exhaust fan. Unfortunately, it’s difficult to tell how this model is working because it’s barely audible.

Connecting the ducting takes less time than you expect, thanks to the Flex-Z bracket. It can also fit ductwork with a diameter of 4 or 6 inches. In addition, you have more flexibility and mobility to appeal to light or heavy bathroom use by adjusting the CFM level. It also aids in the prevention of odors and mildew. This Panasonic exhaust fan is not for the faint of heart. It is significantly more costly than the other models on the list. It is, however, silent and works admirably.

  • So Silent
  • Installation is easy.
  • Expensive


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

AC Infinity AIRLIFT T10, Shutter Exhaust Fan


AC Infinity AIRLIFT T10, Shutter Exhaust Fan

The exhaust fan’s optimal position is often in the wall. If you don’t have access to a ceiling fan because you live in an apartment, a wall-mounted fan will suffice. This AC Infinity model is compelling, and it comes equipped with an intelligent programming feature that allows you to control the humidity levels.

You’ll also get correct moisture and temperature readings, as well as a 40% electricity cost reduction. You can also adjust the rpm, set a timer, and set the alarm. Since the dual-ball bearings are suitable for 67,000 hours, this device can last for years.

This model has galvanized steel shutters, aluminum fan blades, and dual-ball bearings with a 67,000-hour helpful life. Since it connects to ducting in the roof rather than a hole in the wall, installing this fan is a breeze. In addition, it is simple to use.

To get the exact extraction output you like, program the timer, humidity settings, and speed control. You will customize it to meet the needs of your family. This fan has a decibel rating of 58, which means that it is louder than average ceiling exhaust fans while it isn’t very noisy. If you buy one, keep this in thought because it can wake up the family in the middle of the night.

  • Programmable
  • long-lasting construction
  • Noise is a disadvantage.


AC Infinity AIRLIFT T10, Shutter Exhaust Fan 10" with Temperature Humidity...
  • A high-airflow exhaust fan designed to ventilate out heat, moisture, odor, and dust from various spaces.
  • Programmable controller with corded probe, can adjust fan speeds in response to temperatures and humidity.
  • Innovative EC-motor with PWM-control maximizes airflow while reducing energy consumption and noise levels.
  • Features steel shutters, aluminum blades, and IP-44 rated to be highly resistant to liquid and dust.
  • Fan Size: 10” | Dimensions: 13.0 x 13.0 x 5.9 in. | Airflow: 631 CFM | Noise: 67 dBA | Bearings: Dual Ball

Delta BreezSmart SMT130H 130 CFM Exhaust Bath Fan


Delta BreezSmart SMT130H 130 CFM Exhaust Bath Fan

This fan will make you happy if you like having control of the humidity levels. You can set the levels anywhere between -50 and +90 percent. Who, without a doubt, encompasses all eventualities. The fan runs at 130 CFM when the moisture levels reach the highest fixed point. When the levels decrease, the fan slows down to a 50, 70, or 90 CFM speed.

It produces 0.3 sones, which puts it on par with the Panasonic in terms of volume, and it uses less than 17 watts of power thanks to its Energy Star rating. In addition, this model allows you to adjust the humidity levels over a wide range of temperatures, from -50 to +90 degrees. That covers all types of bathroom use and climates.

To the human ear, the volume generated by this fan is scarcely audible. It emits just 0.3 decibels, making it louder than rustling leaves.

This fan uses just 17 watts of fuel, making it extremely energy efficient. That is why it has earned the Energy Star designation. Your electricity bills will be down by up to 67 percent, and This fan is not inexpensive. You would pay twice as much as the others on the list. It is, however, a high-quality exhaust fan that comes highly recommended.

  • Energy Star
  • Super Quiet
  • Expensive


Delta BreezSmart SMT130H 130 CFM Exhaust Bath Fan with Adjustable Humidity...
  • An indicator light underneath the grille assures you that this quiet fan is running
  • Adjustable humidity set points between ~50% to ~90% RH
  • When humidity is above the user-adjustable set-point, fan runs at full speed (130 CFM). When humidity is below the set-point, the fan runs continuously at a pre-set lower level (0, 50, 70 or 90 CFM)
  • ENERGY STAR Most Efficient for efficient cost-saving operation

Homewerks Worldwide 7146-80-MS Bathroom Fan Humidity Sensor Exhaust


Homewerks Worldwide 7146-80-MS Bathroom Fan Humidity Sensor Exhaust

This exhaust fan has a humidity monitor and a calming LED light that can be dimmed to help set the mood in the bathroom. It’s a single-speed fan, meaning it only moves 80 CFM but is very silent at 1.5 decibels. It would help if you switched the humidity sensor to auto-on, which means it will turn on when the fan senses dampness in the air and turn off when the humidity level falls below 60%. The light is also motion-activated, so it turns on automatically as you step into the room. If you have children, this is a huge plus.

You also get an LED wall switch that gives you complete control over the features, including the ability to turn off the auto-humidity sensor if desired. Using the motion sensor light instead of turning on the bathroom light is a super convenient way to light the room. This feature would appeal to both children and elderly relatives.

The LED control panel lets you choose the settings that better fit your bathroom use. For example, you can choose between manual and automatic humidity detection.

This fan works best in bathrooms that are less than 80 square feet. The 24-watt motor produces enough power to run the lamp, fan, and humidity sensor simultaneously. The fact that it only has one speed is disappointing for such a sophisticated fan. However, it ensures that you still run at the limit of 80 CFM no matter what the humidity level is.

  • 24-Watt Motor
  • Multi-Functional Control Switch
  • Just one speed


Homewerks 7146-80-MS Bathroom Fan Integrated Dimmable LED Light Humidity Sensor...
  • OUTSTANDING PERFORMANCE: This Homewerks bath fan with LED Light motion sensor ensures comfort in your home by quietly eliminating moisture and humidity in the bathroom. This exhaust fan is 1.5 sones...
  • BATH FANS HELPS REMOVE HARSH ODOR: When cleaning the bathroom or toilet, harsh chemicals are used and they can leave an obnoxious odor behind. Homewerk’s bathroom fans can help remove this odor with...
  • DESIGN AND FEATURES: Designed to be corrosion resistant with its galvanized steel construction featuring motion sensing 15 Watt LED Light that automatically turn on and off and adjusts between light...
  • EASY INSTALLATION: This exhaust bath fan is easy to install with its no-cut design and ceiling mount ventilation. Ceiling Opening (L) 7-3/4 in x (W) 7-1/2 x (H) 7-5/16 in. Housing Dimensions: (L)...
  • HOMEWERKS TRUSTED QUALITY: Be confident in the quality and construction of each and every one of our products. We ensure that all of our products are produced and certified to regional, national and...

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Delta BreezSlim SLM70H 13.1W Exhaust Bath Fan with Humidity Sensor


Delta BreezSlim SLM70H 13.1W Exhaust Bath Fan with Humidity Sensor

We’ve arrived at the budgetary end of the continuum. This exhaust fan is far less expensive than the market, making it an excellent starting fan. In addition, it has a humidity sensor that turns on when the humidity level in the air exceeds 60% and turns off when it falls below that level.

It runs at 2.0 decibels, so it isn’t the quietest, but what do you expect for the price? In addition, this model is certified for both wall and ceiling mounting, giving you more options, and the Energy Star-rated motor is brushless, saving you money.

Brushless motors are the most recent concept, and they save you money by increasing the fan’s energy efficiency. It also improves reliability since there are no brushes on the engine. Unfortunately, meetings have a bad reputation for having to be replaced every few years.

It’s a win-win situation in terms of pricing and operating costs. Also, this fan is far louder than the ones on the chart. Given the price, it’s understandable, but it’s something to keep in mind when making your order.

  • Affordable
  • Fan energy Efficiency
  • The operation is very loud.


Delta BreezSlim SLM70H 13.1W Exhaust Bath Fan with Humidity Sensor
  • Energy Star qualified with innovative brushless DC motor technology
  • In humidity sensing mode, the Fan will start when humidity is above 60%, and will stop when humidity is below 60% automatically
  • UL approved for Ceiling or wall mount installation, the only 7.5 inch x 7.25 inch small size bath Fan in the market
  • Compact housing for easy retrofit and replacement of older bath fans, quiet operation at 2.0 sones
  • Energy efficiency rating approximately 5.8 CFM/watt, blue and Amber LED indicator light to show humidity sensor and full speed modes

Delta Electronics (Americas) BreezSignature Humidity sensor fan


Delta Electronics (Americas) BreezSignature Humidity sensor fan

You can’t go wrong with the BreezSignature by Delta if you want to monitor humidity in your bathroom automatically. This bathroom fan is available in three different sizes: 80cfm, 110cfm, and 130cfm (all have humidity sensors). This fan is quiet and built to last, thanks to its DC z engine. Delta is a well-known and well-respected bath fan maker.

  • Automatic humidity sensors are available in 80cfm, 110cfm, and 130cfm versions (all with humidity sensors)
  • Brushless DC motor with a long life span
  • Manufacturer of high quality
  • There isn’t a flexible installation bracket included.
  • It is built to fit 4″ and 6″ ducting.


Delta Electronics (Americas) Ltd. VFB25AEH BreezSignature Humidity Sensor Fan,...
  • 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

Delta BreezGreenBuilder GBR80H 80 CFM Exhaust Bath Fan


Delta BreezGreenBuilder GBR80H 80 CFM Exhaust Bath Fan

Here’s our top choice for a budget-friendly bathroom fan from Delta, which has a built-in humidity sensor. This fan has a dual-speed fan and a humidity sensor that can be adjusted from 50% to 80%, allowing you to monitor the moisture to your liking. This device is also very energy-efficient, consuming just 9.7 watts at high power.

Delta Breez has a wide range of high-quality, high-performance bathroom ventilation fans in various sizes, airflow speeds, and features to fit any budget. In addition, Delta Breez fans are engineered to monitor and minimize moisture in your house, resulting in better indoor air quality and a lower chance of health issues.

All Delta Breez fans are ENERGY STAR certified and ‘quiet as a wind,’ which ensures they meet the EPA’s stringent energy quality requirements and help to minimize greenhouse gas emissions. Reduced emissions tend to protect the atmosphere, which allows you. In addition, low oil demand cuts utility costs.

  • The Humidity is adjusted from 50% to 80%.
  • If required, the fan will operate continuously below the humidity set point.
  • It is HVI and Energy Star accredited.
  • The noise level is moderate.


Delta BreezGreenBuilder GBR80H 80 CFM Exhaust Bath Fan with Adjustable Humidity...
  • Quiet operation at 0.8 sones
  • An indicator light underneath the grille assures you that this quiet fan is running
  • Adjustable humidity set points between ~50% to ~80% RH
  • When humidity is above the user-adjustable set-point, fan runs at full speed (80 CFM). When humidity is below the set-point, the fan runs continuously at a pre-set lower level (0 or 50 CFM)
  • ENERGY STAR Most Efficient for efficient cost-saving operation

Broan-Nutone QTXE110S Ultra-Silent Humidity-Sensing Ventilation Fan


Broan-Nutone QTXE110S Ultra-Silent Humidity-Sensing Ventilation Fan

The Broan-Nutone bath fan is a decent value-for-money device that turns on automatically as the humidity level rises. Unfortunately, the humidity sensor isn’t customizable, but there is a fan timer, that is. It is very silent, with a decibel level of less than one, and it has a CFM rating of 110, which is adequate for most bathrooms.

Broan has the most comprehensive range of ventilation fans in the market. Broan delivers elegant solutions to suit any case, whether it’s the new high-performance, Energy Star-certified approach to today’s green building standards or ultra-quiet service for a relaxed setting.

Broan is dedicated to creating ground-breaking goods that enhance the indoor atmosphere while also incorporating procedures to protect the outdoors. As a result, they are best in their ability to meet the requirements.

Broan Sensaire technology is a hands-free way to combat excess Humidity and potential mold issues. It senses sudden fluctuations in moisture levels above the roof, where steam and Humidity typically rise and automatically switch on the fan. Broan included automated shutoff with a fan this quiet to save you time and money. Broan Sensaire technology is ideal for high-traffic toilets, children’s bathrooms, or anybody who leaves the house without adequately venting the Humidity.

  • Low-cost bath fan with humidity monitor.
  • At 0.7 sone and 110 CFM, it’s silent (strong enough for most bathrooms)
  • Goods of lower quality
  • This product isn’t solely for retrofit installation.


Broan-Nutone QTXE110S Ultra-Silent Ventilation Fan, Exhaust Fan for Bathroom and...
  • 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

Read also: Buyers Guide for Towels

Broan-NuTone 688 Ceiling and Wall Ventilation Fan


Broan-NuTone 688 Ceiling and Wall Ventilation Fan

Boost ventilation and eliminate odors without breaking the bank on a pricey bathroom exhaust fan. Broan allows a cost-effective and efficient bathroom exhaust fan that is a smart choice for budget-conscious homeowners.

The Broan 688 has a 50 CFM rating and is ideally suited for compact bathrooms of less than 50 square feet. In addition, it receives high marks in reviews for being particularly simple to build and installed on the ceiling or the wall. On the other hand, the relatively restricted CFM may not be the perfect match for bathrooms that need severe moisture control.

This low-cost bathroom exhaust fan has a noise level of about 4.0 sones, which is significantly higher than other models. The elevated noise level could be a good fit for providing bathroom privacy for specific users. In the end, this bathroom exhaust fan is ideal for limited bathrooms and tight budgets.

  • Increase Circulation
  • Reasonable Cost
  • None


Broan-NuTone 688 Ceiling and Wall Ventilation, 50 CFM 4.0 Sones, White Bath Fan
  • VERSATILE FAN: Ventilation fan helps eliminate humidity, tobacco smoke, and cooking odors. Install the compact fan between ceiling joists or wall studs - wherever it's needed most!
  • EFFICIENT: Operates on 50 CFM and has a 4. 0 Sone rating to ensure a peaceful surrounding when in operation
  • EASY INSTALLATION: Torsion springs grille mounting - no tools necessary for a quick and easy installation
  • DECORATIVE: Paintable polymeric grilles allow you to ensure the fan is cohesive with your existing decor
  • FEATURES: Plug-in, permanently lubricated motor with the Broan-designed polymeric blower wheel for high-quality operation every time. Motor snaps in and out for easy cleaning - no screws required....

ESD Tech Quiet Bathroom Exhaust Fan Adjustable Humidity Sensor


ESD Tech Quiet Bathroom Exhaust Fan Adjustable Humidity Sensor

After showering or swimming, bathroom exhaust fans suck the moisture from the air to protect your floors and walls. However, mold or bacteria may thrive in an environment of too much water. The noise level of the humidity sensor (measured in sones) and the number of square feet the fan will safely cover are the two most important things to remember when buying a bathroom exhaust fan (measured in CFM). The fan will be louder if the number of sones is reduced. The bigger space it will cover, the greater the CFM. Be sure that the space coverage of any exhaust fan you buy is adequate for the size of your bathroom before you buy it.

The exhaust fans in our bathrooms are very silent. You won’t find a similar fan for the same price that measures 0.4 to 0.8 sones and covers 90 CFM. This fan also has a built-in humidity sensor that can turn the fan on and off automatically based on the humidity levels in the room. Our fans have all of the necessary safety certifications to pass any mandatory inspections.

Save still more money by making the fan switch on and off automatically based on the humidity levels in the room using intelligent sensor technologies. To decide when the fan shuts off, adjust the relative humidity (RH) levels to 50 percent, 75 percent, 85 percent, or 100 percent humidity. After the Humidity has been drained, the timer is set to hold the fan running for 5 to 60 minutes.

With our bathroom exhaust fans, you will enjoy the quiet silence. If you’re working for a 6 “, The noise level in the duct is 0.4 sones. However, if you want to use the four options, “By using a vent converter, the noise level rises to just 0.8 sones.

The airflow generated by this fan is enormous, at 90 cubic feet per minute, despite the superficial noise level (CFM). It will save 85 square feet of bathroom space! Each of our fans has undergone extensive testing for both protection and energy consumption.

  • Noise isn’t that bad.
  • Humidity sensor built-in
  • None


Final Thoughts:

Humidity-sensing exhaust fans are the most convenient and hassle-free way to remove moisture. You don’t have to wonder about it or be concerned that you’ve got the fan running all day because it’s ideal for little children. It’s as if you have an all-seeing eye looking over your toilet, turning on and off the fan as appropriate, so you don’t have to.

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