7 Best Humidity Sensing Bathroom Exhaust Fans In 2024

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After a hot shower, your bathroom can get quite humid and moist. So, we have compiled a list of the best humidity-sensing bathroom fans to keep your bathroom cool and dry. These fans work as a thermostat, but they depend on the relative humidity levels instead of the room temperature. They automatically detect high humidity levels and turn on until the moisture level goes down considerably.

With several features and designs, you can browse through the tried-and-tested products to choose the right one for your bathroom.

Safety Precautions While Using Humidity Sensing Bathroom Fans

Below are some safety precautions to keep in mind while using bathroom exhaust fans with humidity sensors.

  • Adjust the fan blower based on the desired levels of humidity. Experiment with various humidity levels to know the right adjustments for your bathroom
  • Follow the installation instructions carefully to reduce any error
  • Clean and maintain the fan regularly for proper ventilation
  • Turn off the power while cleaning the unit
  • Do not install a humidity sensor bath fan in a thermally insulated ceiling

7 Best Humidity Sensing Bathroom Fans

1. Best Airflow:Hauslane Humidity And Motion Sensor Electric Fan

Hauslane Humidity And Motion Sensor Electric Fan Image: Hauslane

The Hauslane built-in sensors will regulate the humidity levels in your bathroom. Its small electric fan provides powerful ventilation using suction and removes bad odors from rooms of a size up to 120sq. ft. It uses 1007 RPM fan speed and includes a double hanger bar for ideal positioning between ceiling joists.

Item Weight: 8.93 pounds | Product Dimensions: 10 x 10 x 8 inches | Wattage: 6 watts


  • Easy to install
  • Six-watt LED panel provides illumination
  • Backed with a limited two-year guarantee
  • Powerful airflow


  • Noise levels may be high

Our Reviewer's Experience

"The included brackets came in handy while putting up this fan. Although made of steel, I would recommend keeping water away from it to prevent rusting. Nevertheless, it also functions quietly, and the LED light is a boon for nighttime use."

protip_icon Remember
The majority of bathroom exhaust fans with humidity sensors are designed to operate only when turned on prior to taking a shower.

2. Best Energy-Efficient:Delta BreezSignature VBF25AEH Exhaust Bath Fan

Why We Think It's Worth Buying

This product has received 672 reviews from customers on Amazon, indicating its popularity and reliability.

BreezSignature’s bathroom fan has an automatic humidity-sensing mode and a virtually silent operation. This tried-and-tested option has a LED indicator light that assures the fan is running. Engineered using DC brushless motor technology makes it a highly durable humidity extractor fan with the effective cost-saving operation. To find out more about this trusted product, check out this video review.

Product Dimensions: 9.7"D x 9.7"W x 8"H | Color: White | Item Weight: ‎9.81 pounds | Wattage: ‎19.1 watts | Material: ‎Alloy Steel


  • Energy Star-qualified design
  • Includes a three-year warranty
  • Low noise levels of 2.0 sones
  • Consumes lesser energy
  • HVI-certified


  • Does not shut off

Our Reviewer's Experience

"This fan activates quickly when it senses humidity. Also, the noise level is surprisingly low. Installation was a bit tricky, requiring some improvisation. However, it is energy efficient and works well."

3. Best Easy-To-Install:Panasonic FV-0511VQC1 WhisperSense DC Ventilation Fan

Designed to remove moisture and unhealthy air from your home, this high-quality WhisperSense exhaust fan comes with an automatic humidity sensor. The bathroom ventilation fan has been through rigorous performance and quality tests, and it features a four- or six-inch built-in duct adaptor that offers flexibility in the layout. The reliable product includes Flex-Z fast brackets for quick and easy installation, and it provides quiet operation and powerful ventilation. If you are an absolute beginner, this video might be useful.

Color: White | Product Dimensions: 13 x 13 x 7.38 inches | Weight: 9.48 Pounds


  • Removes contaminated air
  • Energy Star-certified
  • Adjustable airflow
  • Complies with the latest standards and codes


  • May not allow disabling motion sensor

Our Reviewer's Experience

"Installing this vent fan was straightforward, and its functioning is also primarily noiseless. Its adjustable speed and motion sensor add convenience, but the latter can sometimes be too sensitive. Still, it is very efficient and keeps my bathroom humidity-free."

Hauslane Humidity And Motion Sensor Electric Fan
Best Airflow
Delta BreezSignature VBF25AEH Exhaust Bath Fan
Best Energy-Efficient
Panasonic FV-0511VQC1 WhisperSense DC Ventilation Fan
Best Easy-To-Install
Weight 8.93 pounds ‎9.81 pounds-
Dimensions 10 x 10 x 8 inches 9.7"D x 9.7"W x 8"H 13 x 13 x 7.38 inches
Wattage 6 watts ‎19.1 watts-
Color- White White
Material- ‎Alloy Steel-
Weight-- 9.48 Pounds

4. Best Corrosion-Resistant Design:Homeworks Worldwide Humidity Sensor Exhaust Ventilation

The bathroom exhaust fan with a humidity and moisture sensor is effective in removing moisture and harsh odor from your bathroom. Designed to control humidity in bathrooms of area up to 80sq. ft, the bathroom vent fan also features a 15W LED that senses motion and automatically turns on and off.

Item Weight: 8.8 Pounds | Wattage: 15 watts | Material: Galvenized Steel | Product Dimensions: 10.2"D x 10.2"W x 7"H | Color: Smart Motion White


  • Corrosion-resistant
  • Contemporary design
  • Easy to install
  • Includes a three-year warranty
  • Noiseless with LED touchpad for convenient control


  • Sensors may not be effective

Our Reviewer's Experience

"While this bathroom fan generally meets my expectations, the design could be more installation-friendly. However, it offers adequate lighting, and motion detection is handy. Overall, it is a reliable unit for ventilation."

5. Best For Removing Odor:ESD Tech Bathroom Exhaust Fan

ESD Tech Bathroom Exhaust Fan

Featuring an extremely low noise level of 0.7 sones, this is one of the most powerful humidity sensing exhaust fans with a four-inch duct. As per reviews, it ensures mildew prevention and reduces bad odor, keeping your bathroom free from any buildups. This is a wise and affordable choice for a bathroom of size up to 85sq. ft and includes four hanger bars for flexible installation.

Item Weight: 11.08 pounds | Material: Alloy Steel | Color: White


  • HVI- and Title 24-certified
  • Includes a one-year warranty
  • Energy Star-listed
  • Convenient to install
  • Offers airflow of 90 CFM
  • Safety-tested, ETL-certified


  • LED light may not be of good quality

Our Reviewer's Experience

"Adding this exhaust fan to my bathroom has helped me deal with damp walls and floors. It operates quietly and prevents mirror fog-up after hot showers. However, it doesn't shut off automatically at my desired humidity level, which is a minor hiccup. Still, it is worth considering."

protip_icon Quick tip
It is recommended to verify the CFM (cubic feet per minute) rating of your humidity-sensing exhaust fan, as this value specifies the amount of air it can circulate per minute.

6. Best With Delay Timer:Kaze Appliance SEP120H Humidity Sensing Exhaust Fan


The SEP120H exhaust fan by Kaze Appliance has an airflow rate of 120CFM and comes equipped with a condensation sensor that automatically turns it on or off. In addition, the quiet bathroom fan features a delay timer that allows it to continue functioning for five to thirty minutes even after achieving the ideal humidity levels. Made of high-quality materials and permanently lubricated motors, this exhaust ensures trouble-free operation.

Item Weight: 11.73 pounds | Wattage: 33 watts | Material: Metal | Product Dimensions: 11.38"D x 10.5"W x 7.63"H | Color: White


  • Easy to install
  • Includes duct reducer
  • Rust-resistant
  • Suitable for larger bathrooms
  • Universal compatibility


  • Fan might rattle at times
Our Reviewer's Experience

"I had to get professional help to install this fan, but the way it clears steam from my bathroom has been remarkable. Moreover, the hands-free operation is a boon, and the low-noise motor makes me forget if it's even on."

7. Best Motor:Broan-NuToneRoomside Humidity Sensing Exhaust Fan

*The prices provided in this article are based on the latest available information. However, they may vary due to changes in pricing by the seller and/or promotional offers.

Enjoy fresh air every day with the Broan-NuTone. It offers a high-quality humidity-controlled exhaust fan effective for rooms of a size up to 105sq. ft. It comes with a unique automatic moisture control technique and offers effective mildew or mold prevention in bathrooms. This humidity sensing fan is integrated with a LED lightthat promises long-lasting illumination. It features a powerful motor engineered for uninterrupted operations.

Material: Alloy Steel | Color: White | Item Weight: ‎14.25 pounds | Number of Items: ‎1 |Shape: ‎Round | Shade Material: ‎Alloy Steel | Product Dimensions: ‎15"L x 15"W x 8"H | Material: ‎Alloy Steel | Color: ‎White


  • Sturdy design
  • Made of galvanized stainless steel
  • Quick-to-remove moisture
  • Includes a three-year warranty
  • Energy Star-certified


  • May be noisy

My Personal Experience

"The best part about this fan is the low-profile design, as it seamlessly blends into my washroom's decor. Its humidity sensor was a bit finicky initially, but some tweaking fixed that issue. All in all, it's been the perfect find to remove excess moisture from my home."

protip_icon Quick Fact
Selecting an exhaust fan that has a minimum capacity of 1 CFM (cubic feet per minute) per square foot of bathroom area is recommended to ensure sufficient ventilation.

How To Choose The Right Humidity Sensing Bathroom Exhaust Fan?

Humidity-sensing fans are essential to regulate humidity levels. To ensure the safety and ideal operation of the fan consider the below points while buying a humidity-sensing fan

  1. Installation: Choose a fan that is easy to install and includes detailed instructions you can follow. These fans come with the necessary tools for convenient installation.
  2. Design: Ensure the fan is made of high-quality, durable material for long-lasting, optimal performance. It should provide strong suction power, good ventilation, and a low noise level. The humidity sensor should be accurate. Choose an Energy Star-qualified design to ensure energy efficiency.
  3. Size: Consider your bathroom space to find a suitable size. Fans with a compact design allow better ventilation without blocking space. Determine how much suction power and motor power is required to choose a fan size accordingly.
  4. Ease of use: Choose humidity-sensing fans with an automatic on-off function, LED indicator, convenient controls, and other additional features for smooth functioning. They should be easy to clean and maintain for long-term use.

Features To Consider While Buying A Humidity Sensing Bathroom Fan

Here are some factors that you must consider to choose the best humidity-sensing bathroom fan.

  1. Energy usage: Choose Energy Star-certified fans as they promise good efficiency and save your electricity bill.
  2. Noise levels: The noise levels are measured in sones. The lower the count of sones, the quieter the fan is. Look for bathroom fans with low values of sones to have low noise levels.
  3. Bathroom size: Keep in mind the bathroom’s size to buy a humidity sensing fan that offers good performance. Buying a small fan might not deliver the desired performance and buying a powerful fan will lead to energy wastage.
  4. Ease of installation: Look for exhaust fans that are convenient to install. Be aware of the complications of installing it in your bathroom before buying one.

Frequently Asked Questions

1. How do I use a bathroom exhaust fan with a humidity sensor?

Humidity sensor-enabled bathroom exhaust fans work on electricity. You just have to leave the power on. As soon as the sensors situated in the fan detect an increase in humidity level, they trigger the fan to switch on automatically.

2. What are the benefits of bathroom fans with humidity sensors?

Bathroom fans with built-in humidity sensors are time-tested devices to keep the bathrooms dry and moisture-free, especially if they are not well-ventilated. This in turn helps prevent mold buildup and keeps foul smells at bay.

3. How do I replace a bathroom exhaust fan?

Here are the general steps involved in replacing a bathroom exhaust fan:

  • Cut the power supply to the fan
  • Remove the current fan’s cover, disconnect the wires, detach the fan from the vent pipe, and unscrew the fan housing in order to remove it
  • Resize the vent hole as per the new fan if needed
  • Connect the new fan’s duct connector to the vent’s pipe and ceiling
  • Connect the new fan’s wires to that of the house as per the instructions provided by the manufacturer
  • Screw the brackets of the new fan to the vent’s joists
  • Secure the fan’s cover via the metal clips (1)

4. How do I clean a bathroom exhaust fan?

First, cut the power supply. Then, remove the fan’s cover and give it a good scrub with soapy water and a bristle brush and let it dry thoroughly. Remove the fan’s motor as per the instructions given by the manufacturer. Followed by that, remove as much dust as possible from the fan’s blades and fan box with a cloth. Finally, clean the blades using a wet (but not dripping) sponge and let the interiors dry completely.

5. Why does my bathroom exhaust fan make noise when off?

The bathroom exhaust fan may make noise when off due to faulty wiring, damaged backdraft, invasion of the vent by animals or insects, or broken components.

6. How do I size a bathroom exhaust fan?

While selecting a bathroom exhaust fan, keep in mind the duct’s size. Most 50 CFM fans fit well in a four-inch round duct. Fans with higher CFMs might be more compatible with ducts that measure five to six inches.

7. What CFM do I need for a bathroom fan?

The CFM required would depend on your bathroom size. The general rule is that you need a minimum of one CFM per square foot of your bathroom.

Why Trust MomJunction?

If you are worried about your bathroom turning humid after a shower, you could consider installing a humidity-sensing bathroom fan. If you are not quite sure about this product, we have curated exclusive details and important safety measures to note before you plan to buy a humidity-sensing bathroom fan. These consumer-tested products have been selected after reviewing and comparing various options and user reviews.

The Bottom Line

Keeping your washroom cool and odor-free becomes easy with a humidity-sensing bathroom fan that can remove excess moisture and unhealthy air. When buying one, you must consider factors such as easy installation, corrosion resistance, automatic turn-off function, and low noise to make the right choice. Also, you should consider the star ratings and certifications as an assurance of quality. Thus, our top recommendations are the Delta BreezSignature VBF25AEH Exhaust Bath Fan, a high-quality HVI-certified fan with low noise and LED indicator, and the Kaze Appliance SEP120H Humidity Sensing Exhaust Fan with an auto on-off feature and universal compatibility. We hope our list of the best humidity-sensing bathroom fans can help you understand your requirements to find a suitable option.

Infographic: Safety Tips To Follow When Using A Humidity Sensing Bathroom Fan

Humidity-sensing bathroom fans help control the moisture level in the bathroom. They help keep your bathroom dry and give your exhaust fan a break. However, properly using and cleaning the fan is crucial to extend its durability and efficiency. Check out the following infographic to learn about the basic rules of using these fans.

Guidelines To Follow When Using A Humidity Sensing Bathroom Fan (infographic)

Illustration: The Bridal Box Design Team


  1. How To Replace And Install A Bathroom Exhaust Fan:

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