Top 3 Best Panasonic Bathroom Fans With Humidity Sensor (2023 Review)

Do you want to know what are the best Panasonic bathroom fans with humidity sensors?

Panasonic is world renowned for their high quality electronic products, and their bathroom exhaust fans are no exception.

In this product review, I will go over...

  • My #1 top pick for the best Panasonic bathroom fan with humidity sensor
  • Why Panasonic makes such great vent fans (such as SmartFlow tech)
  • How to pick the best Panasonic fan for your bathroom

Let's get started with this guide!

panasonic bathroom fan with humidity sensor

Our Overall #1 Rated Pick

  • Comes with humidity sensor (and motion sensor) for automatic on and off
  • Flip a switch and choose your own vent fan speed (50, 80, or 110 CFM)
  • Ultra quiet at less than 0.3 sone
  • Easy install bracket included
  • 30-sec to 1-hour adjustable delay timer included

My overall top pick for the best Panasonic bathroom fan with humidity is the WhisperSense With Light. This exhaust fan will automatically turn on and off based on your humidity level. Besides this awesome feature, it also doubles as a light fixture for more bathroom illumination. The ECM smart motor will automatically adjust its speed to match your desired CFM even with weird duct runs.

Top 3 Panasonic Humidity-Sensing Bath Fans

Are you in a hurry? Check out our top 3 Panasonic bathroom fans with humidity sensors! Keep reading for more details of each pick.

  1. Panasonic WhisperSense Bath Fan With Humidity Sensor And Light
  2. Panasonic WhisperSense Bathroom Fan With Humidity Sensor
  3. Panasonic WhisperValue Low Profile Bathroom Fan

Why Panasonic Exhaust Fans?

Panasonic is a world renowned Japanese electronics company that has been in existence for over one hundred years.

It was founded by Konosuke Matsushita as he handcrafted electrical sockets with only two employees in a small house.

Panasonic is now one of the largest Japanese companies alongside Sony, Toshiba, and Hitachi --- and one of the largest television manufacturers in the world. The company currently has a market value of around 24 billion dollars.

Read Also: The Best Bathroom Exhaust Fans With Humidity Sensors (Not Just Panasonic)

Humidity Sensor

A Panasonic bathroom exhaust fan that has a humidity sensor is a special type of fan that will automatically turn on and off based on the humidity level of the bathroom.

For example, if you set the desired humidity to be 50%, then when the bath fan detects that bathroom humidity rose above that 50% level, it will automatically turn on. And when the humidity drops just below 50%, then the fan will turn off.

It acts very similar to your HVAC wall thermostat except with relative humidity rather than temperature. A humidity sensor is a great feature to make sure that the bath fan is actually used and to prevent mold growth or framing damage in the bathroom wall cavities.

Read Also: The Best Bathroom Exhaust Fans With Lights (Extra Illumination)

Motion Sensor

Besides the humidity sensor, Panasonic also includes motion sensors with all of the ventilation fans I review in this article.

A motion sensor will automatically turn on when someone just walks into the bathroom. This can be a great feature if you are tired of occupants not using the bathroom vent fan --- such as when using the toilet --- wafting bad odors through the home.

You also have the option of using only the humidity sensor, only the motion sensor, or both at the same time.

Read Also: Venting A Bathroom Fan Into An Attic (My Detailed Guide)

Adjustable Delay Timer

Another great way to control how these Panasonic fans turn on is through the included adjustable delay timer. This on board timer allows you to set between 30-sec to 1-hour as to when your bathroom fan turns on.

So if you set your humidity target to 45%, and your delay timer to 15 minutes, then the exhaust fan will only turn on when the humidity rises above 45% and wait 15 minutes for it to turn on.

Just another cool way to control these Panasonic bathroom fans.

Read Also: How To Replace A Bathroom Exhaust Fan Without Attic Access

panasonic bathroom fan with humidity sensor (1)

High Quality ECM Exhaust Fan Motor

All of these energy star rated Panasonic bathroom fans come with premium ECM (electronically commutated motor) motors which means that it is an intelligent motor with adjustable speeds. 

The great thing about this motor is that it will automatically adjust its speed to match your desired fan speed of CFM. So if you choose 80 CFM for your fan speed, the motor will adjust its speed until 80 CFM is reached.

This is a very useful feature because vent hoses can bend and meander in really weird ways.

I have been in homes where the duct vent ran over 25 feet to the outside --- that is extremely long! I have also done inspections in homes where there were several bends in the duct. 

And some of these bends were sharp angles like 90 degrees.

Also, unless you actually installed the duct, since it is inside the wall, you may not know how many turns it makes. All of these things affects the fan speed of the bathroom vent fan because of the unique resistance of the duct installation.

Ultra Quiet Fans

Since the motor is ECM, it also makes these Panasonic fans extremely quiet. In fact, all of the fans are rated at 0.3 sone or less.

You may have trouble knowing that its on! These highly efficient and quiet motors will also last much longer than cheaper motors, and even has a thermal cutoff switch to help prevent fires.

Read Also: The Best Quiet Bathroom Exhaust Fans (Nearly Silent)

Pick Your Own Ventilation Fan Speed

Since all of my reviewed Panasonic ventilation fans are ECM motors, this gives a unique feature to the bathroom fans.

Panasonic offers SmartFlow technology which means your can actually pick your own fan speed. Unlike most bathroom fans that only have one fan speed, these Panasonic fans allow you to flip a switch and choose between 50, 80, or 110 CFM.

A simple and rough guideline for choosing CFM is that you want at least 1 CFM per square foot of bathroom floor space.

The Panasonic WhisperSense bathroom fan with humidity sensor AND light is basically the same model as above --- except it comes with lighting.

If you would like an additional light fixture in your bathroom but without additional wiring and holes, then this is the exhaust fan for you.

It comes with the standard humidity and motion sensor as well as the pick-a-flow CFM switch.

  • Humidity sensor and motion sensor for automatic turn on/off
  • Extra lighting so the fan doubles as a light fixture
  • Flex-Z Fast installation bracket included
  • Works with 4" or 6" ducts
  • More expensive than lower quality bathroom vent fans
  • Extra wiring required for light

The Panasonic WhisperSense is a high quality bathroom fan with a humidity sensor.

It actually has a dual sensor, a humidity AND a motion sensor, you have even more control as to when the fan turns on. In addition to the dual sensor, it also comes with a 30-second to 1-hour adjustable delay timer.

The WhisperSense allows you to flip a switch and choose between 50, 80, or 100 CFM --- a great feature!

  • Humidity sensor AND motion sensor for unsurpassed control
  • Choose between 50, 80, or 110 CFM by flicking a switch
  • High quality ECM motor for ultra quiet operation
  • Works with 4" or 6" ducts
  • More expensive than lower quality bathroom fans
  • Difficulty in using installation bracket

The Panasonic WhisperValue is a great budget friendly ventilation fan that will automatically turn on when it senses humidity.

The WhisperValue was designed with a low or slim profile of 3-3/8 inches (thinner) so it can be easily installed in a ceiling or even a vertical wall.

This vent fan comes with most of the standard features such as the pick-a-flow CFM switch, the fast install bracket and the efficient ECM motor.

  • Humidity sensor for auto turn on/off
  • Low profile housing so it's easy to install in ceiling OR wall
  • Budget friendly
  • Works only with 4" ducts (must buy 4" to 3" duct adapter separetely)

My #1 Top Pick: The Panasonic WhisperSense Bath Fan With Humidity Sensor And Light

My overall top pick for the best panasonic bathroom fan with a humidity sensor goes to the WhisperSense With Light. Here's why...

1. Dual Sensors

It not only comes with an excellent humidity sensor, but it also includes a motion sensor, so you have many options on how you want your bath fan to automatically turn on and off.

2. Pick Your Own Fan Speed

With the WhisperSense (all of my picks) comes with SmartFlow technology by Panasonic. This means you just flip a switch and pick your own fan speed, either 50, 80, or 110 CFM.

3. High Quality Motor

The fan comes with a premium ECM motor so it operates very quiet (less than 0.3 sone) and it will last a long time. This smart motor will adjust automatically to weird vent duct runs to match your desired CFM fan speed.

4. Delay Timer

For even more control on when your fan turns on, you can set a 30-sec to 1-hour delay timer on top of the humidity sensor and/or motion sensor.

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