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Panasonic WhisperValue 0.3-Sone 110-CFM White Bathroom Fan ENERGY STAR

13 Reviews
  • Precision Spot ventilation fan, ideal for residential construction (single and multifamily) and manufactured homes
  • Pick-A-Flow speed selector – one fan, you choose the CFM (50, 80 or 100 CFM)
  • Built-in condensation sensor to control bathroom moisture


WhisperValue DC fan with pre-installed condensation sensor helps control bathroom condensation to prevent mold and mildew. It is the lowest profile ENERGY STAR rated ventilation fan available. Ideal for residential construction (Single and multi-family) and manufactured homes. It features Panasonic’s revolutionary ECM motor with SmartFlow optimum CFM technology, and incorporates a Pick-A-Flow speed selector switch to customize airflow (50-80-100 CFM).
  • Precision Spot ventilation fan, ideal for residential construction (single and multifamily) and manufactured homes
  • Pick-A-Flow speed selector – one fan, you choose the CFM (50, 80 or 100 CFM)
  • Built-in condensation sensor to control bathroom moisture
  • Revolutionary ECM motor with SmartFlow technology for optimum CFM output
  • Low profile 3.375-in depth fits virtually anywhere, including 2×4 construction; unique L-shaped bracket simplifies installation and provides strong support
  • Can be used to comply with ASHRAE 62.2, LEED, IAP, California Title 24, CALGreen and WA Ventilation Code
  • Wall installation reduces cost by eliminating the need to incorporate a radiation damper when penetrating fire rated ceilings, making it ideal for multi-family applications
  • 6-Year warranty on ECM motor; 3-year on parts
Weight 8.595 lbs
Dimensions 6.89 × 16.73 × 14.25 in

Latest reviews

  1. David

    The fan speed selector switch does Not work. Seems to be at the max of 100 CFM.
    I was hoping to quiet it down a bit by lowering the speed — watch video.

    According to LivePerson chat, who verified with a call to Panasonic — this was supposed to be “No Attic Access Required” installation. But it was pretty challenging to secure it properly. NAAR should have had better hardware / techniques to attach this to the joist, etc, BEFORE the fan goes up in there.

  2. Mike

    Bought this because of the humidity sensor. The unit it good quality and quiet. Bit of a pain to install with the oval exhaust, but other than that all good… except… no matter what I set the humidity sensor to, the unit comes on all the time. I even moved the sensor to be both up in the unit and outside of it as a test. It comes on at least every hour. I was rehabbing the bathroom so no showers or water is being used. I also checked and the humidity is lower than 50% in the room. Even set at 80, it just runs all the time sucking my conditioned air out of the house. Looking for a replacement. I can’t recommend this unit.

  3. Todd

    Purchased this fan to replace the LOUD builder quality fan in newer construction. I’ve used different Panasonic fans in other bathrooms but needed this one for a first floor bath with limited space due to upstairs plumbing. The fan isn’t listed for retrofit, but was able to install it by placing a supporting wood member inside the ceiling cut-out and using the holes around the flange. The adapter that is sold to convert from 4inch oval to 3inch round is not required. A standard 4in round to 3in round adapter works fine at about 1/2 the cost.

  4. Carl

    Bought this to replace an exhaust fan that was not cutting it. Had three speeds with a scones less than 1.0.
    However, it has a ramp up feature for humidity that seems to keep it in high speed mode all the time. Even when I set it at a lower CFM. Cannot get the fan to operate in lower mode at all. It is noisier than 0.9 since it replaced a fan that was 1.0 and is much louder. It does remove humidity quite well after a shower, but will not ramp down no matter how high I set the sensor. In fact, if sensor is set too high, fan will not turn on all until humidity builds up enough to activate. Bought two at the same time and am not happy with the outcome. .

  5. Woolybugger

    We are building a new house and my husband chose to install 3 of these fans. They are vented out of the house to avoid moisture issues down the road. One has a timer hooked up to the light and he has it set up so the light goes out when the fan does. That is to keep teenagers from spending too long in the shower. As people come to see our new house, I turn on the fan for them to hear it. They all listen closely and they always say, either they can’t hear it at all, or they can hardly hear it. As far as longevity, I can’t say, but they are definitely quiet!

  6. Martin

    This fan is incredibly quiet and with a 4 inch output, it moves a lot of air! This is now the third of these fans that I have installed in my homes. I now have a new home so I have 3 more to install and I will most definitely being using the same one.

  7. RoyRogers

    Install was tricky ’cause I had to make an adapter for the oval outlet pipe, that is the only reason for 4 stars instead of 5. It should come with an adapter, I’ve never seen a home with an oval vent pipe. Everyone thinks the bathroom fan is broken ’cause you hit the switch, and hear nothing, unless you really listen to the air swishing sound.

  8. VWBug

    We had an electrician put this in our master bathroom. He was impressed with the fan because it went in so easy and very very quiet! We needed a quieter exhaust system so that it could run while the other person was sleeping in the master bedroom. Mission accomplished! Super quiet, super easy to install! One thing to be aware of, the out-going exhaust on this is 6 inch not 4 inch.

  9. LeoL

    It was installed two months ago. So far, it’s worked great. Super silent. Excellent steam removal from 5×8 bathroom.

  10. Klink

    Super quiet. .9 sone at 100cfm sounds like nothing compared to the 4 sone of the one that came with the house.

  11. Rasputant76

    Easy to install. I like it has different fan speeds. Really quite.Overall it works well for my needs.

  12. Brittany

    My electrician and I both couldnt believe how quiet it was. At first we thought it wasnt even working. Fan coming on does have a delay but works great!

  13. Doog81

    I installed this fan & immediately noticed buzzing and rattling from motor. Fan is quiet. Contacted Panasonic, sent them videos of the problem, and they had me check the backflow preventer (totally unrelated to the noise), and concluded that my unit was defective. was pretty good about the exchange, but when I installed the new one it had the same noise problem. The strangest thing is that the serial number for both units was 003. I think Panasonic has some internal problems.

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