77050 CFM, 1.5 Sones Bath Fan

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  • Specifications
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  • Reviews
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  • DISCONTINUED - replaced with Model AE50

    Quiet performance in a more compact package! Energy efficiency is more important than ever and now it fits in more places than ever. BROAN delivers smart designs for easy installation, classic lines that complement any decor and the performance levels you need.

    • 50 CFM
    • 1.5 Sones HVI Certified
    • Made in USA
    • 4" ducting
    • Galvanized steel housing
    • Fits in 2" x 6" ceiling construction
    • UL Listed for use over bathtubs or showers when connected to a GFCI protected branch circuit
    • Project packs available
    • Housing dimension: 8 1/4" x 8" x 5-3/4"
  • Video Links

    Cleaning a Bath Exhaust Fan - Danny Lipford

    Proper Ventilation Equals A Healthy Home - Danny Lipford

    How To Ventilate The Whole House - Danny Lipford

    Selecting Proper Ventilation Fan Size is Easy - Danny Lipford

    Article Links

    Evacuate the Bathroom

    Breathe Easy – What you need to know to ensure proper home ventilation

  • Bathrooms up to (X) Square Feet45
    Ceiling InstallationYes
    CFM @ 0.10"50
    CFM @ 0.125"N/A
    CFM @ 0.25"25
    cUL ListedYes
    Duct DirectionHorizontal
    Duct Size4"
    ENERGY STAR® certified productNo
    Globe ColorN/A
    Grille FinishWhite Polymeric
    Grille Length11-1/8"
    Grille Width11-3/8"
    Heater wattageN/A
    Housing Dimension LxWxH8" x 8-1/4" x 5-3/4"
    Housing Height5-3/4"
    Housing Length8"
    Housing Width8-1/4"
    Humidity SensingNo
    HVI CertifiedYes
    Light Bulb Quantity0
    Light Bulb WattageN/A
    Light Bulb(s) IncludedNo
    Lighting TypeNo Light
    Minimum construction space required2x6
    Motor engineered for continuous operationYes
    Product Weight7 lbs
    Project PackNo
    Rated Amps0.2
    Rated Sones - VerticalN/A
    Rated Watts17.5
    UL Listed for use over bathtubs or showers when connected to a GFCI circuitYes
    Wall InstallationNo
    Warranty1 Year
    Watts @ 0.1"17.5
    Watts @ 0.25"N/A
  • 770 is rated 5.0 out of 5 by 5.
    Rated 5 out of 5 by from good product, meet expections Although I had the unit installed by a contractor, it has performed very well, very quiet. It has been very reliable and a good product for the price. I would highly recommend it.
    Date published: 2015-07-16
    Rated 5 out of 5 by from Easy to install, Quite I replaced a 20 year old 50 CFM fan with a propeller with this Broan, which has a squirrel cage fan. It takes all of the moisture out of the bathroom and does so quietly. Except for getting into the attic, it is an easy install.
    Date published: 2015-02-22
    Rated 5 out of 5 by from Excellent exhaust fans I purchased seven of these for two jobs. They are easy to install and operate very quite.
    Date published: 2015-01-13
    Rated 5 out of 5 by from This product surprised. I chose this product because the style fit the cavity in the ceiling just right. Noise level and energy star were bonus. Gord Canada
    Date published: 2014-09-05
    Rated 5 out of 5 by from I bought this model and installed it about one month ago and it works fine and is very quiet.
    Date published: 2014-04-07
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  • Is there a max duct length run? Model 784

    Asked by: Cheeks
    Thank you for your question on the model 784 exhaust fan. Using four inch rigid duct work you can run the duct 23 feet straight without losing CFM. You would need to reduce that length by four feet for every elbow installed.
    Answered by: BroanCustomerService
    Date published: 2014-11-03

    Is the motor brushless?

    Asked by: Murf
    Thank you for your question on the Broan 784 fan. Yes, this is a brushless motor.
    Answered by: BroanCustomerService
    Date published: 2014-11-25

    Can I retrofit a light with this unit?

    I have this fan installed in my bath room and am happy with its performance. I would like to add a light to the fan instead of replacing the whole unit.
    Asked by: Syd
    Thank you for your question on the model 784 exhaust fan. There is no option available for adding a light to the 784 exhaust fan. If you need a light you would need to completely remove the 784 from the ceiling and install a different model.
    Answered by: BroanCustomerService
    Date published: 2014-12-01

    does the 784 come pre assembled with the rdj1 or does it have to be installed in the field

    Asked by: j
    These two items are sold and packaged separately. They must be assembled in the field.
    Answered by: BroanCustomerService
    Date published: 2014-05-14

    Sone rating for 45 sf bath w/ 8' high ceiling

    I'm having a hard time relating Sone ratings to a known sound. I don't need a super quiet fan nor do I want an annoyingly loud fan, but how audible is a 2 sone fan? I've calc'd my CFM to be in the range of 72-96 CFM. Thanks
    Asked by: Alison
    Thank you for your question on the model 784 exhaust fan. A sone is a linear sound measurement where two sones are twice as loud as one sone and threes sones are three times as loud as one, and so on. A sone is approximately equivalent to a modern day refrigerator running.
    Answered by: BroanCustomerService
    Date published: 2014-04-30
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