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670Ceiling/Wall Ventilation Fan, 50 CFM

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  • Remove air wherever needed with Broan compact ventilation fans.
    • 50 CFM 3.5 Sones
    • Industry Exclusive
    • Durable Broan-designed blower wheel
    • Torsion spring grille mounting – no tools necessary
    • Compact housing fits easily between ceiling joists or wall studs
    • Double strength steel mounting flanges with keyhole slots for fast installation
    • Single packs and Project Paks
    • Metal grille kit S97011308 (available separately)
  • 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"N/A
    ColorWhite
    CSANo
    cUL ListedNo
    Duct DirectionHorizontal
    Duct Size3"
    ENERGY STAR® certified productNo
    Globe ColorN/A
    Grille FinishWhite Polymeric
    Grille Length9"
    Grille Width9-1/4"
    Heater wattageN/A
    Housing Dimension LxWxH7-1/4" x 7-1/2" x 3-5/8"
    Housing Height3-5/8"
    Housing Length7-1/4"
    Housing Width7-1/2"
    Humidity SensingNo
    HVI CertifiedYes
    Light Bulb Quantity0
    Light Bulb WattageN/A
    Light Bulb(s) IncludedNo
    Lighting TypeNo Light
    MaterialPolymeric
    Minimum construction space required2x4
    Motor engineered for continuous operationNo
    NightlightNo
    Product Weight4 lbs
    Project PackNo
    Rated Amps0.8
    Rated Sones - VerticalN/A
    Rated Watts55
    Sones3.5
    UL Listed for use over bathtubs or showers when connected to a GFCI circuitYes
    Wall InstallationYes
    Warranty1 Year
    Watts @ 0.1"55
    Watts @ 0.25"N/A
  • 670 is rated 4.2 out of 5 by 25.
    Rated 4 out of 5 by from Replaced same 21 year old fan The 671 fan was an exact replacement for the 21 year old that was installed with the house. The removal of the old fan and installation of the new went as described; not quite as easy as the video I found in the internet. However, as others have noted, it is VERY loud. It is probably twice as loud as the old fan even with the squacking bearing. Maybe a 2 speed switch could be offered on the fan motor which might, hopefully, reduce the noise level.
    Date published: 2017-05-10
    Rated 5 out of 5 by from Easy install I originally was just going to replace the fan and motor. When I went to hardware store I found it was a dollar cheaper to get the whole fan kit. So I just had to push in new fan and motor assembly into existing sheet metal shroud and plug in. I used the new grill also. Very easy process. All for under 18 bucks! I liked how the new motor and fan fit into the existing 17+ year old shroud.
    Date published: 2017-02-09
    Rated 4 out of 5 by from Replaces688J just fine. I needed to replace a 19 year old 688J model. Bought the 688 as currently exists at Lowes for $14.97. Easy installation, fit original frame like a glove. Followed few You-tube videos. If want lower sones rating, I would hope the ccmpany in future makes clear what can be substituted into the same assembly.
    Date published: 2017-01-16
    Rated 5 out of 5 by from This product is quiet We had purchased a fan like this 16 years ago for our bathroom. Remodeled the bathroom this year and put the same one back in. Much quieter than the old one.Good value for the price.
    Date published: 2016-04-29
    Rated 5 out of 5 by from WOULD RECOMMEND THIS EXHAUST FAN IS VERY VERY QUITE AND SUCKS THE STEAM OUT OF THE BATHROON SO THAT THE MIRROR DOES NOT FOG UP.
    Date published: 2016-04-28
    Rated 5 out of 5 by from Very worth while purchase Started out just buying an inexpensive exhaust fan to replace an ancient fan, likely 40 years old. Biggest problem was old hole was round and new install is square. Easy to fix, just a couple minutes of work with a sheet rock saw and hole was square! Took maybe ten minutes to do the entire install. My biggest surprise was how quiet it is overall. Not the quietest fan I have ever come across, but much quieter than I was expecting at this price point :) Easy to install, even with needed ceiling modification. Attractive and fairly quiet. Very good value for the money as well as good quality. Would buy this again!!
    Date published: 2016-04-26
    Rated 5 out of 5 by from Does the job This is a low CFM model but it is important to size the unit for your particular room size. As far as noise goes, it is common to make a bath fan loud so as to mask any other "noises", both to benefit the person sitting on the throne as well as anyone else within hearing distance. This is especially true in a powder room where it may adjacent to other living spaces and the reason that they have different sound ratings. If you want a quiet one, pick one with the lower level.
    Date published: 2016-04-06
    Rated 5 out of 5 by from Great Product For A Great Price Went to my local hardware store and found this unit. Unit was easy to wire and mount. Like the ease of not having to use any tools to take the motor out or put it in. This unit replaced an older unit that was on its last leg. Night and day difference and a lot quieter..
    Date published: 2016-01-17
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  • want to mount model 688 in a wall isa hood av for outside

    Asked by: Anonymous
    Thank you for your question on the model 688 ventilation fan. Yes, there are wall and roof caps available using a 3" duct size. Please contact Customer Service for more assistance in choosing the cap that is right for your needs at 800-558-1711.
    Answered by: BroanCustomerService
    Date published: 2016-05-25

    Can I replace a 688-K?

    I have a non-operational 688-K mounted in my bathroom ceiling. I cannot access the unit via the attic. Is it possible to replace the unit, or the motor, with access available only from the bathroom? Thanks.
    Asked by: Anonymous
    To some extent it depends on how the unit was installed, but the short answer is most likely you can replace the motor and unit from inside the bathroom. Take the grill off and look to see how it was installed. Look to see if the motor attachment are still exposed.
    Answered by: Jasper
    Date published: 2016-11-19

    Damper operation on Model 688

    How do I know the damper is operating properly on Model 688 series fans? I just cleaned both of mine, and the dampers seemed immovable. Is there a special release that is triggered when the motor assembly is in place?
    Asked by: Anonymous
    Thank you for your question on the model 688 exhaust fan. The damper in the model 688 is a gravity fed damper. If you remove the power unit from the unit housing, you should be able to reach the damper. It should move freely when you touch it. If it does not, there is a problem with it. For further assistance please contact our Technical Service Department at 800-637-1453.
    Answered by: BroanCustomerService
    Date published: 2013-10-23

    Damper doesn't open when fan is on.

    May never have opened. Bought the home new. Just replace louvered vent on outside of house. When I ran the fan to make sure new vent worked properly it was almost as if it was being sucked shut. Could the original install have wired or mounted the motor wrong so that it is pulling in air rather than exhausting?
    Asked by: Anonymous
    No, the motor runs so it is wired correctly, as it is an AC motor. I would suggest pulling off grill and with unit off, check to see if damper will open with a small stick or pencil. Most often problem is blockage by debris or the like. If it does open when gently pushed open. Using a flashlight and staying clear of the fan, observe flapper door while someone else turns on fan, to see if it opens. As it is in a new home, the outlet of the fan should go into some ducting, routing the moist air out of the attic area. If this ducting is collapsed or incorrectly installed, you will have the same kind of problem you are describing.
    Answered by: Jasper
    Date published: 2016-10-29

    What year was the first Broan Model 670 H made available to install?

    Asked by: Anonymous
    Thank you for your question on the model 670 exhaust fan. Please contact the Technical Service Department at 800-637-1453 for assistance.
    Answered by: BroanCustomerService
    Date published: 2014-12-12
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