Broan 670 White 50 CFM 3.5 Sone Ceiling or Wall Mounted HVI Certified Bath Fan

Item #: bci93362

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Technical Specs

Installation Guide
Installation Manual
Specification Sheet
Product Specifications
Indoor Air Quality Graphic
Amperage 0.8
CFM 50
CFM (High) 50
Collection Economy
Configuration Exhaust Fan
Country Of Origin USA
Duct Discharge Horizontal
Duct Size 3" Round
Energy Star No
Function Bath Fan
Grille Finish Whites
Grille Length 9
Grille Width 9.25
HVI Certified Yes
Heater Included No
Housing Depth 3.625
Housing Length 7.5
Housing Width 7.25
Humidity Sensing No
Installation Type Ceiling, Wall
Light Included No
Made in America Yes
Manufacturer Warranty 1 Year Limited
Material Plastic
Max Ventilation Area 45
Motion Sensor No
Night Light No
Product Weight 4
Sones 3.5
Speeds 1
UL Listed Yes
Voltage 120
Wattage 55


  • Features a powerful 50 CFM permanently lubricated and sealed motor that's specifically designed for continuous use applications
  • Compact housing mounts directly to inboard joists, making retrofit or new installation applications straight-forward and simple
  • Compatible with a number of Broan multi-function and time control wall switches (sold separately)
  • UL listed and suitable for use over bathtubs and showers when connected to a GFCI-protected branch circuit

Product Technologies:

Sones-highHigh Sones: We know that comfort and ambience matter in your bathroom. This fan produces 3.5 sones of sound output while the fan is in operation.

CFM-lowLow CFM Capacity: This fan has an efficient 50 CFM (cubic feet per minute) of clearing capacity designed for smaller bathrooms. Controlling humidity in your bathroom extends the life of your décor and makes for a more hospitable space to prepare for the day ahead.


  • CFM: 50
  • Sones: 3.5
  • Duct Size: 3 Inch Round
  • Grill Width: 9.25 Inches
  • Grill Length: 9 Inches
  • HVI Certified: Yes
  • UL Listed: Yes
  • Light Included: No
  • Housing Length: 7-1/2"
  • Housing Width: 7-1/4"
  • Housing Depth: 3-5/8"

Product Variations:

  • 670 (This Model): 50 CFM
  • 671: 70 CFM

Additional Broan Links

Our SKU: 670

This product is listed under the following manufacturer number(s):

  • White

*Denotes a finish or option that has been discontinued

1 Question from the Community

  • The Broan 670 has the following measurements in inches; Grille Length- 9 Grille Width- 9.25 Housing Depth- 3.625 Housing Height- 3.625 Housing Length- 7.25 Housing Width- 7.5

    What are the broan 670 measurements?

    A. The Broan 670 has the following measurements in inches; Grille Length- 9 Grille Width- 9.25 Housing Depth- 3.625 Housing Height- 3.625 Housing Length- 7.25 Housing Width- 7.5

Product Reviews

Rated 4 out of 5 by from Good value The fan works very well, however, it still is a bit on the noisy side and due to the size I guess that is expected. Overall it is a good value for the dollar.
Date published: 2013-05-28
Rated 5 out of 5 by from Just what I wanted I was able to easily find the exact model of bathroom fan I wanted on this site. If you have an old fan and want an exact replacement this is the site to go to.
Date published: 2011-09-09
Rated 4 out of 5 by from Just What We Needed Our old bathroom fan quit after being used for many years. We needed a new fan that fit the opening and also gave adequate ventilation. After shopping online and in town without finding what we needed, we came across the Broan 670 at We ordered it online and when it arrived it took only a few minutes to install. The only down side is that it is a little noisier than we would like.
Date published: 2011-07-23
Rated 5 out of 5 by from All I expected Venting Direct provided me the information on the product I required to make a informed decision on the fan I purchased. I had already solved the formular on how to determine amount of exhaust airflow required for my bathroom. Installation was a breeze too.
Date published: 2008-12-04
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Warranty Info


Broan-NuTone LLC warrants to the original consumer purchaser of its products that such products will be free from defects in materials or workmanship for a period noted in the chart to the left from the date of original purchase. THERE ARE NO OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. During the stated warranty period, Broan-NuTone LLC will, at its option, repair or replace, without charge, any product or part which is found to be defective under normal use and service. THIS WARRANTY DOES NOT EXTEND TO FLUORESCENT LAMP STARTERS, TUBES AND BULBS, FUSES, FILTERS, DUCTS, ROOF CAPS, WALL CAPS AND OTHER ACCESSORIES FOR DUCTING. This warranty does not cover (a) normal maintenance and normal service or (b) any products or parts which have been subject to misuse, negligence, accident, improper maintenance or repair (other than by Broan-NuTone LLC), faulty installation or installation contrary to recommended installation instructions. Labor to remove and replace products is not covered. The duration of any implied warranty is limited to the time period specified for the express warranty. Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you. BROAN-NUTONE LLC’S OBLIGATION TO REPAIR OR REPLACE, AT BROAN-NUTONE LLC’S OPTION, SHALL BE THE PURCHASER’S SOLE AND EXCLUSIVE REMEDY UNDER THIS WARRANTY. BROAN AND/OR NUTONE SHALL NOT BE LIABLE FOR INCIDENTAL, CONSEQUENTIAL OR SPECIAL DAMAGES ARISING OUT OF OR IN CONNECTION WITH PRODUCT USE OR PERFORMANCE. Some states do not allow the exclusion or limitations of incidental or consequential damages, so the above limitation or exclusion may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. This warranty supersedes all prior warranties. - See more at:


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