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A70LInVent™ Series Single-Speed Fan Light 70 CFM 2.0 Sones

  • Overview
  • Video Links
  • Specifications
  • Accessories
  • Reviews
  • Answers
  • This patent-pending series marks a revolution of our mid-range ventilation fans. It gives professionals the flexibility to handle new construction or room-side retrofit installations from one hard-working product line with a full range of operating points. Innovations include foldable mounting ears and new damper and housing technology that improve building airtightness like never before. And all with new grille designs that are at home in any decor.

    • 70 CFM reduces humidity to quickly eliminate fogged mirrors and manage moisture in bathrooms up to 65 square feet, so your vision will always be clear and your surroundings will always be comfortable
    • Retrofit installations can be done entirely from the room-side – no attic access required. This means a faster, easier installation, so you can move on to something else
    • With our TrueSeal™ Damper Technology, InVent fans reduce air leakage by up to 50%* compared to competitive models, resulting in better home performance via blower door tests and reducing cold and warm air backdrafts
    • EzDuct™ Connector can be installed room-side with no attic access required, fan housing connection have never been easier
    • UL Listed for use over tubs and showers with a GFCI circuit; so you can capture the steam before it spreads throughout the room by locating your fan exactly where you need it the most
    • 100W max. incandescent A19 type bulb or energy efficient equivalent bulb with Maximum Overall Length (M.O.L.) of 4.4" or less (bulb not included)

    *Testing reflects total fan housing airtightness. See broan.com/invent for more details.

  • Video Links

    Broan InVent Series Features & Benefits Video

    Broan InVent Series How To Install

    Older Homes and Indoor Air Quality

    Indoor Air Quality: Passions

    Spot Ventilation Can Improve the Indoor Air Quality in Your Home

    Selecting Proper Ventilation Fan Size is Easy - Danny Lipford

    What are CFMs? - Danny Lipford

    How long can the venting for my bath vent be? Can I use flexible duct? - Danny Lipford

    Cleaning a Bath Exhaust Fan - Danny Lipford

    Proper Ventilation Equals A Healthy Home - Danny Lipford

    How To Ventilate The Whole House - Danny Lipford

    Article Links

    Evacuate the Bathroom

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

  • Bathrooms up to (X) Square Feet65
    Ceiling InstallationYes
    CFM @ 0.10"70
    CFM @ 0.25"60
    cUL ListedNo
    Duct DirectionHorizontal
    Duct Size4"
    ENERGY STAR® certified productNo
    Globe ColorN/A
    Grille FinishWhite Polymeric
    Grille Length11-7/16"
    Grille Width12-1/8"
    Heater wattageN/A
    Housing Dimension LxWxH9-1/4" x 10" x 5-3/4"
    Housing Height5-3/4"
    Housing Length9-1/4"
    Housing Width10"
    Humidity SensingNo
    HVI CertifiedYes
    Light Bulb Quantity1
    Light Bulb Wattage100
    Light Bulb(s) IncludedNo
    Lighting TypeIncandescent
    Minimum construction space required2x6
    Motion SensorNo
    Motor engineered for continuous operationYes
    Product Weight10.0 lbs
    Project PackNo
    Radiation Damper AvailableNo
    Rated Amps1.3
    Rated Watts42.3
    Room-Side InstallationYes
    UL Listed for use over bathtubs or showers when connected to a GFCI circuitYes
    Wall InstallationNo
    Warranty1 Year
  • A70L is rated 2.0 out of 5 by 4.
    Rated 2 out of 5 by from Grille cover attachment horrible design and ultimate frustration My review is basically the same as the others in that the spring design for attaching the grille is ridiculous. Replacement Same spring design, just heavier metal, making it all the more difficult to attach. Four hours with the replacement was enough. I designed and attached it to the housing lip with color matching self threading screws thru the plastic grille. Worked just fine. Other than that, the fan system is acceptable, quiet, strong and solid. I wish I would have read the reviews prior to purchase.
    Date published: 2018-01-25
    Rated 1 out of 5 by from Nothing but disappointment First, the springs will not stay in either the cover or the mounting tabs. Replacement springs worked better, but significantly more difficult to install than in the 100cfm model purchased. I even had to wire the springs onto the cover to keep them in place. Second, I have been fighting a vibration noise. Even replaced the entire line of exhaust piping and exterior flap. Then started working on potential areas of movement and vibration on the fan housing and the fan chamber; all proved to provide no noise reduction. With the fan out of box, the noise is not as noticeable; however, as pushed into place, it appears that back pressure causes the fan motor to speed up and beginning rattling. Dispite the vibration, the exhaust to the exterior is very good. There are zero unattended to vibration points. I would rather exchange for the best model available vs dealing for many hours with this one. The other two higher cfm units purchased at the same time work as expected. So dissatisfied, frustrated, and exhausted.
    Date published: 2017-08-13
    Rated 2 out of 5 by from Installation of the grill is NOT for the average homeowner. There will be divorce! The springs are created by an idiot. You sent new ones and they were no better. The air is blue, the language foul and we can't take it back! No way to connect grill to the ceiling. The springs will NOT stay in. The Wife....
    Date published: 2016-08-07
    Rated 3 out of 5 by from Grill Spring Design and cover need some serious redesign The springs and cover are of an inferior design over other attachment designs. WHy not design to use a thumb screw or other snap in approaches. If I did not already have this installed I would return for a better design. The springs are impossible to get right and fail to stay attached to the cover. or box! This is a huge problem for me. Sucks really. Otherwise the fan installation was easy and performance/value is good.
    Date published: 2016-05-27
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  • What size hole do I need in the ceiling to install this?

    I am replacing a fan that has8 x 8 1/4 inch housing. Will this fit in that same hole?
    Asked by: Nan
    Thank you for your question on the Broan A70L. You can make the cut out size 11 1/8" x 10 3/8". If you have further questions please contact Technical Support directly at 800-637-1453
    Answered by: BroanCustomerService
    Date published: 2018-01-24

    Wiring A70L

    Hello, I had an older Broan bathroom fan/light and recently upgraded To the A70L. I finished the install, flipped the switch and the fan ran great. But when I tried to turn on the other lights in the bathroom, the breaker tripped. The only wire I didn't have a place for was the bare wire, which I wired to a screw on the unit. Could this be the problem?
    Asked by: Matt29
    Thank you for your question on the model A70L exhaust fan/light. The A70L has two white wires and two black wires. Please make sure that you have both white wires connected to the house white neutral wire. Please contact the Technical Service Department at 800-637-1453 if you need further assistance.
    Answered by: BroanCustomerService
    Date published: 2016-05-09

    What is the maximun distance for horizontal venting the Broan A70L

    I have a 20 foot run horizontal to reach the outside wall. Is this possible, and can I use rigid pvc 4 inch pipe?
    Asked by: PLV
    Thank you for your question on the model A70L ventilation fan and light. Using 20 feet of 4" rigid metal duct work would be our recommendation. Using this recommendation, you could run your duct work approximately 30 feet before you would see a reduction in performance. Please contact our Technical Support with further questions at 800-637-1453.
    Answered by: BroanCustomerService
    Date published: 2016-05-31

    Fan & Light on a double switch

    I hooked the Broan A70L I did so on a double switch. I can run the fan without the light but not the light without the fan. Is this the way it's supposed to be? Or can the light be turned on by itself?
    Asked by: Chris
    Thank you for your question on the model A70L ventilation fan with light. You can wire the unit so both functions operate independently of each other. Please give our Technical Support Department a call at 800-637-1453 for more assistance.
    Answered by: BroanCustomerService
    Date published: 2017-04-04

    Can I use a Y to run one larger than 4 inch line for a 20 foot run, installing fan units from two bathrooms which are next to each other?

    One unit will be the InVent Series Single-Speed Fan Light 70 CFM 2.0 Sones unit, and the other Fan will also be The InVent Series, but a little more powerful, as it is a larger bathroom. If this is possible, what special requirements may be needed, and what size should the vent line be for a 20 foot run?
    Asked by: PLV
    Thank you for your question on the A70L and its duct work. We recommend that each fan have its own individual duct work/run and termination cap. For more assistance, please contact our Technical Support team directly at 800-637-1453. Thank you.
    Answered by: BroanCustomerService
    Date published: 2016-06-01
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