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Fan Type
Booster Fans
Duct Size
8" Duct
110V AC
Ease of Installation
Advanced (Installs > 60 minutes)
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Increases the Flow of Air Into or Out of a Room with Quiet and Smooth Operation
Tjernlund EF-8 Duct Booster Fan - 8 Inches
Tjernlund EF-8 Duct Booster Fan - 8 Inches
Tjernlund EF-8 Duct Booster Fan - 8 Inches
Item# 32520
Price: Normally $139.00 
Hot Deal $61.57
Free shipping on orders over $175 - See Details


  • Galvanized steel housing with aluminum prop fan
  • Can be installed in metal or flex ducting
  • Withstands air temperatures up to 150 degrees F (65 degrees C)
  • Great for residential or commercial use

Essential Info

With this duct fan installed into your home or business building, you’ll be able to boost the ventilation into or out of a certain area. Move warm or cool air into rooms that are notoriously hard to keep at a comfortable temperature. Install into a bathroom to draw out steam while hot water is running. Or use it in workshops as a fume control system. The fan is designed to serve individual rooms for more precise climate control and ventilation. Steel housing and an aluminum fan make the fan ultra-durable but allows for operation so quiet you’ll forget it is running.

This product is also available in 6, 10, 12, and 14 inches, each sold separately. There are also 6 inch and 8 inch versions with automatic switches to turn on the booster fan whenever the heater or AC come on.


What's Included

  • 1x - 8-Inch Duct Booster Fan

  • Specifications

    Manufacturer Product No.EF-8
    Open Drip ProofAuto
    Therm. ProtectYes
    Dimensions8" Diameter x 9" D
    Important notes:
    Defective exchanges for identical item within 30 days of purchase. After 30 days, please contact the manufacturer.
    Manufacturer contact information: Tjernlund Products Inc, Tel: (800) 255-4208 Ext


    4 Ratings
    5 star: 50%  (2)
    4 star: 0%  (0)
    3 star: 25%  (1)
    2 star: 25%  (1)
    1 star: 0%  (0)
    Average Customer Rating
    (4 customer ratings)
    Share your thoughts with other customers
    HUNG Q -- falls church, VA   7/31/2013
    Incorrect picture: fan came with a c-frame motor, not an enclosed motor as shown. Very disappointed of this purchase!
    JAY -- glen carbon, IL   8/5/2012
    I installed this fan iin the air return to increase return from the second floor. Results are minimal. Not the fan's fault, it movesplenty 0f air. It is hoever very noisy and the sound comes out of the return grille as well as well as thru floor joist.
    MATTHEW -- beaverton, OR   11/21/2011
    Very powerful, well constructed, easy to install. Only downside is it is a little noisier than the plastic fan varieties... but if it is in a well insulated location it should work fine.
    Matt -- Oregon   10/29/2011
    Not the standard plastic blade fan you get at the major home improvement stores. Solid metal unit, metal fan blades, high quality construction w/ IC box to keep your connections isolated from insulation if installing in an attic. Does seem to rattle and make a little more noise than the plastic fan boosters, but it is not significantly louder. Install and wiring is a breeze w/ standard 8 ducting. Give a good boost when needed.

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