Duct Booster® Fans

Duct Booster® Fans
Your Best Value for boosting air flow in ducts or for powered air intakes and exhausts.		  

 
 
Residential and Commercial Sizes.  Quality construction, Economically priced.
  • Boosts air flow in hard to heat or cool rooms.
  • Models for ducts 5" through 14".
  • Models EF-6 through EF-14 may be used as exhaust or air intake fans.
  • Easy installation in both metal and flex duct.
  • Optional speed and Duct Airstat operating controls.
  • Quiet, smooth operation.
    		•
    Commercial/ Residential
    • Duct Booster Fan
    • Out Door Air Supply
    • Lunch Room Exhauster
    • Pole Barn Warehouse Exhaust
    • Spot Ventilation
    • Bathroom Exhaust
    • Fume Control systems

    Booster Installation

    Selection Table
       

    DUCT LENGTH IN FEET
    Model
    Motor Specifications
    25 Feet
    CFM
    50 Feet
    CFM
    75 Feet
    CFM
    Free Air
    CFM
    DB-2, 6" Duct 
    DB-2, 8" Duct
    120V      1/70 HP  .51A
    150
    250
    100
    220
    95
    180
    200
    275
    EA-5
    120V     30 Watt   .40A
    150
    100
    90
    180
    EF-6
    120V      30 Watt   .40A
    150
    100
    90
    180
    EF-8
    120V      56 Watt    1.1A
    300
    250
    200
    325
    EF-10
    120V      1/100 HP  .46A
    400
    325
    275
    475
    EF-12
    120V     1/35 HP    1.25A
    800
    700
    600
    875
    EF-14
     120V     1/25 HP     1.70A
    1100
    1000
    900
    1200
    1. Table is based on straight metal duct.  90 Degree elbows are equivalent to 10 feet of straight duct. Performance based on 70 degrees F. standard air.
    2. The DB-2 can be installed in round ducts up to 8", rectangular ducts as shallow as 3 1/4".
    3. The model EA-5 can be installed in either round or rectangular ducts 6" or larger.
    4. The number after EF-matches the duct diameter.  Example EF-8 connects to 8" round duct.
    5. For complete dimension and performance specifications consult factory.
    HIGH PRESSURE DUCT BOOSTER® FANS

    		  Versatile and durable Tjernlund M and P-Series Fans feature high pressure air handling performance with low noise and extremely low power usage.

    M-Series fans (metal housing) are ideal for long runs or air supply and exhaust applications requiring exacting performance.  Use P-Series fans (plastic housing) as ultimate bathroom/spa exhausters to eliminate fogged mirrors and lingering odors, super quiet.  They also work great for exhausting high moisture areas such as sub-slab radon gas mitigation and dryer vent boosting.

    M-Series (Metal) Performance

    Model
    Motor
    HP
    Watts
    RPM
    Volts
    CFM VS Static Pressure
    0"       1/8"     1/4"     3/8"     1/2"      3/4"     1"     1 1/2"     2"
    Duct 
    Dia.
    Weight
    M-4
    1/30
    48
    3140
    115
    		 122     111      86       74         61        18       --        --         --
    4"
    6 LBS.
    M-6
    1/20
    90
    2500
    115
    		 270     250      235     204      180       138    107      --         --
    6"
    7 LBS.
    M-8
    1/15
    120
    2150
    115
    		 498     470      447     399      350       296   194       93       --
    8"
    9 LBS.

     
    Dimensional Data
    Model
    OD
    d
    a
    M Series
    M-4
    8
    4
    6 1/2
    M-6
    11 1/2
    6
    5 1/2
    M-8
    13 1/4
    8
    6 1/4
     

    P-Series (Plastic) Performance

    Model
    Motor
    HP
    Watts
    RPM
    Volts
    CFM VS Static Pressure
    0"   1/8"   1/4"   3/8"   1/2"   3/4"   1"  1 1/2"   2"
    Duct
    Dia.
    Sones
    Weight
    P-4
    1/30
    48
    3140
    115
    		 150   130     100      78      68        60      --       --       --
    4"
    --
    6 LBS.
    P-6
    1/20
    90
    2500
    115
    		 270    255     235    200     180     140    110     --        --
    6"
    2.1
    8 LBS.
    P-8
    1/15
    100
    2150
    115
    		 410    375     340    285     225     180    135     --        --
    8"
    3.2
    11 LBS.

     
    Dimensional Data
    Model
    OD
    d
    a
    P Series
    P-4
    9 1/2
    3 7/8
    5 1/4
    P-6
    11 3/4
    5 3/4
    5 7/8
    P-8
    13 1/4
    8
    6 1/4

     

    Duct Booster® Fan Accessories
    Model PS1503 Duct Airstat
    • Senses positive pressure from central blower
    • Works year-round for both heating and a/c
    • Simplifies wiring


    Model SC-1 Speed Control
     
    • Use to turn Duct Fans on/off and to vary motor RPM
    • Can be used with PS1503 Duct Airstat.
    • Can be used with Models EA-5, EF-6, EF-8,
      & EF-10 (Face plate fits models EF-6, 8, 10)
    		 Accessories
    SC-1             G-Series            BD-Series
    DR-10 Dryer Vent Switch
    Used to automatically activate P-Series Duct Booster when dryer is in operation
    G-Series Supply/Exhaust Grills
    White plastic, dual
    purpose grills with mounting 
    collars  (4", 6", 8" Sizes)
    BD-Series Back Draft Dampers:
    Galvanized steel, spring
    loaded dampers prevent
    backdrafts. (4", 6", 8" Sizes)
     

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