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Duct Pressure Switches

43 products found

Install a duct pressure switch from Grainger to help your HVAC system do its job. An air switch senses positive, negative or differential air pressure and actuates an internal switch. Duct pressure switches automatically start and stop auxiliary devices like electronic air cleaners, duct heaters, humidifiers, exhaust fans and duct booster fans. Rely on Grainger for a wide range of duct pressure switch options.Close

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  • Switch, Air Sensing

    Brand
    COLUMBUS ELECTRIC
    Item #
    2E462
    Mfr. Model #
    GRH3AD
    Switch, Air Sensing
    Web Price $24.30 / each
  • Pressure Sensing Switch, 1-1/2" D

    Brand
    SUPCO
    Item #
    407L09
    Mfr. Model #
    NS2000031
    Pressure Sensing Switch, 1-1/2" D
    Web Price $14.30 / each
  • Switch, Air Sensing

    Brand
    CLEVELAND CONTROLS
    Item #
    3ZM92
    Mfr. Model #
    AFS-222
    Switch, Air Sensing
    Web Price $20.70 / each
  • Switch, Air Sensing

    Brand
    CLEVELAND CONTROLS
    Item #
    4XB70
    Mfr. Model #
    RFS-4150
    Switch, Air Sensing
    Web Price $15.85 / each
  • Air Sensing Switch, Auto Reset, SPDT

    Brand
    POWERS CONTROLS
    Item #
    40PN35
    Mfr. Model #
    141-0518
    Air Sensing Switch, Auto Reset, SPDT
    Web Price $61.75 / each
  • Switch, Air Sensing

    Brand
    CLEVELAND CONTROLS
    Item #
    3ZM96
    Mfr. Model #
    RSS-495-011
    Switch, Air Sensing
    Web Price $12.00 / each
  • Air Sensing Switch, Adjustable

    Brand
    CLEVELAND CONTROLS
    Item #
    6XPX7
    Mfr. Model #
    NS2-0000-05
    Air Sensing Switch, Adjustable
    Web Price $11.90 / each
  • Air Sensing Switch, Fixed

    Brand
    CLEVELAND CONTROLS
    Item #
    6XPX9
    Mfr. Model #
    DFS-221-112-395
    Air Sensing Switch, Fixed
    Web Price $14.10 / each
  • Pressure Switch, Differential, 0.8to 4InWC

    Brand
    DWYER INSTRUMENTS
    Item #
    4FTP2
    Mfr. Model #
    ADPS-05-2-N
    Pressure Switch, Differential, 0.8to 4InWC
    Web Price $27.60 / each
  • Differential Air Pressure Switch

    Brand
    JOHNSON CONTROLS
    Item #
    40G363
    Mfr. Model #
    P32AC-2C
    Differential Air Pressure Switch
    Web Price $76.50 / each
  • Air Sensing Switch, Manual Reset, SPST

    Brand
    SIEMENS
    Item #
    40PN37
    Mfr. Model #
    141-0575
    Air Sensing Switch, Manual Reset, SPST
    Web Price $72.25 / each
  • Differential Air Pressure Switch

    Brand
    JOHNSON CONTROLS
    Item #
    40G365
    Mfr. Model #
    P32AF-1C
    Differential Air Pressure Switch
    Web Price $68.75 / each
  • Airflow Switch, Auto Reset, SPDT

    Brand
    SIEMENS
    Item #
    2KGR4
    Mfr. Model #
    141-0574
    Airflow Switch, Auto Reset, SPDT
    Web Price $60.50 / each
  • Pressure Switch, Differential, 0.12to1.6In

    Brand
    DWYER INSTRUMENTS
    Item #
    4FTN9
    Mfr. Model #
    ADPS-04-2-N
    Pressure Switch, Differential, 0.12to1.6In
    Web Price $27.30 / each
  • Switch, Air Sensing

    Brand
    CLEVELAND CONTROLS
    Item #
    3ZM94
    Mfr. Model #
    AFS-460
    Switch, Air Sensing
    Web Price $28.70 / each
  • Pressure Switch, Differential, 0.2to 2InWC

    Brand
    DWYER INSTRUMENTS
    Item #
    4FTP1
    Mfr. Model #
    ADPS-03-2-N
    Pressure Switch, Differential, 0.2to 2InWC
    Web Price $27.30 / each
  • Pressure Sensing Switch, Adjustable

    Brand
    TJERNLUND
    Item #
    14U189
    Mfr. Model #
    PS2501
    Pressure Sensing Switch, Adjustable
    Web Price $77.50 / each
  • Switch, Air Sensing

    Brand
    CLEVELAND CONTROLS
    Item #
    3ZM93
    Mfr. Model #
    AFS-405
    Switch, Air Sensing
    Web Price $27.40 / each
  • Differential Air Pressure Switch

    Brand
    JOHNSON CONTROLS
    Item #
    40G350
    Mfr. Model #
    P233A-4-PAC
    Differential Air Pressure Switch
    Web Price $22.15 / each
  • Pressure Switch, .05-2.0

    Brand
    ROBERTSHAW
    Item #
    6XJU4
    Mfr. Model #
    2374-501
    Pressure Switch, .05-2.0
    Web Price $27.70 / each
  • Differential Air Pressure Switch

    Brand
    JOHNSON CONTROLS
    Item #
    40G364
    Mfr. Model #
    P32AC-8C
    Differential Air Pressure Switch
    Web Price $68.50 / each
  • Pressure Switch, Differential, SPDT

    Brand
    JOHNSON CONTROLS
    Item #
    20RG53
    Mfr. Model #
    P32AF-13C
    Pressure Switch, Differential,  SPDT
    Web Price $75.75 / each
  • Pressure Sensing Switch, .25-1.0

    Brand
    ROBERTSHAW
    Item #
    6XJU0
    Mfr. Model #
    2374-495
    Pressure Sensing Switch, .25-1.0
    Web Price $21.95 / each
  • Dif Pressure Switch, Adjustable

    Brand
    DWYER INSTRUMENTS
    Item #
    24Z008
    Mfr. Model #
    ADPS-08-2-N
    Dif Pressure Switch, Adjustable
    Web Price $27.40 / each
  • Switch, Fan Proving

    Brand
    TJERNLUND
    Item #
    4C725
    Mfr. Model #
    PS1505
    Switch, Fan Proving
    Web Price $78.75 / each
  • Pressure Switch, Differential, 2to 10In WC

    Brand
    DWYER INSTRUMENTS
    Item #
    4FTP3
    Mfr. Model #
    ADPS-06-2-N
    Pressure Switch, Differential, 2to 10In WC
    Web Price $27.60 / each
  • Pressure Sensing Switch, .05-12

    Brand
    ROBERTSHAW
    Item #
    6XJU2
    Mfr. Model #
    2374-499
    Pressure Sensing Switch, .05-12
    Web Price $34.10 / each
  • Differential Air Pressure Switch

    Brand
    JOHNSON CONTROLS
    Item #
    40G362
    Mfr. Model #
    P32AC-1C
    Differential Air Pressure Switch
    Web Price $68.75 / each
  • Differential Air Pressure Switch

    Brand
    JOHNSON CONTROLS
    Item #
    40G366
    Mfr. Model #
    P32AF-2C
    Differential Air Pressure Switch
    Web Price $77.50 / each
  • Switch, Duct Pressure

    Brand
    TJERNLUND
    Item #
    5C968
    Mfr. Model #
    PS1503
    Switch, Duct Pressure
    Web Price $43.80 / each
  • Switch, Air Sensing

    Brand
    CLEVELAND CONTROLS
    Item #
    3ZM97
    Mfr. Model #
    RSS-498-015
    Switch, Air Sensing
    Web Price $15.55 / each
  • Pressure Sensing Switch, SPDT

    Brand
    ROBERTSHAW
    Item #
    6XJV1
    Mfr. Model #
    2374-508
    Pressure Sensing Switch, SPDT
    Web Price $47.60 / each
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