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Duct Pressure Switches

44 results found that include 44 products

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
    Switch,Air Sensing
    • COLUMBUS ELECTRIC
    • Item # 2E462
    • Mfr. Model # GRH3AD
    • Air Sensing Switch, HVAC/General Purpose, Differential (In. WC) 0.02 to 0.8, SPDT Switch Type, Pressure...More

  • Pressure Sensing Switch,1-1/2" D
    Pressure Sensing Switch,1-1/2" D
    • SUPCO
    • Item # 407L09
    • Mfr. Model # NS2000031
    • Pressure Sensing Switch, HVAC/General Purpose, SPDT Switch Type, Pressure Setting Range (In. WC) 0.10 to...More

  • Switch,Air Sensing
    Switch,Air Sensing
    • CLEVELAND CONTROLS
    • Item # 3ZM92
    • Mfr. Model # AFS-222
    • Air Sensing Switch, HVAC/General Purpose, Differential (In. WC) 0.02 to 0.8, SPDT Switch Type, Pressure...More

  • Switch,Air Sensing
    Switch,Air Sensing
    • CLEVELAND CONTROLS
    • Item # 4XB70
    • Mfr. Model # RFS-4150
    • Air Sensing Switch, HVAC/General Purpose, Differential (In. WC) 0.02 to 0.3, SPDT Switch Type, Pressure...More

  • Switch,Air Sensing
    Switch,Air Sensing
    • CLEVELAND CONTROLS
    • Item # 3ZM96
    • Mfr. Model # RSS-495-011
    • Air Sensing Switch, HVAC OEM, Differential (In. WC) +/-0.05, SPDT Switch Type, Pressure Setting Range (In....More

  • Air Sensing Switch,Adjustable
    Air Sensing Switch,Adjustable
    • CLEVELAND CONTROLS
    • Item # 6XPX7
    • Mfr. Model # NS2-0000-05
    • Air Sensing Switch, HVAC OEM, Differential (In. WC) 0.03 to 0.09, SPDT Switch Type, Pressure Setting Range...More

  • Air Sensing Switch,Auto Reset,SPDT
    Air Sensing Switch,Auto Reset,SPDT
    • POWERS CONTROLS
    • Item # 40PN35
    • Mfr. Model # 141-0518
    • Air Sensing Switch, Auto Reset, Differential (In. WC) 0.6 to 1.5, SPDT Switch Type, Pressure Setting Range...More

  • Air Sensing Switch,Fixed
    Air Sensing Switch,Fixed
    • CLEVELAND CONTROLS
    • Item # 6XPX9
    • Mfr. Model # DFS-221-112-395
    • Air Sensing Switch, HVAC/General Purpose, Differential (In. WC) 0.02, SPDT Switch Type, Pressure Setting...More

  • Pressure Switch,Differential,0.8to 4InWC
    Pressure Switch,Differential,0.8to 4InWC
    • DWYER INSTRUMENTS
    • Item # 4FTP2
    • Mfr. Model # ADPS-05-2-N
    • Pressure Switch, Differential, Pressure Setting Range (In. WC) 0.8 to 4.0 In. WC, Sample Line Connector 1/4...More

  • Switch,Air Sensing
    Switch,Air Sensing
    • CLEVELAND CONTROLS
    • Item # 3ZM93
    • Mfr. Model # AFS-405
    • Air Sensing Switch, Gold Contact, Differential (In. WC) 0.02 to 0.01, SPDT Switch Type, Pressure Setting...More

  • Pressure Switch,Differential,0.2to 2InWC
    Pressure Switch,Differential,0.2to 2InWC
    • DWYER INSTRUMENTS
    • Item # 4FTP1
    • Mfr. Model # ADPS-03-2-N
    • Pressure Switch, Differential, Pressure Setting Range (In. WC) 0.2 to 2.0 In. WC, Sample Line Connector 1/4...More

  • Switch,Air Sensing
    Switch,Air Sensing
    • CLEVELAND CONTROLS
    • Item # 3ZM94
    • Mfr. Model # AFS-460
    • Air Sensing Switch, Manual Reset, Differential (In. WC) 0.06 to 0.8, SPST NC Switch Type, Pressure Setting...More

  • Airflow Switch,Auto Reset,SPDT
    Airflow Switch,Auto Reset,SPDT
    • SIEMENS
    • Item # 2KGR4
    • Mfr. Model # 141-0574
    • Airflow Switch, Auto Reset, Differential (In. WC) 0.06 to 0.6, SPDT Switch Type, Pressure Setting Range (In....More

  • Differential Air Pressure Switch
    Differential Air Pressure Switch
    • JOHNSON CONTROLS
    • Item # 40G363
    • Mfr. Model # P32AC-2C
    • Differential Air Pressure Switch, HVAC/General Purpose, Differential (In. WC) .045 To .195, SPDT Switch Type,...More

  • Pressure Switch,Differential,0.12to1.6In
    Pressure Switch,Differential,0.12to1.6In
    • DWYER INSTRUMENTS
    • Item # 4FTN9
    • Mfr. Model # ADPS-04-2-N
    • Pressure Switch, Differential, Pressure Setting Range (In. WC) 0.12 to 1.6 In. WC, Sample Line Connector 1/4...More

  • Differential Air Pressure Switch
    Differential Air Pressure Switch
    • JOHNSON CONTROLS
    • Item # 40G365
    • Mfr. Model # P32AF-1C
    • Differential Air Pressure Switch, HVAC/General Purpose, Differential (In. WC) .018 To .120, SPDT Switch Type,...More

  • Differential Air Pressure Switch
    Differential Air Pressure Switch
    • JOHNSON CONTROLS
    • Item # 40G350
    • Mfr. Model # P233A-4-PAC
    • Differential Air Pressure Switch, HVAC/General Purpose, Differential (In. WC) 0.1, SPDT Switch Type, Pressure...More

  • Air Sensing Switch,Manual Reset,SPST
    Air Sensing Switch,Manual Reset,SPST
    • SIEMENS
    • Item # 40PN37
    • Mfr. Model # 141-0575
    • Air Sensing Switch, Manual Reset, Differential (In. WC) 0.06 to 0.6, SPST Switch Type, Pressure Setting Range...More

  • Pressure Sensing Switch,Adjustable
    Pressure Sensing Switch,Adjustable
    • TJERNLUND
    • Item # 14U189
    • Mfr. Model # PS2501
    • Pressure Sensing Switch, HVAC/General Purpose, Differential (In. WC) .02, SPDT Switch Type, Pressure Setting...More

  • Switch,Dryer Boosting
    Switch,Dryer Boosting
    • FANTECH
    • Item # 4YM38
    • Mfr. Model # DB10
    • Air Sensing Switch, Pressure Sensing Switch Kit, Differential (In. WC) -, - Switch Type, Pressure Setting...More

  • Switch,Fan Proving
    Switch,Fan Proving
    • TJERNLUND
    • Item # 4C725
    • Mfr. Model # PS1505
    • Air Sensing Switch, Flue Exhaust Proving, Differential (In. WC) -, - Switch Type, Pressure Setting Range (In....More

  • Switch,Air Sensing
    Switch,Air Sensing
    • CLEVELAND CONTROLS
    • Item # 3ZM97
    • Mfr. Model # RSS-498-015
    • Air Sensing Switch, HVAC OEM, Differential (In. WC) +/-0.05, SPDT Switch Type, Pressure Setting Range (In....More

  • Pressure Sensing Switch,.25-1.0
    Pressure Sensing Switch,.25-1.0
    • ROBERTSHAW
    • Item # 6XJU0
    • Mfr. Model # 2374-495
    • Pressure Sensing Switch, HVAC/General Purpose, Differential (In. WC) .10, SPDT Switch Type, Pressure Setting...More

  • Switch,Duct Pressure
    Switch,Duct Pressure
    • TJERNLUND
    • Item # 5C968
    • Mfr. Model # PS1503
    • Air Sensing Switch, Duct Pressure Switch, Differential (In. WC) +/- 0.02, SPST Switch Type, Pressure Setting...More

  • Differential Air Pressure Switch
    Differential Air Pressure Switch
    • JOHNSON CONTROLS
    • Item # 40G364
    • Mfr. Model # P32AC-8C
    • Differential Air Pressure Switch, HVAC/General Purpose, Differential (In. WC) .045 To .195, SPDT Switch Type,...More

  • Pressure Switch,.05-2.0
    Pressure Switch,.05-2.0
    • ROBERTSHAW
    • Item # 6XJU4
    • Mfr. Model # 2374-501
    • Pressure Sensing Switch, HVAC/General Purpose, Differential (In. WC) 0.02 to 0.8, SPDT Switch Type, Pressure...More

  • Dif Pressure Switch,Adjustable
    Dif Pressure Switch,Adjustable
    • DWYER INSTRUMENTS
    • Item # 24Z008
    • Mfr. Model # ADPS-08-2-N
    • Differential Pressure Switch, Air, Pressure Setting Range (In. WC) 0.08 to 1.2, Sample Line Connector Barb...More

  • Pressure Sensing Switch,.05-12
    Pressure Sensing Switch,.05-12
    • ROBERTSHAW
    • Item # 6XJU2
    • Mfr. Model # 2374-499
    • Pressure Sensing Switch, HVAC/General Purpose, Differential (In. WC) 0.02 to 0.8, SPDT Switch Type, Pressure...More

  • Differential Air Pressure Switch
    Differential Air Pressure Switch
    • JOHNSON CONTROLS
    • Item # 40G362
    • Mfr. Model # P32AC-1C
    • Differential Air Pressure Switch, HVAC/General Purpose, Differential (In. WC) 0.135 To 0.525, SPDT Switch...More

  • Differential Air Pressure Switch
    Differential Air Pressure Switch
    • JOHNSON CONTROLS
    • Item # 40G366
    • Mfr. Model # P32AF-2C
    • Differential Air Pressure Switch, HVAC/General Purpose, Differential (In. WC) .009 To .075, SPDT Switch Type,...More

  • Pressure Switch,Differential, SPDT
    Pressure Switch,Differential, SPDT
    • JOHNSON CONTROLS
    • Item # 20RG53
    • Mfr. Model # P32AF-13C
    • Pressure Switch, Differential, Differential (In. WC) 0.025, SPDT Switch Type, Pressure Setting Range (In. WC)...More

  • Pressure Switch,Differential,2to 10In WC
    Pressure Switch,Differential,2to 10In WC
    • DWYER INSTRUMENTS
    • Item # 4FTP3
    • Mfr. Model # ADPS-06-2-N
    • Pressure Switch, Differential, Pressure Setting Range (In. WC) 2 to 10 In. WC, Sample Line Connector 1/4 In....More

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Note: Product availability is real-time basis and adjusted continuously. The product will be reserved for you when you complete your order. More