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    Industrial HVAC Components & Controls

    Enhance climate control efficiency with quality air handlers, actuators, and boiler controls, tailored for reliable HVAC performance in commercial and industrial settings.

    Optimize your HVAC systems with our comprehensive range of high-quality components and controls. Our HVAC selection features air conditioners, air handlers, boiler controls, flame/spark rods, and HVAC actuators to meet your industrial and commercial heating, ventilation, and air conditioning needs. Whether you're maintaining commercial buildings, optimizing industrial HVAC systems, or upgrading climate control in manufacturing facilities, our comprehensive range of HVAC components ensures peak performance and efficiency in your heating, ventilation, and air conditioning applications. Shop now for top-quality HVAC components and systems to optimize your industrial climate control.

    Rockwell Disclaimer: The product is used surplus. Radwell is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because Radwell is not an authorized distributor of this product, the Original Manufacturer’s warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, Radwell makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. Radwell also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. Radwell also makes no representations as to your right to install any such firmware on the product. Radwell will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

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    Results 101-150 of 849.
    JOHNSON CONTROLS P47AA-1

    JOHNSON CONTROLS

    P47AA-1

    0/15# OPEN-HI,SPST,PRESSURE SWITCH
    ✓ IN STOCK!
    $1,035.09 Buy Surplus As Low As $683.16
    $683.16
    MODUS SD-030

    MODUS

    SD-030

    DISCONTINUED BY MANUFACTURER, SURGE DAMPENER, 30 SECOND DELAY
    ✓ IN STOCK!
    Buy Surplus As Low As $21.99
    $21.99
    HONEYWELL M9184D1021

    HONEYWELL

    M9184D1021

    PROPORTIONAL MODUTROL IV MOTOR, 24VAC, 135 OHM CNTRL SIG, NON SPRING RET, 150LB-IN TORQUE, 30-60 SEC NOMINAL TIMING, 90-160DEG STROKE, 160DEG FACTORY STROKE SETTING, FOOT MOUNTED, DUAL ENDED ...
    ✓ IN STOCK!
    $1,747.00 Buy Surplus As Low As $1,013.09
    $1,013.09
    Repair Yours $909.00
    HONEYWELL M7284A1004

    HONEYWELL

    M7284A1004

    ACTUATOR, MODUTROL IV MOTOR, NON-SPRING RETURN, FOOT MOUNTED, 4-20 MA MODULATING CONTROL SIGNAL, 90 DEGREE STROKE, 30-60 SECONDS TIMING, 17 NM / 150 LB-IN TORQUE RATING, 15 VA, 120 VAC, 50/6 ...
    ✓ IN STOCK!
    $2,281.00 Buy Surplus As Low As $901.55
    $901.55
    Repair Yours $344.71
    HONEYWELL C7031J-1050

    HONEYWELL

    C7031J-1050

    DISCONTINUED BY MANUFACTURER, AVERAGING ELEMENT, DUCT SENSOR, ELECTRONIC CIRCUIT, LENGTH 12 INCH, RANGE: 40-180 DEGREES F
    ✓ IN STOCK!
    Buy Surplus As Low As $114.69
    $114.69
    HONEYWELL S427D-1007

    HONEYWELL

    S427D-1007

    DISCONTINUED BY MANUFACTURER, PLUG IN PURGE TIMER, 2-15MIN RANGE, 120VAC, 60HZ, SPST SWITCHING
    ✓ IN STOCK!
    Buy Surplus As Low As $165.00
    $165.00
    Repair Yours $300.00
    HONEYWELL RM7890A1015

    HONEYWELL

    RM7890A1015

    BURNER CONTROL UNIT, 7800 SERIES, RELAY MODULE, DUST COVER, INTERMITTENT PILOT, INTERMITTENT MAIN FLAME ESTABLISHING PERIOD, 4 OR 10 SECOND PILOT FLAME ESTABLISHING PERIOD, NONVOLATILE MEMOR ...
    ✓ IN STOCK!
    $1,299.89 Buy Surplus As Low As $779.93
    $779.93
    Repair Yours $431.00
    HONEYWELL RM7840G1014

    HONEYWELL

    RM7840G1014

    BURNER CONTROL UNIT, 7800 SERIES, RELAY MODULE, PROGRAMMING MODULE, INTERRUPTED PILOT TYPE, SELECTABLE SECOND STAGE PILOT VALVE, USER SELECTABLE AIRFLOW CHECK, 5 SECOND EARLY SPARK TERMINATI ...
    ✓ IN STOCK!
    $4,407.14 Buy Surplus As Low As $2,644.28
    $2,644.28
    Repair Yours $1,068.21
    HONEYWELL RM7838B1013

    HONEYWELL

    RM7838B1013

    BURNER CONTROL UNIT, 7800 SERIES, RELAY MODULE, KEYBOARD DISPLAY MODULE, SELECTABLE INTERMITTENT OR INTERRUPTED PILOT, PULOT VALVE HOLD, MANUAL OPEN SWITCH, 120 V, 50/60 HZ
    ✓ IN STOCK!
    $3,127.66 Buy Surplus As Low As $1,876.59
    $1,876.59
    Repair Yours $1,509.00
    HONEYWELL RM7838A1014

    HONEYWELL

    RM7838A1014

    BURNER CONTROL UNIT, 7800 SERIES, RELAY MODULE, KEYBOARD DISPLAY MODULE, RUNNING INTERLOCKS, PRE-PURGE DETERMINED BY ST7800A PURGE TIMER CARD, INTERMITTENT PILOT TYPE, 120 V, 50/60 HZ
    ✓ IN STOCK!
    $3,969.33 Buy Surplus As Low As $2,381.60
    $2,381.60
    Repair Yours $850.00
    HONEYWELL RM7823A1016

    HONEYWELL

    RM7823A1016

    BURNER CONTROL UNIT, 7800 SERIES, FLAME SWITCH, 2X SPDT RELAYS, 120 VAC, 50/60 HZ
    ✓ IN STOCK!
    $898.87 Buy Surplus As Low As $539.32
    $539.32
    Repair Yours $390.00
    HONEYWELL 51401496-100

    HONEYWELL

    MEASUREX

    51401496-100

    DISCONTINUED BY MANUFACTURER, FAN ASSEMBLY, DUAL NODE
    ✓ IN STOCK!
    Buy Surplus As Low As $188.72
    $188.72
    Repair Yours $300.00
    HONEYWELL 51198831-100

    HONEYWELL

    MEASUREX

    51198831-100

    DISCONTINUED BY MANUFACTURER, COMMUNICATION MODULE, TDC2000, PWA HIGHWAY
    ✓ IN STOCK!
    Buy Surplus As Low As $16,972.89
    $16,972.89
    Repair Yours $11,000.00
    FOODLINE PIPING SFA10

    FOODLINE PIPING

    SFA10

    DISCONTINUED BY MANUFACTURER, FILTER, 10X10X6
    ✓ IN STOCK!
    Buy Surplus As Low As $189.45
    $189.45
    HAMLIN 57135-000

    HAMLIN

    57135-000

    MAGNETIC SENSOR, 59135 SERIES, 28.6MM X 6.40MM X 19.0MM, PLASTIC, FLANGE MOUNT
    ✓ IN STOCK!
    $3.53 Buy Surplus As Low As $0.90
    $0.90
    HANKISON RDMK1

    HANKISON

    RDMK1

    MAINTENANCE KIT, AIR DRYER SERVICE KIT, 5-10 CFM
    ✓ IN STOCK!
    $443.47 Buy Surplus As Low As $337.03
    $337.03
    ALLEN BRADLEY 837-N6

    ALLEN BRADLEY

    837-N6

    THERMOSTAT WELL, ELECTROMECHANICAL, TEMPERATURE SWITCH ACCESSORY, BRASS, REMOTE STANDARD CAPILLARY, 8.5 IN BULB SIZE, EXTERNAL PRESSURE RATING 1000 PSI AT +600F MAXIMUM
    ✓ IN STOCK!
    Buy Surplus As Low As $186.00
    $186.00
    JOHNSON CONTROLS XT-9100-8304

    JOHNSON CONTROLS

    METASYS

    XT-9100-8304

    DISCONTINUED BY MANUFACTURER, EXTENSION MODULE, MODEL XT9100, I/O 0-10 V, LED STATUS INDICATOR, 24 VAC SUPPLY, CONNECTS XP TO DX MODULE
    ✓ IN STOCK!
    Buy Surplus As Low As $216.30
    $216.30
    Repair Yours $200.00
    HONEYWELL RM7895A1014

    HONEYWELL

    RM7895A1014

    BURNER CONTROL UNIT, 7800 SERIES, RELAY MODULE, INTERMITTENT PILOT TYPE, SELECTABLE INTERLOCKS, INTERMITTENT MAIN FLAME ESTABLISHING PERIOD, 4 TO 10 SECOND PILOT FLAME ESTABLISHING PERIOD, 1 ...
    ✓ IN STOCK!
    $1,505.90 Buy Surplus As Low As $903.54
    $903.54
    Repair Yours $550.00
    HONEYWELL RM7800L1012

    HONEYWELL

    RM7800L1012

    BURNER CONTROL UNIT, 7800 SERIES, RELAY MODULE, KEYBOARD DISPLAY MODULE, PRE-IGNITION, LOCKOUT, LOW AND HIGH FIRE INTERLOCKS, 120 VAC, 50/60 HZ
    ✓ IN STOCK!
    $5,089.00 Buy Surplus As Low As $3,053.40
    $3,053.40
    Repair Yours $1,095.00
    HONEYWELL RA890G1229

    HONEYWELL

    RA890G1229

    20 VAC PROTECTORELAY W/ 0.8 SECOND FFTR (15 SAFETY SWITCH TIMING)
    ✓ IN STOCK!
    $6,621.00 Buy Surplus As Low As $3,433.65
    $3,433.65
    Repair Yours $790.00
    HONEYWELL M436A1116

    HONEYWELL

    M436A1116

    DAMPER ACTUATOR, REMOTE MOUNT, SPRING RETURN, DOUBLE ENDED, HEXAGONAL SHAFT TYPE, SPST SWITCH TYPE, 20 IN-LB TORQUE, 120 VAC, 28 W, REPLACES M436A1090
    ✓ IN STOCK!
    $923.00 Buy Surplus As Low As $559.00
    $559.00
    Repair Yours $464.00
    AUTOMATED LOGIC M0320

    AUTOMATED LOGIC

    M0320

    DISCONTINUED BY MANUFACTURER, CONTROL MODULE, 24VAC, 50-60HZ, 35VA
    ✓ IN STOCK!
    Buy Surplus As Low As $1,098.50
    $1,098.50
    HONEYWELL W7750C-2001

    HONEYWELL

    W7750C-2001

    DISCONTINUED BY MANUFACTURER, CONTROLLER, CVAHU, EXCEL 10, W/3 ANALOG, 5 HIGH SIDE TRIAC OUTPUTS, 24 VAC, 50/60 HZ, 3 ANALOG OUTPUTS 4-20MA
    ✓ IN STOCK!
    Buy Surplus As Low As $1,323.14
    $1,323.14
    Repair Yours $1,091.87
    SIEMENS 587-175

    SIEMENS

    STAEFA CONTROL SYS

    587-175

    DISCONTINUED BY MANUFACTURER, WIRING BASE, PREDATOR AHU, 4 INPUTS, 6 DIGITAL OUTPUTS, 1 ROOM SENSOR PORT, 5 INPUTS, 8 DIGITAL OUTPUTS, 2 ANALOG OUTPUTS, 1 ROOM SENSOR PORT, 24 VAC @ 50/60 HZ
    ✓ IN STOCK!
    Buy Surplus As Low As $50.98
    $50.98
    HAMMOND MANUFACTURING XPFA120CG

    HAMMOND MANUFACTURING

    XPFA120CG

    FILTER FAN GRILL, 5.91INX5.91IN; ENCLOSURE MATERIAL:ABS (ACRYLONITRILE BUTADIENE STYRENE); BODY COLOR:BEIGE, GREY; FOR USE WITH:4.7SQUARE F,(PRICE/EA)
    ✓ IN STOCK!
    $40.17 Buy Surplus As Low As $17.75
    $17.75
    HONEYWELL 30362481-018

    HONEYWELL

    30362481-018

    DISCONTINUED BY MANUFACTURER, MOTOR, 120VAC, 180RPM
    ✓ IN STOCK!
    Buy Surplus As Low As $210.00
    $210.00
    Repair Yours $300.00
    EMERSON SFD-13-S7-VV

    EMERSON

    ALCO CONTROLS

    SFD-13-S7-VV

    FILTER DRYER SUCTION LINE 7/8INCH IN/OUT ODF
    ✓ IN STOCK!
    $61.20 Buy Surplus As Low As $26.10
    $26.10
    MITSUBISHI FX1N-14MT-ESS/UL

    MITSUBISHI

    FX1N-14MT-ESS/UL

    DISCONTINUED BY MANUFACTURER,INPUT/OUTPUT MODULE, PROGRAMMABLE LOGIC CONTROLLER, PLC, AC BASE UNIT14DC IN/10 TRANS OUT
    ✓ IN STOCK!
    Buy Surplus As Low As $286.94
    $286.94
    Repair Yours $300.00
    STEVECO 96-TD083S

    STEVECO

    96-TD083S

    DISCONTINUED BY MANUFACTURER, FILTER DRIER / LIQUID LINE, 3/8 ODF, 5.43 X 2.5 INCH
    ✓ IN STOCK!
    Buy Surplus As Low As $5.51
    $5.51
    SIEMENS PTM6.2Y420

    SIEMENS

    LANDIS & GYR

    PTM6.2Y420

    DISCONTINUED BY MANUFACTURER, ANALOG OUTPUT MODUL, POINT TERMINATION MODULE, W/TERMINATION BLOCK,4-20MA,
    ✓ IN STOCK!
    Buy Surplus As Low As $235.27
    $235.27
    Repair Yours $300.00
    MAXITROL P14A0318368

    MAXITROL

    PAKTRONICS

    P14A0318368

    ROTARY CONTROL MODULE 7BLADE 80890209
    ✓ IN STOCK!
    Buy Surplus As Low As $190.72
    $190.72
    Repair Yours $300.00
    JOHNSON CONTROLS D-9502-8

    JOHNSON CONTROLS

    D-9502-8

    POSITIONER KIT, PNEUMATIC, PROPORTIONAL PILOT, 2-12 PSI
    ✓ IN STOCK!
    $448.35 Buy Surplus As Low As $295.91
    $295.91
    Repair Yours $300.00
    JOHNSON CONTROLS AS-AHU103-300

    JOHNSON CONTROLS

    METASYS

    AS-AHU103-300

    DISCONTINUED BY MANUFACTURER, DIGITAL CONTROLLER, AIR HANDLER UNIT TERMINATION BOARD, 120 VAC, 50/60 HZ
    ✓ IN STOCK!
    Buy Surplus As Low As $1,689.57
    $1,689.57
    Repair Yours $1,683.64
    HONEYWELL C7600C-1008

    HONEYWELL

    C7600C-1008

    DISCONTINUED BY MANUFACTURER, HUMIDITY SENSOR, DUCT MOUNT, 4-20MA
    ✓ IN STOCK!
    Buy Surplus As Low As $48.45
    $48.45
    HONEYWELL Q601E-1000

    HONEYWELL

    Q601E-1000

    ACTUATOR, VALVE BRACKET, LINKAGE MODUTROL, ADJ 3/8-1-1/2IN
    ✓ IN STOCK!
    Buy Surplus As Low As $453.08
    $453.08
    Repair Yours $370.00
    HONEYWELL MP918B-1030

    HONEYWELL

    MP918B-1030

    ACTUATOR, 3-13 PSI, NO MOUNT BRACKETS INCL
    ✓ IN STOCK!
    $838.00 Buy Surplus As Low As $440.53
    $440.53
    Repair Yours $300.00
    HONEYWELL MP909E-1067

    HONEYWELL

    MP909E-1067

    MEDIUM FORCE DAMPER ACTUATOR W/ SPRING RETURN ,FOR VARIABLE VOLUME TERMINAL UNITS, (5 TO 10 PSI)
    ✓ IN STOCK!
    $796.00 Buy Surplus As Low As $526.00
    $526.00
    Repair Yours $300.00
    HONEYWELL L4064K-1014

    HONEYWELL

    L4064K-1014

    DISCONTINUED BY MANUFACTURER, CONTROLLER, LIMIT/FAN, 24-277 VAC, SPST, 100-350 DEG F SETPOINT RANGE, 11.5 INCH BULB, FLUSH MOUNT, SAFETY SWITCH
    ✓ IN STOCK!
    Buy Surplus As Low As $170.00
    $170.00
    HONEYWELL HP971A-1008

    HONEYWELL

    HP971A-1008

    SPACE HUMIDITY SENSOR, PNEUMATIC, DIRECT ACTING, 15-75 PERCENT RELATIVE HUMIDITY
    ✓ IN STOCK!
    $1,179.90 Buy Surplus As Low As $707.94
    $707.94
    HONEYWELL XL500

    HONEYWELL

    XL500

    DISCONTINUED BY MANUFACTURER, CONTROL SYSTEM, EXCEL 500, 4 SLOT, 40 VA MAX, 24 VAC, 50/60 HZ
    ✓ IN STOCK!
    Buy Surplus As Low As $45.41
    $45.41
    HONEYWELL W7751D2008

    HONEYWELL

    W7751D2008

    DISCONTINUED BY MANUFACTURER, VARIABLE AIR VOLUME CONTROLLER, FIELD WIRING 14 TO 22 AWG, 24 V AC, 50/60 HZ, 10 VA, 0 TO 0.5 KPA, REPLACED BY W7751D2016
    ✓ IN STOCK!
    Buy Surplus As Low As $293.49
    $293.49
    Repair Yours $300.00
    FORNEY 317017-01

    FORNEY

    317017-01

    PC BOARD, AFS CONTROL SYS, BURNER MGMT SYS, BASE BOARD: AFS-CIS-03
    ✓ IN STOCK!
    $727.16 Buy Surplus As Low As $559.35
    $559.35
    Repair Yours $417.83
    SMC XT17-6-14R

    SMC

    XT17-6-14R

    AIR SUPPLY, 1.0 MAX PRESSURE
    ✓ IN STOCK!
    $537.00 Buy Surplus As Low As $355.00
    $355.00
    Repair Yours $300.00
    SMC ISA11-1L-01BG

    SMC

    ISA11-1L-01BG

    DISCONTINUED BY MANUFACTURER, AIR CATCH SENSOR, KIT/ACCESSORY, BRKT & GAUGE
    ✓ IN STOCK!
    Buy Surplus As Low As $87.99
    $87.99
    SMC AMG-EL250

    SMC

    AMG-EL250

    ELEMENT ASSEMBLY, PNEUMATIC AIR DRYER, +60DEG C +5DEG C, AMG250C SERIES
    ✓ IN STOCK!
    $39.00 Buy Surplus As Low As $20.60
    $20.60
    SMC AMP220-N02-T

    SMC

    AMP220-N02-T

    EXHAUST CLEANER, AMP SERIES, 1/4 STANDARD BODY SIZE, 2-STAGE, NPT THREAD TYPE, 1/4 PORT SIZE, WITH ELEMENT SERVICE INDICATOR, CLEAN ROOM APPLICATION
    ✓ IN STOCK!
    $271.00 Buy Surplus As Low As $179.00
    $179.00
    Repair Yours $300.00
    SMC AMC520-04B

    SMC

    AMC520-04B

    AMC EXHAUST CLEANER, AMC 1/2INCH STANDARD (PT), EXHAUST CLEANER
    ✓ IN STOCK!
    $87.00 Buy Surplus As Low As $53.00
    $53.00
    Repair Yours $300.00
    SMC AMC520-04

    SMC

    AMC520-04

    AMC EXHAUST CLEANER, AMC 1/2INCH STANDARD (PT), EXHAUST CLEANER
    ✓ IN STOCK!
    $80.00 Buy Surplus As Low As $53.00
    $53.00
    Repair Yours $300.00
    SMC AMC510-N06B

    SMC

    AMC510-N06B

    AMC EXHAUST CLEANER, AMC 3/4INCH STANDARD (PT), EXHAUST CLEANER, MUFFLER
    ✓ IN STOCK!
    $89.00 Buy Surplus As Low As $45.87
    $45.87
    Repair Yours $300.00
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