Product Search

    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.

    Filter Results
    Results 1-50 of 851.
    HONEYWELL 445100

    HONEYWELL

    LEEDS & NORTHRUP

    445100

    DISCONTINUED BY MANUFACTURER, OUTPUT BOARD
    ✓ IN STOCK!
    Buy Surplus As Low As $101.72
    $101.72
    Repair Yours $300.00
    HONEYWELL Q674C1058

    HONEYWELL

    Q674C1058

    SWITCH SUB-BASE, T874, OFF/AUTO FAN AUTO/ON
    ✓ IN STOCK!
    $18.33 Buy Surplus As Low As $13.93
    $13.93
    JOHNSON CONTROLS P20DB-1C

    JOHNSON CONTROLS

    PENN BASO

    P20DB-1C

    AIR CONDITIONING/PRESSURE CUTOUT CONTROLRANGE 100-425PSIGMANUAL RESET
    ✓ IN STOCK!
    $143.00 Buy Surplus As Low As $85.80
    $85.80
    UNITED TECHNOLOGIES HK42FZ011

    UNITED TECHNOLOGIES

    CARRIER

    HK42FZ011

    DISCONTINUED BY MANUFACTURER, FURNACE CONTROL, HSCI, 24 VAC INPUT, 465 MA, 60 HZ, 120 VAC LINE, 1012-940
    ✓ IN STOCK!
    Buy Surplus As Low As $499.55
    $499.55
    Repair Yours $399.00
    ASEA BROWN BOVERI P-HA-RPS-FAN03000

    ASEA BROWN BOVERI

    BAILEY CONTROLS

    P-HA-RPS-FAN03000

    DISCONTINUED BY MANUFACTURER, MONITORING AND COOLING SYSTEM, SYMPHONY HARMONY SERIES, 102-265 VAC OR 102-144 VDC, 12.5 A, 47-63 HZ
    ✓ IN STOCK!
    Buy Surplus As Low As $675.00
    $675.00
    Repair Yours $643.00
    AUTOMATED LOGIC S6104

    AUTOMATED LOGIC

    S6104

    DISCONTINUED BY MANUFACTURER, CONTROL MODULE, 20 VA, 24 VAC, SINGLE EQUIPMENT
    ✓ IN STOCK!
    Buy Surplus As Low As $1,804.26
    $1,804.26
    Repair Yours $1,500.00
    DEUBLIN 1690-000-115

    DEUBLIN

    1690-000-115

    ROTATING UNION, LOW-SPEED, 2 WAY PNEUMATIC HYDRAULIC, 1" NPT RH, 1/4" NPT, AIR FLOW MAX - 150 PSI
    ✓ IN STOCK!
    $594.92 Buy Surplus As Low As $373.06
    $373.06
    Repair Yours $312.00
    HONEYWELL 11128

    HONEYWELL

    ECLIPSE COMBUSTION

    11128

    MEDIA, FILTER, FOAM, 20 IN. DIAMETER, 20 PPI, RETICULATED POLYURETHANE
    ✓ IN STOCK!
    $285.00 Buy Surplus As Low As $171.00
    $171.00
    HONEYWELL 14507287-003

    HONEYWELL

    14507287-003

    DISCONTINUED BY MANUFACTURER, POWER SUPPLY, EXTENDED, 120 VAC INPUT, 50VA CONTOLLER TRANSF + 100VA & 24VDC ACCESS TRANSF W/ CONV OUTLET & BREAKER
    ✓ IN STOCK!
    Buy Surplus As Low As $2,100.00
    $2,100.00
    Repair Yours $1,743.00
    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
    HONEYWELL M7284A1012

    HONEYWELL

    M7284A1012

    ACTUATOR, MODUTROL IV MOTOR, NON-SPRING RETURN, FOOT MOUNTED, 4-20 MA MODULATING CONTROL SIGNAL, 160 DEGREE STROKE, 30-60 SECONDS TIMING, 17 NM / 150 LB-IN TORQUE RATING, 15 VA, 120 VAC, 50/ ...
    ✓ IN STOCK!
    $1,698.00 Buy Surplus As Low As $643.73
    $643.73
    Repair Yours $534.30
    HONEYWELL M9184C1031

    HONEYWELL

    M9184C1031

    DAMPER ACTUATOR, MODUTROL IV, 90-160DEG STROKE, 24V, 50/60HZ,150LB IN TORQUE, DUAL ENDED SHAFT, NON-SPRING RETURN, TIME 30/60SEC
    ✓ IN STOCK!
    $2,423.99 Buy Surplus As Low As $1,454.40
    $1,454.40
    Repair Yours $909.00
    HONEYWELL ML6984A1006

    HONEYWELL

    ML6984A1006

    DISCONTINUED BY MANUFACTURER, D-COUPLED VALVE ACTUATOR, 24VAC, 28VDC, 6VA, 7ION
    ✓ IN STOCK!
    Buy Surplus As Low As $311.08
    $311.08
    Repair Yours $300.00
    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 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 RM7824A1006

    HONEYWELL

    RM7824A1006

    DISCONTINUED BY MANUFACTURER, BURNER CONTROL UNIT, 7800 SERIES, RELAY MODULE, INTERMITTENT PILOT TYPE, INTERMITTENT MAIN FLAME ESTABLISHING PERIOD, 4 OR 10 SECOND PILOT FLAME ESTABLISHING PE ...
    ✓ IN STOCK!
    Buy Surplus As Low As $1,050.00
    $1,050.00
    Repair Yours $669.73
    HONEYWELL RM7838C1004

    HONEYWELL

    RM7838C1004

    BURNER CONTROL UNIT, 7800 SERIES, RELAY MODULE, SEMI AUTOMATIC PROGRAMMING CONTROL, KEYBOARD DISPLAY MODULE, LOCKOUT INTERLOCKS, PRE-IGNTION, 10 SECOND MAIN FLAME ESTABLISHING PERIOD INTERMI ...
    ✓ IN STOCK!
    $2,687.29 Buy Surplus As Low As $1,612.37
    $1,612.37
    Repair Yours $990.00
    ALLEN BRADLEY 837-N16

    ALLEN BRADLEY

    837-N16

    TYPE 316 STAINLESS STEEL, DIRECT IMMERSION, 3-1/2 IN. (89MM) THERMOSTAT WELL
    ✓ IN STOCK!
    Buy Surplus As Low As $381.60
    $381.60
    Repair Yours $300.00
    HONEYWELL W973A-1017

    HONEYWELL

    W973A-1017

    DISCONTINUED BY MANUFACTURER,LOGIC PANEL, SINGLE ZONE, 2 HEAT , 2 COOL , 24 VDC , 8 VA
    ✓ IN STOCK!
    Buy Surplus As Low As $1,623.19
    $1,623.19
    Repair Yours $1,445.00
    HONEYWELL XH561

    HONEYWELL

    XH561

    DISCONTINUED BY MANUFACTURER, MODULE HOUSING, XL600, 500 UNIVERSAL, INPUT/OUTPUT
    ✓ IN STOCK!
    Buy Surplus As Low As $99.32
    $99.32
    HONEYWELL 84-20103-301

    HONEYWELL

    84-20103-301

    DISCONTINUED BY MANUFACTURER, RELAY, 24VAC, 50/60HZ , RELAY 250VAC 8FLA 18LRA COIL 24 VDC 50/60HZ
    ✓ IN STOCK!
    Buy Surplus As Low As $54.34
    $54.34
    HONEYWELL M4185B1009

    HONEYWELL

    M4185B1009

    HVAC ACTUATOR, MODUTROL IV MOTOR, SERIES 41, LINE VOLTAGE, 2 POSITION CONTROL, 120 VAC, 60 LB-IN, NORMALLY CLOSED, SPRING RETURN, DUAL-ENDED SHAFT, 1 AUX SWITCH
    ✓ IN STOCK!
    $1,605.68 Buy Surplus As Low As $963.41
    $963.41
    Repair Yours $946.00
    HONEYWELL R7044B1016-3

    HONEYWELL

    R7044B1016-3

    DISCONTINUED BY MANUFACTURER, CONTROLLER MODULE, DELTANET, EXCEL PLUS, HVAC, 24 VAC
    ✓ IN STOCK!
    Buy Surplus As Low As $1,046.23
    $1,046.23
    Repair Yours $860.54
    JOHNSON CONTROLS V47AC-8

    JOHNSON CONTROLS

    V47AC-8

    VALVE, V47 SERIES, 3/4" NPT, 75 TO 135 DEGREES F HEATING POINT RANGE, CAST BRASS DIRECT ACTING TEMPERATURE ACTUATED WATER REGULATING VALVE WITH 6' CAPILLARY
    ✓ IN STOCK!
    $755.72 Buy Surplus As Low As $453.43
    $453.43
    Repair Yours $374.00
    HONEYWELL XL100CU

    HONEYWELL

    XL100CU

    DISCONTINUED BY MANUFACTURER, HVAC CONTROLLER, EXCEL 100C, C-BUS COMMUNICATION, UP TO 30 DEVICES, MODEM / ISDN / GSM, 12 UNIVERSAL INPUTS, 12 DIGITAL INPUTS, 12 UNIVERSAL OUTPUTS, LED INDICA ...
    ✓ IN STOCK!
    Buy Surplus As Low As $3,014.81
    $3,014.81
    Repair Yours $2,400.00
    HONEYWELL M6184D-1035

    HONEYWELL

    M6184D-1035

    DAMPER ACTUATOR, M61 SERIES, FLOATING CONTROL SIGNAL, 24 VAC SUPPLY, 50/60HZ, 90-160 DEGREE ROTATIONAL STROKE, 3/8 INCH SHAFT SIZE
    ✓ IN STOCK!
    $1,341.00 Buy Surplus As Low As $751.91
    $751.91
    Repair Yours $550.00
    HONEYWELL M9185A1018

    HONEYWELL

    M9185A1018

    AC MOTOR, MODUTROL IV, PROPORTIONAL CONTROL, 24 VAC, 50/60 HZ, 135 OHM CONTROL, 60 LB-IN, SPRING RETURN, 30-60 SEC NOMINAL, QUICK CONNECT, 90-160 DEG STROKE, FOOT MOUNT, CW ROTATION, NEMA 3
    ✓ IN STOCK!
    $2,022.00 Buy Surplus As Low As $1,299.53
    $1,299.53
    Repair Yours $790.00
    HONEYWELL ML8185D1005

    HONEYWELL

    ML8185D1005

    DISCONTINUED BY MANUFACTURER, DIRECT COUPLED ACTUATOR, SPRING RETURN, 24 VAC, 50/60 HZ, 12 VA, CLASS 2, 50 LB-IN, REPLACED BY MS8110A1008
    ✓ IN STOCK!
    Buy Surplus As Low As $218.54
    $218.54
    Repair Yours $300.00
    HONEYWELL ML8195A-1007

    HONEYWELL

    ML8195A-1007

    DISCONTINUED BY MANUFACTURER, ACTUATOR, 24VAC, 50/60HZ, 142LB-IN TORQUE
    ✓ IN STOCK!
    Buy Surplus As Low As $355.18
    $355.18
    Repair Yours $300.00
    HONEYWELL R7140G-1000

    HONEYWELL

    R7140G-1000

    UPGRADE REPLACEMENT PROGRAMMING CONTROL FOR R4140G WITH PREIGNITION INTERLOCKS
    ✓ IN STOCK!
    $5,775.00 Buy Surplus As Low As $4,389.00
    $4,389.00
    Repair Yours $2,257.25
    HONEYWELL RM7850A1019

    HONEYWELL

    RM7850A1019

    BURNER CONTROL UNIT, 7800 SERIES, RELAY MODULE, PROGRAMMING CONTROL, INTERRUPTED PILOT TYPE, INTERMITTENT SECOND STAGE PILOT VALVE, USER SELECTABLE AIRFLOW CHECK, 15 SECOND POST PURGE, PRE-I ...
    ✓ IN STOCK!
    $3,740.39 Buy Surplus As Low As $2,244.23
    $2,244.23
    Repair Yours $1,350.00
    HONEYWELL RM7885A1015

    HONEYWELL

    RM7885A1015

    BURNER CONTROL UNIT, 7800 SERIES, RELAY MODULE, DUST COVER, MANUAL START INDUSTRIAL PRIMARY CONTROL, INTERMITTENT PILOT TYPE, INTERMITTENT MAIN FLAME ESTABLISHING PERIOD, 15 MINUTE PILOT FLA ...
    ✓ IN STOCK!
    $990.22 Buy Surplus As Low As $653.55
    $653.55
    Repair Yours $390.00
    HONEYWELL RM7895B1013

    HONEYWELL

    RM7895B1013

    BURNER CONTROL UNIT, 7800 SERIES, RELAY MODULE, DUST COVER, INTERMITTENT PILOT TYPE, DYNAMIC AIRFLOW CHECK, SELECTABLE INTERLOCKS, INTERMITTENT MAIN FLAME ESTABLISHING PERIOD, 4 TO 10 SECOND ...
    ✓ IN STOCK!
    $1,633.77 Buy Surplus As Low As $980.26
    $980.26
    Repair Yours $562.00
    HONEYWELL RM7895C1012

    HONEYWELL

    RM7895C1012

    BURNER CONTROL UNIT, 7800 SERIES, RELAY MODULE, PREPURGE, INTERRUPTED PILOT, 10 SECOND MAIN FLAME ESTABLISHING PERIOD, 4 OR 10 SECOND PILOT FLAME ESTABLISHING PERIOD, DELAYED MAIN VALVE, SEL ...
    ✓ IN STOCK!
    $1,445.00 Buy Surplus As Low As $867.00
    $867.00
    Repair Yours $650.00
    HONEYWELL RM7895C1020

    HONEYWELL

    RM7895C1020

    BURNER CONTROL UNIT, 7800 SERIES, RELAY MODULE, INTERRUPTED PILOT TYPE, DELAYED MAIN VALVE, SPECIAL SEQUENCE EARLY SPARK TERMINATION, SELECTABLE INTERLOCKS, 10 SECOND MAIN FLAME ESTABLISHING ...
    ✓ IN STOCK!
    $1,897.28 Buy Surplus As Low As $1,138.37
    $1,138.37
    Repair Yours $690.00
    HONEYWELL RM7895D1011

    HONEYWELL

    RM7895D1011

    BURNER CONTROL UNIT, 7800 SERIES, RELAY MODULE, INTERRUPTED PILOT TYPE, DELAYED MAIN VALVE, DYNAMIC AIRFLOW CHECK, SELECTABLE INTERLOCKS, 10 SECOND MAIN FLAME ESTABLISHING PERIOD, 4 OR 10 SE ...
    ✓ IN STOCK!
    $1,314.49 Buy Surplus As Low As $792.86
    $792.86
    Repair Yours $654.61
    HONEYWELL RP920B-1031

    HONEYWELL

    RP920B-1031

    PROPORTIONAL PNEUMATIC CONTROLLER, 17-30 PSI OPERATING PRESSURE, 3-15 PSI DUAL INPUT SIGNAL, 40-130 F TEMPERATURE RATING
    ✓ IN STOCK!
    $1,029.33 Buy Surplus As Low As $617.60
    $617.60
    Repair Yours $300.00
    JOHNSON CONTROLS T-5800-3

    JOHNSON CONTROLS

    T-5800-3

    PNEUMATIC RECEIVER CONTROLLER, DUAL INPUT, PROPORTIONAL, DIRECT OR REVERSE ACTING WITH DIRECT OR REVERSE READJUSTMENT ( FIELD SELECTABLE ), GAIN: ADJUSTABLE FROM 0.5:1 TO 15:1 ( FACTORY SET ...
    ✓ IN STOCK!
    $2,330.00 Buy Surplus As Low As $1,398.00
    $1,398.00
    Repair Yours $1,318.00
    AUBURN I-31

    AUBURN

    I-31

    DISCONTINUED BY MANUFACTURER, IGNITOR, SERIES NICKEL ELECTRODE, SEE REPLACEMENT E5-I-31
    ✓ IN STOCK!
    Buy Surplus As Low As $35.02
    $35.02
    AUBURN FRS-4-6

    AUBURN

    FRS-4-6

    DISCONTINUED BY MANUFACTURER, FLAME ROD, 6 INCHES, 1/4 INCH MOUNTING, REPLACED BY E5-FRS-4-6
    ✓ IN STOCK!
    $135.00 Buy Surplus As Low As $81.00
    $81.00
    BUSCH 0993-902-118

    BUSCH

    0993-902-118

    EXHAUST FILTER KIT, 2/BOX, FOR VACUUM PUMP,OPTIMAL ENERGY EFFICIENCY
    ✓ IN STOCK!
    $408.00 Buy Surplus As Low As $245.00
    $245.00
    HONEYWELL 30757215-001

    HONEYWELL

    30757215-001

    DISCONTINUED BY MANUFACTURER, NEMA 4 WEATHER COVER KIT, UPGRADE KIT, BLACK
    ✓ IN STOCK!
    Buy Surplus As Low As $44.47
    $44.47
    HONEYWELL 51400646-100

    HONEYWELL

    MEASUREX

    51400646-100

    DISCONTINUED BY MANUFACTURER, FAN ASSEMBLY, DUAL FAN, FOR 5 SLOT CHASSIS
    ✓ IN STOCK!
    Buy Surplus As Low As $177.74
    $177.74
    Repair Yours $300.00
    HONEYWELL 102546

    HONEYWELL

    102546

    BALL JOINT ASSEMBLY, FOR DAMPER LINKAGES, 5/16 INCH SIZE, 1.7 X 3.7 X .45 INCH, (0808)
    ✓ IN STOCK!
    $45.52 Buy Surplus As Low As $27.31
    $27.31
    HONEYWELL 14003124-002

    HONEYWELL

    14003124-002

    SEAL AND DIAPHRAGM KIT, FOR MP953B D/F, REPLACEMENT FOR ACTUATOR DIAPHRAGM, POLYEURATHANE
    ✓ IN STOCK!
    $269.91 Buy Surplus As Low As $161.95
    $161.95
    HONEYWELL ML7984A-3001

    HONEYWELL

    ML7984A-3001

    DISCONTINUED BY MANUFACTURER, VALVE ACTUATORD COUPLED, DIR/REV ACTING STROKE, 24VAC/28VDC, 0-55C, 19MM/3/4IN
    ✓ IN STOCK!
    Buy Surplus As Low As $737.78
    $737.78
    Repair Yours $648.00
    HONEYWELL Q5001D1000

    HONEYWELL

    Q5001D1000

    VALVE BRACKET AND LINKAGE, 80/160 LBS SELECTABLE STEM FORCE, 3/ 4INCH LIFT, FOR USE W/ MODUTROL MOTORS, USE IF MOTOR TORQUE LESS THAN 50 LB, REPLACES Q618A1032
    ✓ IN STOCK!
    $1,733.00 Buy Surplus As Low As $1,318.00
    $1,318.00
    HONEYWELL RM7888A1019

    HONEYWELL

    RM7888A1019

    BURNER CONTROL UNIT, 7800 SERIES, RELAY MODULE, SELECTABLE PILOT TYPE, 15 SECOND MAIN FLAME ESTABLISHING PERIOD, 4 SECOND PILOT FLAME ESTABLISHING PERIOD, 120 VAC, 50/60 HZ
    ✓ IN STOCK!
    $3,746.65 Buy Surplus As Low As $2,247.99
    $2,247.99
    Repair Yours $1,387.00
    HONEYWELL RM7888A1027

    HONEYWELL

    RM7888A1027

    BURNER CONTROL UNIT, 7800 SERIES, RELAY MODULE, SELECTABLE PILOT TYPE, 15 SECOND MAIN FLAME ESTABLISHING PERIOD, 10 SECOND PILOT FLAME ESTABLISHING PERIOD, 120 VAC, 50/60 HZ
    ✓ IN STOCK!
    $3,951.57 Buy Surplus As Low As $2,370.94
    $2,370.94
    Repair Yours $1,095.00
    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
    Next
    1 2 3 4 5 6 7 8 9 10 11