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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.

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    Results 151-200 of 853.
    HONEYWELL 51401286-100

    HONEYWELL

    MEASUREX

    51401286-100

    DISCONTINUED BY MANUFACTURER, PC BOARD, ENHANCED PERIPHERAL DISPLAY GENERATOR, FOR UNIVERSAL STATION NODES, SCSI CONTROL
    ✓ IN STOCK!
    Buy Surplus As Low As $2,240.70
    $2,240.70
    Repair Yours $1,490.00
    HONEYWELL W973J-1017

    HONEYWELL

    W973J-1017

    DISCONTINUED BY MANUFACTURER, LOGIC PANEL, 24V, FOR SINGLE ZONE A/C SYSTEM, SOLID STATE LOGIC PANEL, NO REPLACEMENT
    ✓ IN STOCK!
    Buy Surplus As Low As $2,295.57
    $2,295.57
    Repair Yours $732.74
    HONEYWELL W973E1005

    HONEYWELL

    W973E1005

    DISCONTINUED BY MANUFACTURER, , LOGIC PANEL, USE WITH T7067 AND Q667, STAGES 0 HEAT/4 COOL
    ✓ IN STOCK!
    Buy Surplus As Low As $1,302.99
    $1,302.99
    HONEYWELL RM7840E1016

    HONEYWELL

    RM7840E1016

    BURNER CONTROL UNIT, 7800 SERIES, RELAY MODULE, PROGRAMMING CONTROL, DUST COVER, INTERRUPTED PILOT TYPE, INTERRUPTED SECOND STAGE PILOT VALVE, USER SELECTABLE AIRFLOW CHECK, 5 SECOND EARLY S ...
    ✓ IN STOCK!
    $4,620.00 Buy Surplus As Low As $2,772.00
    $2,772.00
    Repair Yours $990.00
    ROBERTSHAW DMS-35

    ROBERTSHAW

    DMS-35

    DISCONTINUED BY MANUFACTURER, SYSTEM CONTROLLER, DIGITAL DISPLAY, 120 V
    ✓ IN STOCK!
    Buy Surplus As Low As $677.14
    $677.14
    Repair Yours $604.33
    HONEYWELL XL-100B2

    HONEYWELL

    XL-100B2

    DISCONTINUED BY MANUFACTURER, HVAC CONTROL MODULE, 24 VAC, 47-63 HZ MAX, 20 VA, 18 W, IP30
    ✓ IN STOCK!
    Buy Surplus As Low As $2,748.52
    $2,748.52
    SIEMENS 547-003

    SIEMENS

    LANDIS & GYR

    547-003

    DISCONTINUED BY MANUFACTURER, REMOTE PRESSURE TRANSMITTER, MEASURES AIR PRESSURE BETWEEN A ROOM AND AN ADJACENT SPACE, REMOTE PRESSURE TRANSMITTER AND INSIDE COVER ASSEMBLY, OUTSIDE COVER AS ...
    ✓ IN STOCK!
    Buy Surplus As Low As $862.41
    $862.41
    Repair Yours $450.00
    SIEMENS 547-002

    SIEMENS

    LANDIS & GYR

    547-002

    DISCONTINUED BY MANUFACTURER, DIFFERENTIAL PRESSURE MONITOR, 18-28 VAC, 50/60 HZ
    ✓ IN STOCK!
    Buy Surplus As Low As $726.55
    $726.55
    Repair Yours $490.00
    SIEMENS 549-215

    SIEMENS

    LANDIS & GYR

    549-215

    DISCONTINUED BY MANUFACTURER, EXPANSION MODULE, MEC ANALOG, W/HOA 4AI, 4AO, 24V AC, 25 VA MAX
    ✓ IN STOCK!
    Buy Surplus As Low As $715.97
    $715.97
    Repair Yours $536.90
    ALERTON TX-653P

    ALERTON

    TX-653P

    DISCONTINUED BY MANUFACTURER, CONTROLLER, PROGRAMMABLE, 6 DIGITAL INPUT, 5 DIGITAL / 3 ANALOG OUTPUT, 10 VA, 0.5 AMP, 24 VAC, 150 MA / 24 VAC POWER SUPPLY, W/ 8-10 BIT RESOLUTION
    ✓ IN STOCK!
    Buy Surplus As Low As $561.77
    $561.77
    Repair Yours $600.00
    ALERTON APEX

    ALERTON

    APEX

    DISCONTINUED BY MANUFACTURER, CONTROLLER, STAND-ALONE, HIGH PERFORMANCE
    ✓ IN STOCK!
    Buy Surplus As Low As $783.50
    $783.50
    Repair Yours $750.00
    HONEYWELL EXCEL-100-B

    HONEYWELL

    EXCEL-100-B

    DISCONTINUED BY MANUFACTURER, CONTROLLER, 24 VAC, HVAC CONTROL, 18 WATT, 46-60 HZ
    ✓ IN STOCK!
    Buy Surplus As Low As $3,315.00
    $3,315.00
    Repair Yours $2,751.45
    JOHNSON CONTROLS AS-UNT141-1

    JOHNSON CONTROLS

    METASYS

    AS-UNT141-1

    DISCONTINUED BY MANUFACTURER, HVAC UNITARY CONTROL MODULE, 24 VAC, 2 AMP
    ✓ IN STOCK!
    Buy Surplus As Low As $617.04
    $617.04
    Repair Yours $480.00
    ALERTON TX-VAV

    ALERTON

    TX-VAV

    DISCONTINUED BY MANUFACTURER, HVAC CONTROLLER, IBEX, TERMINAL UNIT, V1.29, 24 V AC, 50 VA, 3 INPUTS, W/ 8-BIT RESOLUTION, 5 OUTPUTS, RATED 24 V AC, 0.5 AMP MAX, W/ ONBOARD VELOCITY TRANSDUCE ...
    ✓ IN STOCK!
    $1,176.46 Buy Surplus As Low As $726.65
    $726.65
    Repair Yours $640.00
    HONEYWELL RM7890B1048

    HONEYWELL

    RM7890B1048

    BURNER CONTROL UNIT, 7800 SERIES, RELAY MODULE, DUST COVER, INTERMITTENT PILOT, FIXED 4 OR 10 SECOND PILOT FLAME ESTABLISHING PERIOD, INTERMITTENT MAIN FLAME ESTABLISHING PERIOD, NONVOLATILE ...
    ✓ IN STOCK!
    $1,074.83 Buy Surplus As Low As $677.15
    $677.15
    Repair Yours $468.00
    SIEMENS LFL1.635

    SIEMENS

    LFL1.635

    GAS BURNER CONTROL, W/OUT PLUG-IN BASE, TS MAX = 2.5 S (5S) 5S, 220-240 VAC, 50-60 HZ, 3.5 VA, 60 SEC PURGE
    ✓ IN STOCK!
    $2,121.00 Buy Surplus As Low As $662.05
    $662.05
    Repair Yours $518.15
    SIEMENS LFL1.335

    SIEMENS

    LANDIS & GYR

    LFL1.335

    GAS BURNER CONTROL, 220 -240 VAC, 50 - 60 HZ, 3.5 VA, T1=37S, TSA=2.5S, T9=5S
    ✓ IN STOCK!
    $1,479.00 Buy Surplus As Low As $925.00
    $925.00
    Repair Yours $300.00
    HONEYWELL RA890G-1286

    HONEYWELL

    RA890G-1286

    DISCONTINUED BY MANUFACTURER, PROTECTORELAY, FLAME SAFETY, FLAME CONTROL, 15 SEC /3 MIN, 240 VAC
    ✓ IN STOCK!
    Buy Surplus As Low As $1,298.86
    $1,298.86
    Repair Yours $600.00
    SIEMENS 6SN1162-0BA02-0AA2

    SIEMENS

    6SN1162-0BA02-0AA2

    DISCONTINUED BY MANUFACTURER, RADIAL BLOWER, SIMODRIVE 611, BUILT-ON FAN, FOR 300 MM MODULES, INTERIOR/EXTERIOR COOLING, UL DESIGN
    ✓ IN STOCK!
    $2,124.00 Buy Surplus As Low As $1,290.00
    $1,290.00
    Repair Yours $925.00
    SIEMENS 6ES74081TA007AA0

    SIEMENS

    6ES74081TA007AA0

    DUST FILTER(10PC)FAN S.ASSEMBL
    ✓ IN STOCK!
    $2,528.00 Buy Surplus As Low As $1,669.00
    $1,669.00
    JOHNSON CONTROLS P47AA-1

    JOHNSON CONTROLS

    P47AA-1

    0/15# OPEN-HI,SPST,PRESSURE SWITCH
    ✓ IN STOCK!
    $807.39 Buy New $807.39
    $532.88
    SIEMENS 6SL3362-0AG00-0AA1

    SIEMENS

    6SL3362-0AG00-0AA1

    FAN ASSEMBLY, REPLACEMENT PART, SINAMICS / MICROMASTER PX, FRAME SIZES G / H / J, 0.69-1.05 KW, 1360-1440 RPM, 3 AMP, SINGLE PHASE, 230/400 VAC, 50/60 HZ
    ✓ IN STOCK!
    $4,549.00 Buy Surplus As Low As $1,823.85
    $1,823.85
    Repair Yours $1,216.00
    RITTAL 3328500

    RITTAL

    3328500

    (SK 3328.500), COOLING UNIT, TOPTHERM BLUE E, 8735 BTU, 230 VAC, 50/60 HZ, UL TYPE 12, WALL MOUNTING, COMFORT CONTROLLER, RAL 7035, NANOCOATED CONDENSER
    ✓ IN STOCK!
    $5,994.45 Buy New $5,994.45
    $3,896.39
    RITTAL 3327607

    RITTAL

    3327607

    DISCONTINUED BY MANUFACTURER, EMC FILTER FAN, 423 CFM, 230 VAC, 50/60 HZ, (SUGGESTED REPLACEMENT: 3244.600)
    ✓ IN STOCK!
    Buy Surplus As Low As $634.89
    $634.89
    Repair Yours $660.02
    MAXITROL 210EZ-2

    MAXITROL

    210EZ-2

    2" ZERO GOVERNOR REGULATOR, 5# MAX
    ✓ IN STOCK!
    $1,380.29 Buy Surplus As Low As $828.18
    $828.18
    MAXITROL 210EZ-1 1/2

    MAXITROL

    210EZ-1 1/2

    GAS REGULATOR,5PSIG MAX, 1.5IN X 1.5IN, 120 KPA PRESSURE DROP
    ✓ IN STOCK!
    $1,380.29 Buy Surplus As Low As $828.18
    $828.18
    HONEYWELL Q605D1069

    HONEYWELL

    Q605D1069

    DAMPER LINKAGE, 1/2", FROM MODUTROL MOTOR TO WATER/STEAM VALVE
    ✓ IN STOCK!
    $1,109.08 Buy Surplus As Low As $842.90
    $842.90
    JOHNSON CONTROLS T-3300-1

    JOHNSON CONTROLS

    T-3300-1

    PROPORTIONAL PNEUMATIC THERMOSTAT. BULB ELEMENTEXT SETPOINT ADJ. REMOTE MOUNTING DUAL TEMP/PRESS. DA@15PSIG REV@20PSIG
    ✓ IN STOCK!
    $1,027.66 Buy New $1,027.66
    $781.02
    JOHNSON CONTROLS D-3153-20

    JOHNSON CONTROLS

    D-3153-20

    PNEUMATIC DAMPER ACTUATOR, 8-13 PSI SPRING RANGE, INCLUDES AUXILIARY MOUNTING BRACKET, 3" STROKE, 0-20 PSIG CONTROL AIR PRESSURE, 1/8" NPT STRAIGHT BARBED FITTING AIR CONNECTION, 15" DIAPHRA ...
    ✓ IN STOCK!
    $1,102.67 Buy New $1,102.67
    $1,215.72
    Repair Yours $390.00
    SIEMENS 091-60210-44

    SIEMENS

    STAEFA CONTROL SYS

    091-60210-44

    DISCONTINUED BY MANUFACTURER, CONTROLLER, SMART 2, HEAT PUMP, 4 IN, 6 DO
    ✓ IN STOCK!
    Buy Surplus As Low As $882.59
    $882.59
    Repair Yours $963.88
    CONAIR 107-213-01

    CONAIR

    107-213-01

    DISCONTINUED BY MANUFACTURER, I/O BOARD ASSEMBLY, TRIAC, LED INDICATORS, COMPU-DRY CD DRYER
    ✓ IN STOCK!
    Buy Surplus As Low As $588.27
    $588.27
    Repair Yours $600.00
    AUTOMATED LOGIC M0320

    AUTOMATED LOGIC

    M0320

    DISCONTINUED BY MANUFACTURER, CONTROL MODULE, 24VAC, 50-60HZ, 35VA
    ✓ IN STOCK!
    Buy Surplus As Low As $864.00
    $864.00
    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 $1,604.64
    $1,604.64
    Repair Yours $1,091.87
    SIEMENS 545-715

    SIEMENS

    LANDIS & GYR

    545-715

    DISCONTINUED BY MANUFACTURER, CONTROL MODULE, PROTOCOL 2, OPEN PROCESSOR, 4 MB MEMORY, RACK MOUNT
    ✓ IN STOCK!
    Buy Surplus As Low As $520.20
    $520.20
    Repair Yours $435.75
    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 RM7890B1030

    HONEYWELL

    RM7890B1030

    BURNER CONTROL UNIT, 7800 SERIES, RELAY MODULE, INTERMITTENT PILOT TYPE, INTERMITTENT MAIN FLAME ESTABLISHING PERIOD, FIXED 4 OR 10 SECOND PFEP PILOT FLAME ESTABLISHING PERIOD, 120 VAC, 50/6 ...
    ✓ IN STOCK!
    $972.50 Buy Surplus As Low As $612.68
    $612.68
    Repair Yours $390.00
    ALERTON TX-MQ-WSHP

    ALERTON

    TX-MQ-WSHP

    DISCONTINUED BY MANUFACTURER PROGRAMMABLE CONTROLLER, 24 V AC, 0.5 AMP MAX, 10-70 VA, 4-20 MA
    ✓ IN STOCK!
    Buy Surplus As Low As $1,118.96
    $1,118.96
    Repair Yours $980.00
    HONEYWELL PVL6436A

    HONEYWELL

    PVL6436A

    DISCONTINUED BY MANUFACTURER, CONTROLLER, VAV, PROGRAMMABLE, LONWORKS COMMUNICATIONS, W/ACTUATOR
    ✓ IN STOCK!
    Buy Surplus As Low As $1,848.96
    $1,848.96
    Repair Yours $1,538.28
    HONEYWELL W7101A-1003

    HONEYWELL

    W7101A-1003

    DISCONTINUED BY MANUFACTURER, 6 STAGE, 24V, SATELLITE SEQUENCER (W7100)
    ✓ IN STOCK!
    Buy Surplus As Low As $1,103.53
    $1,103.53
    Repair Yours $1,350.00
    JOHNSON CONTROLS CD-P00-00-0

    JOHNSON CONTROLS

    CD-P00-00-0

    DISCONTINUED BY MANUFACTURER, TRANSMITTER SENSOR, CO2, 30V, DUCT MOUNT
    ✓ IN STOCK!
    Buy Surplus As Low As $693.88
    $693.88
    Repair Yours $560.00
    JOHNSON CONTROLS M4-CVM03050-0

    JOHNSON CONTROLS

    METASYS

    M4-CVM03050-0

    VAV BOX CONTROLLER, M4-CV SERIES, INTEGRATED ACTUATOR, DIFFERENTIAL PRESSURE TRANSDUCER / DPT, MS/TP (N2) COMMUNICATIONS, 8 POINTS, 3 UI / 2 CO / 3 BO, REAL-TIME CLOCK, 24 VAC INPUT, 35 IN-L ...
    ✓ IN STOCK!
    $1,345.99 Buy Surplus As Low As $807.60
    $807.60
    Repair Yours $538.00
    INVENSYS MA40-7170

    INVENSYS

    BARBER COLMAN

    MA40-7170

    ACTUATOR, SPRING RETURN, FLAT PACK, 120V, 2-POSITION, 150IN-LBS, DIRECT MOUNT
    ✓ IN STOCK!
    $1,618.40 Buy Surplus As Low As $1,068.14
    $1,068.14
    Repair Yours $323.68
    INVENSYS MA-418

    INVENSYS

    BARBER COLMAN

    MA-418

    ACTUATOR, 2-POSITION, 120 V, SPRING RETURN, 60 LB-IN TORQUE, 70 WATTS RUNNING, 25 WATTS HOLDING, REPLACES EA12-00080-000-0-00, (AKA MA-418-0-0-2 / MA-418-0-0-3 / MA-418-0-0-4)
    ✓ IN STOCK!
    $935.00 Buy Surplus As Low As $666.19
    $666.19
    Repair Yours $464.00
    JOHNSON CONTROLS MS-NAE5510-1

    JOHNSON CONTROLS

    METASYS

    MS-NAE5510-1

    DISCONTINUED BY MANUFACTURER, NETWORK CONTROLLER, 24VAC, 2 RS232C SERIAL PORTS, 2 USB SERIAL PORTS, 2 RS485 PORTS, 1 ETHERNET PORT, 1 DATA PROTECTION BATTERY, SUPPORTS 2 NS OR 2 BACNET MS/TP ...
    ✓ IN STOCK!
    Buy Surplus As Low As $1,733.73
    $1,733.73
    Repair Yours $790.00
    SENSUS 121-12-1 1/2

    SENSUS

    121-12-1 1/2

    GAS PRESSURE REGULATOR, NPT, INLET GAS PRESSURES UP TO 60 PSIG, ORIFICE SIZE DEPEND, OUTLET GAS PRESSURE RANGE AVAILABLE, 1.5" W.C. UP TO 3 PSIG, SPRING DEPENDENT, 1.5"REG, 60#MAX, 6/14"WC, ...
    ✓ IN STOCK!
    $3,730.07 Buy Surplus As Low As $2,238.04
    $2,238.04
    SENSUS 243-8-IRV-1 1/2

    SENSUS

    243-8-IRV-1 1/2

    GAS REGULATOR, 1 1/2 INCH NPT, 1 INCH ORIFICE
    ✓ IN STOCK!
    $1,155.00 Buy Surplus As Low As $670.00
    $670.00
    WEIL MCLAIN 381-356-499

    WEIL MCLAIN

    381-356-499

    INDUCER FAN, ASSEMBLY KIT, FOR CGS SERIES 1 OR CGI SERIES 2.
    ✓ IN STOCK!
    $905.00 Buy Surplus As Low As $547.96
    $547.96
    HONEYWELL Q7750A2003

    HONEYWELL

    Q7750A2003

    DISCONTINUED BY MANUFACTURER, ZONE MANAGER, EXCEL 10, 24 VAC, 50/60 HZ, FREE TOPOLOGY (FTT) E-BUS TRANSCEIVER
    ✓ IN STOCK!
    Buy Surplus As Low As $1,394.66
    $1,394.66
    Repair Yours $954.50
    HONEYWELL MS7520A2205

    HONEYWELL

    MS7520A2205

    DAMPER ACTUATOR, WITH SPRING RETURN, AUX SWITCH FOR HVAC, 2 POSITION, SUPPLY VOLTAGE 24VDC, TORQUE 175 LB/IN
    ✓ IN STOCK!
    $1,084.20 Buy Surplus As Low As $610.83
    $610.83
    Repair Yours $300.00
    HONEYWELL MS4120A1209

    HONEYWELL

    MS4120A1209

    HVAC ACTUATOR, DAMPER AND VALVE, SPRING RETURN, ON/OFF SIGNAL TYPE, 175 IN-LB TORQUE, 100-250 VAC, SPDT CONTACT, IP54, W/ 3 MM CRANK, MOUNTING BRACKET, SELF-CENTERING SHAFT ADAPTER
    ✓ IN STOCK!
    $977.13 Buy Surplus As Low As $515.42
    $515.42
    Repair Yours $353.00
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