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    HVAC / HVAC Control System Board

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    Results 101-150 of 340.
    HONEYWELL DB7110U1000

    HONEYWELL

    DB7110U1000

    UNIVERSAL DEFROST BOARD, SINGLE STG HP, REPLACES ST74C-1002
    ✓ IN STOCK!
    $201.00 Buy Surplus As Low As $121.00
    $121.00
    HONEYWELL W7764A-2009

    HONEYWELL

    W7764A-2009

    DISCONTINUED BY MANUFACTURER, CONTROLLER, BOILER INTERFACE, 20-30VAC, -40-150°F
    ✓ IN STOCK!
    Buy Surplus As Low As $141.83
    $141.83
    Repair Yours $200.00
    HONEYWELL XL50A-UMMI-PC

    HONEYWELL

    XL50A-UMMI-PC

    DISCONTINUED BY MANUFACTURER, HVAC CONTROLLER, DDC WITHIN THE EXCEL 5000 SYSTEM, STAND-ALONE / DIAL-UP / NETWORKED SYSTEMS, FREE PROGRAMMABLE WITH CARE SOFTWARE, 24 VAC, 50/60HZ, IP20, RS232 ...
    ✓ IN STOCK!
    Buy Surplus As Low As $1,721.80
    $1,721.80
    Repair Yours $1,587.89
    HONEYWELL JCX8005

    HONEYWELL

    TRIDIUM INC

    JCX8005

    CONTROLLER, COMPACT, EMBEDDED, PROGRAMMABLE, 1GB DDR3 SDRAM, REMOVABLE MICRO-SD CARD, 4GB MAX / 2GB USER STORAGE, USB TYPE A CONNECTOR, 24VAC/DC, FOR USE WITH NIAGARA 4.1 AND LATER, (12977)
    ✓ IN STOCK!
    $2,578.45 Buy Surplus As Low As $1,587.29
    $1,587.29
    Repair Yours $1,284.07
    HONEYWELL PVB4022AS-ILC

    HONEYWELL

    PVB4022AS-ILC

    DISCONTINUED BY MANUFACTURER, SPYDER BACNET ILC PROGRAMMABLE VAV CONTROLLER, 4 UNIVERSAL/0 DIGITAL INPUTS, 2 ANALOG/2 DIGITAL OUTPUTS, INTEGRATED ACTUATOR
    ✓ IN STOCK!
    Buy Surplus As Low As $2,704.78 $1,815.00
    $2,704.78 $1,815.00
    Repair Yours $2,200.00
    HONEYWELL 900A16-0101

    HONEYWELL

    900A16-0101

    DISCONTINUED BY MANUFACTURER, CONTROLLER, HC900, HLAI, 16 CHANNEL, 0-60 DEGREE C OPERATING TEMPERATURE, 2 NA MAX CHANNEL, 10 V, 8235-001
    ✓ IN STOCK!
    Buy Surplus As Low As $1,672.19
    $1,672.19
    Repair Yours $1,450.00
    HONEYWELL 900A16-0103

    HONEYWELL

    900A16-0103

    HIGH LEVEL ANALOG INPUT MODULE, 50008235-002, 16-CHANNEL, 100MS, CONTROLEDGE 900 PLATFORM, OPERATING TEMP: 0 TO 60 DEG. C, 75MA MAX AT 5 VDC AND 50MA MAX AT 24 VDC, +/- 10V, 2UA MAX/CH
    ✓ IN STOCK!
    $3,172.00 Buy Surplus As Low As $1,904.00
    $1,904.00
    HONEYWELL W758A-1020

    HONEYWELL

    W758A-1020

    DISCONTINUED BY MANUFACTURER, OUTDOOR RESET CONTROL, 120 VAC
    ✓ IN STOCK!
    Buy Surplus As Low As $253.69
    $253.69
    Repair Yours $210.56
    HONEYWELL Q634A 1047

    HONEYWELL

    Q634A 1047

    DISCONTINUED BY MANUFACTURER, SWITCHING SUBBASE, (COOL-OFF-HEAT/FAN-AUTO-ON), FOR USE W/ T834A
    ✓ IN STOCK!
    Buy Surplus As Low As $16.36
    $16.36
    HONEYWELL 51309397-015

    HONEYWELL

    51309397-015

    DISCONTINUED BY MANUFACTURER, PC BOARD, ROUND, NAMUR H6, NE OPTION
    ✓ IN STOCK!
    Buy Surplus As Low As $223.25
    $223.25
    Repair Yours $200.00
    HONEYWELL TAZ-4H

    HONEYWELL

    RESIDEO

    TAZ-4H

    ZONE PANEL, 4 ZONES ADD-A, REPLACED TAZ-4
    ✓ IN STOCK!
    $400.00 Buy Surplus As Low As $240.00
    $240.00
    HONEYWELL WEB-403-AX-EO

    HONEYWELL

    WEB-403-AX-EO

    DISCONTINUED BY MANUFACTURER, BUILDING CONTROLLER, WEBS-AX, BACNET
    ✓ IN STOCK!
    Buy Surplus As Low As $2,215.35
    $2,215.35
    HONEYWELL CP-EXPIO/U

    HONEYWELL

    CP-EXPIO/U

    DISCONTINUED BY MANUFACTURER, EXPANSION I/O BOARD, COMFORTPOINT OPEN, IP20, LED INDICATION (, 24 INPUT / OUTPUT, 15 VA, 24 VAC, 50/60 HZ, ABS PLASTIC, RS485 CONNECTION, DIN RAIL/WALL MOUNT
    ✓ IN STOCK!
    Buy Surplus As Low As $1,169.64
    $1,169.64
    Repair Yours $947.00
    HONEYWELL 14005680-089592

    HONEYWELL

    14005680-089592

    DISCONTINUED BY MANUFACTURER, FIBER OPTIC INTERFACE BOARD
    Buy Surplus As Low As $600.00
    $600.00
    Repair Yours $500.00
    HONEYWELL W7900A1006

    HONEYWELL

    W7900A1006

    DISCONTINUED BY MANUFACTURER, CHILLER CONTROLLER, COOLING, 24 VAC, 50/60 HZ, 20-100 DEGREES F
    Buy Surplus As Low As $999.10
    $999.10
    Repair Yours $790.00
    HONEYWELL 4074EHG

    HONEYWELL

    RESIDEO

    4074EHG

    TERMINAL BOARD ASSEMBLY
    $32.00 Buy Surplus As Low As $20.00
    $20.00
    HONEYWELL W7751B-2010

    HONEYWELL

    W7751B-2010

    HVAC/R CONTROL, VARIABLE AIR VOLUME II CONTROLLER, 24 VAC, 60 HZ, 14 BIT A/D CONVERTER
    $7,260.00 Buy Surplus As Low As $4,356.00
    $4,356.00
    Repair Yours $3,616.00
    HONEYWELL Y8835A1028

    HONEYWELL

    Y8835A1028

    NETWORKED ZONING SYSTEM KIT FOR 3 ZONES. INCLUDES THREE VISIONPRO IAQ THERMOSTATS, ONE W8835 ENVIRAZONE PANEL, ONE C7835 DISCHARGE AIR TEMPERATURE SE
    $1,194.00 Buy Surplus As Low As $717.00
    $717.00
    Repair Yours $595.00
    HONEYWELL Y8835A1051

    HONEYWELL

    Y8835A1051

    3OR4ZONENETWORKZONINGKIT3H/2C
    $831.00 Buy Surplus As Low As $499.00
    $499.00
    Repair Yours $415.00
    HONEYWELL Q7750A

    HONEYWELL

    Q7750A

    DISCONTINUED BY MANUFACTURER,ZONE MANAGER, EXCEL 10, 24 VAC, 50/60 HZ, 13 VA, 7.5 WATT
    Buy Surplus As Low As $1,650.00
    $1,650.00
    Repair Yours $1,350.00
    HONEYWELL W973E1005

    HONEYWELL

    W973E1005

    DISCONTINUED BY MANUFACTURER, LOGIC PANEL, USE WITH T7067 AND Q667, STAGES 0 HEAT/4 COOL
    Buy Surplus As Low As $811.64
    $811.64
    HONEYWELL W973J-1017

    HONEYWELL

    W973J-1017

    DISCONTINUED BY MANUFACTURER, LOGIC PANEL, 24V, FOR SINGLE ZONE A/C SYSTEM, SOLID STATE LOGIC PANEL, NO REPLACEMENT
    Buy Surplus As Low As $1,594.44
    $1,594.44
    Repair Yours $1,272.00
    HONEYWELL QS7100D1003

    HONEYWELL

    QS7100D1003

    DIAGNOSTICK(R7184/L7124-48)
    $128.00 Buy Surplus As Low As $77.00
    $77.00
    HONEYWELL 32152103

    HONEYWELL

    32152103

    TSTAT 4WIRE,18G SHLD,ORNG 1000
    $374.00 Buy Surplus As Low As $225.00
    $225.00
    Repair Yours $200.00
    HONEYWELL W7459D1005

    HONEYWELL

    W7459D1005

    DISCONTINUED BY MANUFACTURER, ECONOMIZER LOGIC MODULE, W/ HIGH ENTHALPY LIMIT, WORKS W/ M7415 & M8405 DAMPER ACTUATORS, OUTPUT FOR M7415, DISCHARGE AIR TEMPERATURE CONTROLLER T675 OR T6031, ...
    Buy Surplus As Low As $44.29
    $44.29
    HONEYWELL RP908A1047

    HONEYWELL

    RP908A1047

    DISCONTINUED BY MANUFACTURER, CONTROLLER ADJUSTABLE PROPORTIONAL BAND, CASE MATERIAL: PLASTIC, STYRENE, GRAY MOUNTING METHOD: SLOT, OPERATING TEMP RANGE: +40.0/+120.0 DEG FAHRENHEIT
    Buy Surplus As Low As $374.92
    $374.92
    Repair Yours $299.00
    HONEYWELL YTHM5421R1002

    HONEYWELL

    YTHM5421R1002

    EQUIPINTERFACEMODULEKIT
    $96.00 Buy Surplus As Low As $58.00
    $58.00
    HONEYWELL 2450CD-70820248

    HONEYWELL

    MICROSWITCH

    2450CD-70820248

    THERMOSTAT
    $34.00 Buy Surplus As Low As $22.00
    $22.00
    HONEYWELL 2450CM 80030283

    HONEYWELL

    MICROSWITCH

    2450CM 80030283

    THERMOSTAT
    $22.00 Buy Surplus As Low As $13.00
    $13.00
    HONEYWELL 2450CM 80820784

    HONEYWELL

    MICROSWITCH

    2450CM 80820784

    THERMOSTAT
    $47.00 Buy Surplus As Low As $29.00
    $29.00
    HONEYWELL 2450CM 80820789

    HONEYWELL

    MICROSWITCH

    2450CM 80820789

    THERMOSTAT
    $17.00 Buy Surplus As Low As $11.00
    $11.00
    HONEYWELL 2450R 80020539

    HONEYWELL

    MICROSWITCH

    2450R 80020539

    THERMOSTAT
    $43.00 Buy Surplus As Low As $26.00
    $26.00
    HONEYWELL 2450R 87180010

    HONEYWELL

    MICROSWITCH

    2450R 87180010

    THERMOSTAT
    $47.00 Buy Surplus As Low As $29.00
    $29.00
    HONEYWELL 2450RC260040178

    HONEYWELL

    MICROSWITCH

    2450RC260040178

    THERMOSTAT
    $59.00 Buy Surplus As Low As $35.00
    $35.00
    HONEYWELL 2450RCG80820866

    HONEYWELL

    MICROSWITCH

    2450RCG80820866

    THERMOSTAT
    $64.00 Buy Surplus As Low As $39.00
    $39.00
    HONEYWELL 2455R 00030224

    HONEYWELL

    MICROSWITCH

    2455R 00030224

    THERMOSTAT
    $43.00 Buy Surplus As Low As $26.00
    $26.00
    HONEYWELL 2455R 01610035

    HONEYWELL

    MICROSWITCH

    2455R 01610035

    THERMOSTAT
    $20.00 Buy Surplus As Low As $12.00
    $12.00
    HONEYWELL 2455R2600020386

    HONEYWELL

    MICROSWITCH

    2455R2600020386

    THERMOSTAT
    $43.00 Buy Surplus As Low As $26.00
    $26.00
    HONEYWELL 2455RC-00010960

    HONEYWELL

    MICROSWITCH

    2455RC-00010960

    THERMOSTAT
    $24.00 Buy Surplus As Low As $15.00
    $15.00
    HONEYWELL 2455RC266370002

    HONEYWELL

    MICROSWITCH

    2455RC266370002

    THERMOSTAT
    $47.00 Buy Surplus As Low As $29.00
    $29.00
    HONEYWELL 2455RC 84370033

    HONEYWELL

    MICROSWITCH

    2455RC 84370033

    THERMOSTAT
    $51.00 Buy Surplus As Low As $31.00
    $31.00
    HONEYWELL 2455RG 80750286

    HONEYWELL

    MICROSWITCH

    2455RG 80750286

    THERMOSTAT
    $20.00 Buy Surplus As Low As $12.00
    $12.00
    HONEYWELL 2455RM-01580026

    HONEYWELL

    MICROSWITCH

    2455RM-01580026

    THERMOSTAT
    $51.00 Buy Surplus As Low As $31.00
    $31.00
    HONEYWELL 2455RM-81740187

    HONEYWELL

    MICROSWITCH

    2455RM-81740187

    THERMOSTAT
    $47.00 Buy Surplus As Low As $29.00
    $29.00
    HONEYWELL 2455R3501460062

    HONEYWELL

    MICROSWITCH

    2455R3501460062

    THERMOSTAT
    $43.00 Buy Surplus As Low As $26.00
    $26.00
    HONEYWELL 2455R 81800013

    HONEYWELL

    MICROSWITCH

    2455R 81800013

    THERMOSTAT
    $24.00 Buy Surplus As Low As $15.00
    $15.00
    HONEYWELL 3000---09060028

    HONEYWELL

    MICROSWITCH

    3000---09060028

    THERMOSTAT
    $51.00 Buy Surplus As Low As $31.00
    $31.00
    HONEYWELL 3000---09090020

    HONEYWELL

    MICROSWITCH

    3000---09090020

    THERMOSTAT
    $80.00 Buy Surplus As Low As $48.00
    $48.00
    HONEYWELL 2450CM 00950086

    HONEYWELL

    MICROSWITCH

    2450CM 00950086

    THERMOSTAT
    $51.00 Buy Surplus As Low As $31.00
    $31.00
    HONEYWELL 2450RCH87110001

    HONEYWELL

    MICROSWITCH

    2450RCH87110001

    THERMOSTAT
    $47.00 Buy Surplus As Low As $29.00
    $29.00
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