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    HVAC / Boiler Control

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    46 Results.
    HONEYWELL RA890G1229

    HONEYWELL

    RA890G1229

    20 VAC PROTECTORELAY W/ 0.8 SECOND FFTR (15 SAFETY SWITCH TIMING)
    ✓ IN STOCK!
    $6,750.00 Buy Surplus As Low As $3,433.65
    $3,433.65
    Repair Yours $790.00
    HONEYWELL RA890F-1247-3

    HONEYWELL

    RA890F-1247-3

    DISCONTINUED BY MANUFACTURER, FLAME PROTECTOR RELAY, SAFTEY, RESPONSE 3 SECONDS, 120V
    ✓ IN STOCK!
    Buy Surplus As Low As $993.49
    $993.49
    Repair Yours $785.00
    HONEYWELL RA890F-1478

    HONEYWELL

    RA890F-1478

    DISCONTINUED BY MANUFACTURER, PROTECTORELAY, FLAME SAFETY, FLAME CONTROL, 120 VAC, FLAME RESPONSE 15 SEC, SPDT ALARM CONTACTS
    ✓ IN STOCK!
    Buy Surplus As Low As $1,470.84
    $1,470.84
    Repair Yours $800.00
    HONEYWELL S984F-1005

    HONEYWELL

    S984F-1005

    STEP CONTROLLER
    ✓ IN STOCK!
    $1,106.64 Buy Surplus As Low As $484.05
    $484.05
    Repair Yours $446.40
    HONEYWELL ERM5220R1018

    HONEYWELL

    RESIDEO

    ERM5220R1018

    EQUIPMENT REMOTE MODULE, REDLINK, WIRELESS, FOR COMMUNICATION BETWEEN UNIT/COMPRESSOR/BOILER AND THERMOSTAT
    ✓ IN STOCK!
    $240.00 Buy Surplus As Low As $147.83
    $147.83
    Repair Yours $300.00
    HONEYWELL AQ2514B2

    HONEYWELL

    AQ2514B2

    BOILER RESET CONTROL, CONTROL PANEL FOR 4 ZONES, 2 WIRE, 120 VAC, 50/60 HZ
    Buy Surplus As Low As $586.73
    $586.73
    Repair Yours $470.00
    HONEYWELL AQ15200B

    HONEYWELL

    AQ15200B

    DISCONTINUED BY MANUFACTURER, AQUATROL INJECT/MIX BOILER RESET CONTROL MODULE, 24VAC, 7 DAY SETBACK, UP TO TWO SETBACK PERIODS A DAY, FOR USE WITH AQ2000 PANELS
    Buy Surplus As Low As $324.00
    $324.00
    Repair Yours $300.00
    HONEYWELL S8600H

    HONEYWELL

    S8600H

    DISCONTINUED BY MANUFACTURER, IGNITION MODULE, 100 PERCENT SHUTOFF IP, 24 V AC, 60 HZ, 1 A MAX, 90 SECOND L.O.
    Buy Surplus As Low As $147.68
    $147.68
    HONEYWELL S984-D1049

    HONEYWELL

    S984-D1049

    HONEYWELL S984D1049 - STEP CONTROLLER
    Buy Surplus As Low As $3,270.00
    $3,270.00
    Repair Yours $2,750.00
    HONEYWELL RMA300-SM-F3-MB-TC-TG-F1C3

    HONEYWELL

    RMA300-SM-F3-MB-TC-TG-F1C3

    PERCENT METER ANALOG EXPLOSION PROOF
    $435.00 Buy Surplus As Low As $261.00
    $261.00
    Repair Yours $300.00
    HONEYWELL RMA300-SM-MB-F103

    HONEYWELL

    RMA300-SM-MB-F103

    PERCENT METER ANALOG EXPLOSION PROOF
    $477.00 Buy Surplus As Low As $287.00
    $287.00
    Repair Yours $300.00
    HONEYWELL 118702E

    HONEYWELL

    118702E

    DISCONTINUED BY MANUFACTURER, REMOTE RESET COVER, FOR USE WITH RA890F,G AND R4795 SERIES
    Buy Surplus As Low As $344.34
    $344.34
    Repair Yours $300.00
    HONEYWELL 04905-X50-33-333-X7

    HONEYWELL

    04905-X50-33-333-X7

    CONDUCTIVITY CELL, HVAC, BOILER CONTROL, HVAC, BOILER CONTROL
    $21.00 Buy Surplus As Low As $13.00
    $13.00
    Repair Yours Contact Us
    HONEYWELL L60471005

    HONEYWELL

    L60471005

    DISCONTINUED BY MANUFACTURER, SUMMER AND WINTER BOILER CONTROL
    ✓ IN STOCK!
    $165.03 Buy Surplus As Low As $60.16
    $60.16
    HONEYWELL AQ2511B0

    HONEYWELL

    AQ2511B0

    BOILER CONTROL EXPANDABLE RESET PANEL LCD
    Buy Surplus As Low As $372.00
    $372.00
    Repair Yours $310.00
    HONEYWELL AQ2514B4

    HONEYWELL

    AQ2514B4

    BOILER CONTROL RESET LCD W/END SWITCHES
    Buy Surplus As Low As $528.00
    $528.00
    Repair Yours $440.00
    HONEYWELL AQ25144B

    HONEYWELL

    AQ25144B

    BOILERRESETCTRLW/PRIORVLVW/SWS
    $561.00 Buy Surplus As Low As $337.00
    $337.00
    Repair Yours $300.00
    HONEYWELL AQ25142B

    HONEYWELL

    AQ25142B

    BOILERRESETCTRL W/DHW PRIORITY
    $866.00 Buy Surplus As Low As $520.00
    $520.00
    Repair Yours $432.00
    HONEYWELL AQ2524M4

    HONEYWELL

    AQ2524M4

    BOILER CONTROLLER
    Buy Surplus As Low As $39.00
    $39.00
    HONEYWELL W8735Y1000

    HONEYWELL

    RESIDEO

    W8735Y1000

    WIRELESS SENSOR FOR OUTDOOR TEMPERATURE
    $447.00 Buy Surplus As Low As $293.00
    $293.00
    Repair Yours $300.00
    HONEYWELL 070209-0001

    HONEYWELL

    070209-0001

    BOILER IGNITION ELECTRODE
    Buy Surplus As Low As $72.00
    $72.00
    Repair Yours $300.00
    HONEYWELL AQ2524M2

    HONEYWELL

    AQ2524M2

    BOILER CONTROL PANEL
    Buy Surplus As Low As $960.00
    $960.00
    Repair Yours $800.00
    HONEYWELL 817-00234

    HONEYWELL

    817-00234

    DISCONTINUED BY MANUFACTURER, HONEYWELL , 817-00234, 81700234, PRESSURE CONTROL SWITCH, 0-300PSI
    Buy Surplus As Low As $81.14
    $81.14
    HONEYWELL MCBA14A1004

    HONEYWELL

    MCBA14A1004

    DISCONTINUED BY MANUFACTURER, ELECTRONIC BOILER CONTROLLER, 115 VAC MAINS, 60 HZ, 5 SEC FIRST SAFETY TIME, 10 SEC PREPURGE TIME, (MCBA14201D)
    Buy Surplus As Low As $1,654.08
    $1,654.08
    Repair Yours $990.00
    HONEYWELL MCBA14201D

    HONEYWELL

    MCBA14201D

    DISCONTINUED BY MANUFACTURER, ELECTRONIC BOILER CONTROLLER, 115 VAC MAINS, 60 HZ, 5 SEC FIRST SAFETY TIME, 10 SEC PREPURGE TIME, (MCBA14A1004)
    Buy Surplus As Low As $1,654.08
    $1,654.08
    Repair Yours $990.00
    HONEYWELL S9301A1027

    HONEYWELL

    S9301A1027

    DISCONTINUED BY MANUFACTURER, INTEGRATED BOILER CONTROL, .2AMP, 24V, 60HZ
    Buy Surplus As Low As $312.00
    $312.00
    Repair Yours $300.00
    HONEYWELL 04905-X50-33-333-20-000-000-000

    HONEYWELL

    04905-X50-33-333-20-000-000-000

    DISCONTINUED BY MANUFACTURER, 4905 CONDUCTIVITY CELL, CELL CONSTANT: 50, ELECTRODE MATERIAL: NICKEL, AUTOMATIC TEMP COMPENSATION: FOR APT2000/4000CC AND UDA2182, LEADWIRE LENGTH: 20 FT
    Buy Surplus As Low As $720.13
    $720.13
    Repair Yours $575.00
    HONEYWELL CD.052.002.325

    HONEYWELL

    CD.052.002.325

    DISCONTINUED BY MANUFACTURER, PRINTED CIRCUIT BOARD, FOR BOILER CONTROL, (FPL 8101)
    Buy Surplus As Low As $324.00
    $324.00
    Repair Yours $300.00
    HONEYWELL 34X7301

    HONEYWELL

    34X7301

    DISCONTINUED BY MANUFACTURER, PC BOARD, CONTROL BOARD, STAND-OFF MOUNT
    Buy Surplus As Low As $382.79
    $382.79
    Repair Yours $312.00
    HONEYWELL ABC900A1000

    HONEYWELL

    ABC900A1000

    ADVANCED BOILER CONTROL BASE SYSTEM
    $10,533.00 Buy Surplus As Low As $6,320.00
    $6,320.00
    Repair Yours $5,246.00
    HONEYWELL ABC900B1009

    HONEYWELL

    ABC900B1009

    ADVANCE BOILER CONTROL BASE CONFIGURATION WITH OPTIONS
    $18,056.00 Buy Surplus As Low As $10,834.00
    $10,834.00
    Repair Yours $8,993.00
    HONEYWELL AQ25242B

    HONEYWELL

    AQ25242B

    UNIV.INJCTN/MIX BOILRRESETCONT
    $839.00 Buy Surplus As Low As $504.00
    $504.00
    Repair Yours $419.00
    HONEYWELL AQ25A44B

    HONEYWELL

    AQ25A44B

    4ZONESETBACKBOILERCONTROL
    $405.00 Buy Surplus As Low As $243.00
    $243.00
    Repair Yours $300.00
    HONEYWELL AQ25244B

    HONEYWELL

    AQ25244B

    UNIVINJ/MIXBOILERRESETCTRL
    $707.00 Buy Surplus As Low As $425.00
    $425.00
    Repair Yours $353.00
    HONEYWELL AQ15540B

    HONEYWELL

    AQ15540B

    AQUATROL ZONING MODULE
    $192.00 Buy Surplus As Low As $116.00
    $116.00
    Repair Yours $300.00
    HONEYWELL W8735ER1000

    HONEYWELL

    W8735ER1000

    AQUA OUTDOOR, RESET WIRELESS MODULE
    $247.00 Buy Surplus As Low As $149.00
    $149.00
    Repair Yours $300.00
    HONEYWELL RMA300-DM-SB-TG-2J

    HONEYWELL

    RMA300-DM-SB-TG-2J

    DIGITAL REMOTE METER ASSEMBLY EXPLOSION PROOF
    $467.00 Buy Surplus As Low As $280.00
    $280.00
    Repair Yours $300.00
    HONEYWELL 1187028

    HONEYWELL

    1187028

    REMOTE RESET COVER FOR RA890 120V 50-60HZ
    $175.00 Buy Surplus As Low As $105.00
    $105.00
    Repair Yours $300.00
    HONEYWELL AQ25A4B2

    HONEYWELL

    AQ25A4B2

    BOILER CONTROL PANEL
    Buy Surplus As Low As $588.00
    $588.00
    Repair Yours $490.00
    HONEYWELL AQ2558P2X

    HONEYWELL

    AQ2558P2X

    BOILER CONTROL PANEL
    Buy Surplus As Low As $396.00
    $396.00
    Repair Yours $330.00
    HONEYWELL S8600H-1022

    HONEYWELL

    S8600H-1022

    IGNITION MODULE FOR FURNACE- 100PERCENT SHUTOFF IP
    Buy Surplus As Low As $168.00
    $168.00
    Repair Yours $300.00
    HONEYWELL 0620820U

    HONEYWELL

    0620820U

    GAS BURNER SAFETY CONTROL BOX, 5AMP, 220/240 VAC, 50 HZ, 10VA, IP40, MMI-810.1-MOD-40-34
    $414.00 Buy Surplus As Low As $249.00
    $249.00
    Repair Yours $300.00
    HONEYWELL S9301A1001

    HONEYWELL

    S9301A1001

    DISCONTINUED BY MANUFACTURER, BOILER CONTROL, INTEGRATED, 24VAC, .5/.7/.8AMP
    Buy Surplus As Low As $568.00
    $568.00
    Repair Yours $449.00
    HONEYWELL 34X7501

    HONEYWELL

    NOVAR CONTROLS CORP

    34X7501

    DISCONTINUED BY MANUFACTURER, PC BOARD, CONTROL BOARD, STAND-OFF MOUNT
    Buy Surplus As Low As $306.03
    $306.03
    Repair Yours $300.00
    HONEYWELL L4189B-2012

    HONEYWELL

    L4189B-2012

    DISCONTINUED BY MANUFACTURER, WATER TEMPERATURE CONTROL, AQUASTAT, 100-230 FAHRENHEIT, SPST SWITCHING, REMOTE BULB, SCREWDRIVER SLOT, REMOTE MOUNT
    Buy Surplus As Low As $61.38
    $61.38
    HONEYWELL BCU 480Q3P1C0D1000K1E1/LM400QF3O0E1

    HONEYWELL

    KROMSCHRODER

    BCU 480Q3P1C0D1000K1E1/LM400QF3O0E1

    BURNER CONTROL UNIT, 115VAC -15/+10%, 50/60HZ, KS88683428
    $3,774.00 Buy Surplus As Low As $2,265.00
    $2,265.00
    Repair Yours $1,880.00
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