Johnson Controls
Browse Johnson Controls replacement parts at Furnace Part Source, including available BASO gas products, temperature controls, damper actuators, wall mount sensors, control modules, fan speed controls, pressure controls, and repair kits. Match the exact part number, equipment model, voltage, pressure range, temperature range, stroke, mounting requirements, and control details before ordering to help confirm the correct replacement.
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Johnson Controls A421ABC-02 120/240V SPDT -40/212F 6' SEN
Johnson Controls
MSRP: $162.39Now: $125.49Johnson Controls A421ABC-02 120/240V SPDT -40/212F 6' SEN FurnacePartSource.com CommitmentMSRP: $162.39Now: $125.49 -
Johnson Controls A421ABC-03 Temperature Control, Electronic, 120/240 Vac
Johnson Controls
MSRP: $169.31Now: $130.83Johnson Controls A421ABC-03 Temperature Control, Electronic, 120/240 Vac FurnacePartSource.com Commitment<MSRP: $169.31Now: $130.83 -
Johnson Controls A421ABC-04 120/240V SPDT -40/212F 13' SEN
Johnson Controls
MSRP: $172.29Now: $133.14Johnson Controls A421ABC-04 120/240V SPDT -40/212F 13' SEN FurnacePartSource.com CommitmentMSRP: $172.29Now: $133.14 -
Johnson Controls A421ABC-06 120/240V SPDT -40/212F 19' SEN
Johnson Controls
MSRP: $179.22Now: $138.49Johnson Controls A421ABC-06 120/240V SPDT -40/212F 19' SEN FurnacePartSource.com CommitmentMSRP: $179.22Now: $138.49 -
Johnson Controls A421ABD-02 120/240V SPDT 6'SEN w/DfrstCyl
Johnson Controls
MSRP: $187.13Now: $144.60Johnson Controls A421ABD-02 120/240V SPDT 6'SEN w/DfrstCyl FurnacePartSource.com CommitmentMSRP: $187.13Now: $144.60 -
Johnson Controls A421ABG-02 120vPwrCrd SPDT -40/212F 6'SEN
Johnson Controls
MSRP: $222.78Now: $172.15Johnson Controls A421ABG-02 120vPwrCrd SPDT -40/212F 6'SEN FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order...MSRP: $222.78Now: $172.15 -
Johnson Controls A421ABT-02 Sensor w/Timer 120/240V SPDT 6'
Johnson Controls
MSRP: $187.13Now: $144.60Johnson Controls A421ABT-02 120/240V SPDT 6'SEN w/Timer FurnacePartSource.com CommitmentMSRP: $187.13Now: $144.60 -
Johnson Controls A421AEC-01 LineVoltNema4X ElecTempControl
Johnson Controls
MSRP: $235.04Now: $181.62Johnson Controls A421AEC-01 LineVoltNema4X ElecTempControl FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order...MSRP: $235.04Now: $181.62 -
Johnson Controls A421AEC-02 LineVoltNema4X ElecTempControl
Johnson Controls
MSRP: $239.91Now: $185.38Johnson Controls A421AEC-02 LineVoltNema4X ElecTempControl FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order...MSRP: $239.91Now: $185.38 -
Johnson Controls A421AED-01 120/240V SPDT 9"SEN w/DfrstCyl
Johnson Controls
MSRP: $273.06Now: $211.00Johnson Controls A421AED-01 120/240V SPDT 9"SEN w/DfrstCyl FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order...MSRP: $273.06Now: $211.00 -
Johnson Controls A421AED-02 120/240V SPDT 6'SEN w/NEMA 4
Johnson Controls
MSRP: $287.69Now: $222.31Johnson Controls A421AED-02 120/240V SPDT 6'SEN w/NEMA 4 FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order...MSRP: $287.69Now: $222.31 -
Johnson Controls A421GBF-02 24V SPDT -40/212F 6' SEN NEMA1
Johnson Controls
MSRP: $162.39Now: $125.49Johnson Controls A421GBF-02 24V SPDT -40/212F 6' SEN NEMA1 FurnacePartSource.com CommitmentMSRP: $162.39Now: $125.49 -
Johnson Controls A421GEF-01C NEMA4X 24VAC TEMP CONTROL
Johnson Controls
MSRP: $234.07Now: $180.87Johnson Controls A421GEF-01C NEMA4X 24VAC TEMP CONTROL FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order...MSRP: $234.07Now: $180.87 -
Johnson Controls A421GEF-02 24V SPDT -40/212F 6'SEN NEMA4X
Johnson Controls
MSRP: $244.79Now: $189.16Johnson Controls A421GEF-02 24V SPDT -40/212F 6'SEN NEMA4X FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order...MSRP: $244.79Now: $189.16 -
Johnson Controls A70BA-18 15/55F,20',Open-Lo M/R
Johnson Controls
MSRP: $341.37Now: $263.78Johnson Controls A70BA-18 15/55F,20',Open-Lo M/R FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order RequirementsMSRP: $341.37Now: $263.78 -
Johnson Controls A70GA-1 15/55F Open-Lo 20' Cap Temperature Control
Johnson Controls
MSRP: $436.13Now: $337.01Johnson Controls A70GA-1 15/55F Open-Lo 20' Cap Temperature Control FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No...MSRP: $436.13Now: $337.01 -
Johnson Controls A70GA-2 35/80F,Open-Lo,6',Aux.Open-Hi
Johnson Controls
MSRP: $365.84Now: $282.69Johnson Controls A70GA-2 35/80F,Open-Lo,6',Aux.Open-Hi FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order...MSRP: $365.84Now: $282.69 -
Johnson Controls A70HA-1 15/55F M/R OPEN-LO 20'CAP CTRL
Johnson Controls
MSRP: $373.11Now: $288.32Johnson Controls A70HA-1 15/55F M/R OPEN-LO 20'CAP CTRL FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order...MSRP: $373.11Now: $288.32 -
Johnson Controls A70HA-14 4 WIRE TEMPERATURE CONTROL
Johnson Controls
MSRP: $439.18Now: $339.37Johnson Controls A70HA-14 4 WIRE TEMPERATURE CONTROL FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order...MSRP: $439.18Now: $339.37 -
Johnson Controls A70HA-1G TWO CIRCUIT TEMP CONTROL
Johnson Controls
MSRP: $459.56Now: $355.11Johnson Controls A70HA-1G TWO CIRCUIT TEMP CONTROL FurnacePartSource.com CommitmentMSRP: $459.56Now: $355.11
Johnson Controls HVAC and Furnace Replacement Parts
Johnson Controls parts can support a wide range of HVAC, furnace, heating, cooling, building control, and mechanical system applications. This brand page includes available Johnson Controls and BASO Gas Products replacement components such as control valves, temperature controls, damper actuators, wall mount sensors, control modules, fan speed controls, pressure controls, and repair kits. Because many Johnson Controls parts are application-specific, use the exact part number from the existing component or equipment documentation whenever possible.
Choosing the Right Johnson Controls Part
Start by comparing the product listing with the label on the original part. Important details may include voltage, control range, temperature range, pressure range, actuator stroke, spring return or non-spring return design, wiring requirements, sensor type, mounting style, valve compatibility, and kit contents. Similar Johnson Controls parts may serve different control functions, so the product name alone is not always enough to confirm compatibility.
BASO Gas Products, Controls, Sensors, and Actuators
Available Johnson Controls parts may include BASO gas control components, temperature controllers, proportional actuators, damper actuators, humidity or wall mount sensors, Ethernet control modules, pressure controls, and fan speed control components. These parts may be used in compatible HVAC control systems, furnace assemblies, gas-related equipment, ventilation systems, and building automation applications depending on the model and installation requirements.
Use Part Numbers and Equipment Details to Confirm Fit
For the best match, verify the Johnson Controls part number, equipment model, system application, electrical rating, pressure or temperature rating, mounting configuration, and connection details before purchasing. If the original label is unreadable, use the equipment data plate, control panel documentation, service manual, or parts diagram to help identify the correct replacement.
Confirm Compatibility Before Ordering
Johnson Controls replacement parts can be technical, model-specific, and installation-sensitive. For gas controls, pressure controls, electrical controls, sensors, actuators, and control modules, confirm that the selected part matches the system requirements before purchase. If the replacement is being used in a safety-related or control-critical application, review the equipment documentation or consult a qualified HVAC professional before installation.