Carrier
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Carrier HH18HA291 290F M/R Limit Switch
Carrier
MSRP: $55.51Now: $42.05290F M/R Limit Switch FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order RequirementsMSRP: $55.51Now: $42.05 -
Carrier HH18HA296 Temperature Limit Switch
Carrier
MSRP: $30.94Now: $23.91Temperature Limit Switch FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order RequirementsMSRP: $30.94Now: $23.91 -
Carrier HH18HA297 SWITCH TEMP ACTIVE
Carrier
MSRP: $36.12Now: $27.36Carrier HH18HA297 SWITCH TEMP ACTIVE Item is Non-Cancelable / Non-Returnable FurnacePartSource.comMSRP: $36.12Now: $27.36 -
Carrier HH18HA301 TEMPERATURE SENSOR
Carrier
MSRP: $45.52Now: $35.18Carrier HH18HA301 TEMPERATURE SENSOR FurnacePartSource.com CommitmentMSRP: $45.52Now: $35.18 -
Carrier HH18HA320 TEMPERATURE SWITCH
Carrier
MSRP: $28.69Now: $22.17Carrier HH18HA320 TEMPERATURE SWITCH FurnacePartSource.com CommitmentMSRP: $28.69Now: $22.17 -
Carrier HH18HA415 15F BREAK 25F MAKE TEMP SWTICH
Carrier
MSRP: $21.43Now: $16.56Carrier HH18HA415 15F BREAK 25F MAKE TEMP SWTICH FurnacePartSource.com CommitmentMSRP: $21.43Now: $16.56 -
Carrier HH18HA420 90-120F AUTO Limit Switch
Carrier
MSRP: $66.31Now: $51.24Carrier HH18HA420 90-120F AUTO Limit Switch FurnacePartSource.com CommitmentMSRP: $66.31Now: $51.24 -
Carrier HH18HA430 100-130F Auto Limit Switch
Carrier
MSRP: $65.70Now: $49.78100-130F Auto Limit Switch FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order RequirementsMSRP: $65.70Now: $49.78 -
Carrier HH18HA435 100-135F Auto Limit Switch
Carrier
MSRP: $39.65Now: $30.64100-135F Auto Limit Switch FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order RequirementsMSRP: $39.65Now: $30.64 -
Carrier HH18HA440 100-140F Auto Limit Switch
Carrier
MSRP: $99.92Now: $77.21100-140F Auto Limit Switch FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order RequirementsMSRP: $99.92Now: $77.21 -
Carrier HH18HA450 SWITCH TEMP ACT
Carrier
MSRP: $151.09Now: $116.75Carrier HH18HA450 SWITCH TEMP ACT FurnacePartSource.com CommitmentMSRP: $151.09Now: $116.75 -
Carrier HH18HA454 Limit Switch
Carrier
MSRP: $168.55Now: $130.24Limit Switch FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order RequirementsMSRP: $168.55Now: $130.24 -
Carrier HH18HA460 100-160F Auto Limit Switch
Carrier
MSRP: $84.73Now: $65.47100-160F Auto Limit Switch FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order RequirementsMSRP: $84.73Now: $65.47 -
Carrier HH18HA461 160F M/R Limit Switch
Carrier
MSRP: $16.75Now: $12.94Carrier HH18HA461 160F M/R Limit Switch FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order...MSRP: $16.75Now: $12.94 -
Carrier HH18HA465 100-165F Auto Limit Switch
Carrier
MSRP: $22.39Now: $17.30100-165F Auto Limit Switch FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order RequirementsMSRP: $22.39Now: $17.30 -
Carrier HH18HA470 100-170F Auto Limit Switch
Carrier
MSRP: $8.17Now: $6.31100-170F Auto Limit Switch FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order RequirementsMSRP: $8.17Now: $6.31 -
Carrier HH18HA490 290F M/R SPST Rollout Switch
Carrier
MSRP: $18.17Now: $14.04Carrier HH18HA490 290F M/R SPST Rollout Switch FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order...MSRP: $18.17Now: $14.04 -
Carrier HH18HA493 101-200F Auto Limit Switch
Carrier
MSRP: $16.68Now: $12.89Carrier HH18HA493 101-200F Auto Limit Switch FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order...MSRP: $16.68Now: $12.89 -
Carrier HH18HA495 350F M/R Limit Switch
Carrier
MSRP: $17.14Now: $13.25350F M/R Limit Switch FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order RequirementsMSRP: $17.14Now: $13.25 -
Carrier HH18HA496 160-200F Auto Limit Switch
Carrier
MSRP: $16.73Now: $12.93Carrier HH18HA496 160-200F Auto Limit Switch FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order...MSRP: $16.73Now: $12.93
Carrier Furnace Parts by Model Number and Application
Carrier furnace and HVAC parts can vary by furnace series, equipment model, installation type, and system configuration. This category may include replacement components for compatible Carrier heating and cooling equipment, including ignitors, flame sensors, blower motors, control boards, relays, gas valves, switches, gaskets, pressure parts, support plates, and maintenance-related components. When replacing a Carrier furnace part, start with the exact model number from the equipment data plate and the part number from the existing component whenever available.
Finding the Right Carrier Replacement Part
Many Carrier part searches depend on model-specific details. Similar Carrier furnace models may use different boards, motors, sensors, valves, or ignition components depending on the series, voltage, cabinet size, fuel type, and production revision. Before selecting a replacement, compare the product listing with the original part label, service manual, parts diagram, or parts list for the equipment. For older Carrier furnaces, the model number and existing component label are especially important because replacement requirements may differ from newer systems.
Common Carrier Furnace and HVAC Components
Available Carrier parts may include hot surface ignitor kits, blower motors, gas valves, control boards, relay boards, gasket kits, switches, sensors, brackets, support plates, and other HVAC service parts. Ignition and flame-sensing parts help support burner startup and flame verification in compatible furnace systems. Blower motors and related motor components support airflow operation. Gas valves, pressure switches, and safety controls should be selected carefully because ratings, wiring, mounting, and fuel application can affect compatibility.
Using Carrier Parts Diagrams, Lists, and Existing Labels
If you are searching for Carrier furnace parts by model number, use the full model number rather than only the furnace name or series. Searches for Carrier parts catalogs, parts diagrams, and furnace parts lists are useful starting points, but the final replacement should be confirmed against the product details on the listing. Check key details such as voltage, horsepower, RPM, pressure rating, gas type, wiring connections, mounting style, dimensions, and kit contents before purchasing.
Confirm Compatibility Before Ordering
For the best match, compare the Carrier model number, serial number, original part number, and component specifications before placing an order. If the existing part number is missing or unreadable, review the equipment documentation or parts diagram to narrow the correct replacement. For gas, ignition, electrical, and safety-related furnace components, installation and replacement should follow the equipment documentation and applicable service requirements.