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: $23.79Now: $18.39Temperature Limit Switch FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order RequirementsMSRP: $23.79Now: $18.39 -
Carrier HH18HA297 SWITCH TEMP ACTIVE
Carrier
MSRP: $36.12Now: $27.36Carrier HH18HA297 SWITCH TEMP ACTIVE Item is Non-Cancelable / Non-Returnable FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when...MSRP: $36.12Now: $27.36 -
Carrier HH18HA415 15F BREAK 25F MAKE TEMP SWTICH
Carrier
MSRP: $27.01Now: $20.87Carrier HH18HA415 15F BREAK 25F MAKE TEMP SWTICH FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No...MSRP: $27.01Now: $20.87 -
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: $31.52Now: $24.35100-135F Auto Limit Switch FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order RequirementsMSRP: $31.52Now: $24.35 -
Carrier HH18HA440 100-140F Auto Limit Switch
Carrier
MSRP: $78.99Now: $61.03100-140F Auto Limit Switch FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order RequirementsMSRP: $78.99Now: $61.03 -
Carrier HH18HA450 SWITCH TEMP ACT
Carrier
MSRP: $113.72Now: $87.87Carrier HH18HA450 SWITCH TEMP ACT FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order...MSRP: $113.72Now: $87.87 -
Carrier HH18HA454 Limit Switch
Carrier
MSRP: $140.73Now: $108.74Limit Switch FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order RequirementsMSRP: $140.73Now: $108.74 -
Carrier HH18HA460 100-160F Auto Limit Switch
Carrier
MSRP: $66.48Now: $51.37100-160F Auto Limit Switch FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order RequirementsMSRP: $66.48Now: $51.37 -
Carrier HH18HA461 160F M/R Limit Switch
Carrier
MSRP: $13.84Now: $10.70Carrier 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: $13.84Now: $10.70 -
Carrier HH18HA465 100-165F Auto Limit Switch
Carrier
MSRP: $18.00Now: $13.91100-165F Auto Limit Switch FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order RequirementsMSRP: $18.00Now: $13.91 -
Carrier HH18HA470 100-170F Auto Limit Switch
Carrier
MSRP: $8.53Now: $6.59100-170F Auto Limit Switch FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order RequirementsMSRP: $8.53Now: $6.59 -
Carrier HH18HA490 290F M/R SPST Rollout Switch
Carrier
MSRP: $14.64Now: $11.31Carrier HH18HA490 290F M/R SPST Rollout Switch FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No...MSRP: $14.64Now: $11.31 -
Carrier HH18HA493 101-200F Auto Limit Switch
Carrier
MSRP: $13.50Now: $10.43Carrier HH18HA493 101-200F Auto Limit Switch FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum...MSRP: $13.50Now: $10.43 -
Carrier HH18HA495 350F M/R Limit Switch
Carrier
MSRP: $13.38Now: $10.34350F M/R Limit Switch FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order RequirementsMSRP: $13.38Now: $10.34 -
Carrier HH18HA496 160-200F Auto Limit Switch
Carrier
MSRP: $12.95Now: $10.01Carrier 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: $12.95Now: $10.01 -
Carrier HH18HA498 170-210F AUTO Limit Switch
Carrier
MSRP: $11.43Now: $8.84Carrier HH18HA498 170-210F AUTO Limit Switch FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum...MSRP: $11.43Now: $8.84 -
Carrier HH18HA499 125-165F Auto Limit Switch
Carrier
MSRP: $11.86Now: $9.17125-165F Auto Limit Switch FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order RequirementsMSRP: $11.86Now: $9.17 -
Carrier HH18HA502 140-180F Auto Limit Switch
Carrier
MSRP: $12.87Now: $9.94140-180F Auto Limit Switch FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order RequirementsMSRP: $12.87Now: $9.94
Carrier Furnace & HVAC Replacement Parts
Carrier is a leading HVAC brand with a long-standing reputation for reliable heating and cooling systems. When a Carrier unit requires service, sourcing the correct OEM replacement parts—such as blower motors, ignition modules, flame sensors, control boards, gas valves, and limit switches—is vital for restoring performance and maintaining safety.
Maintenance & Repair Focus
Maintenance of a Carrier system often involves replacing wear-items and diagnostic parts. Typical replacement part categories include:
- Ignitors & Flame Sensors – For safe burner ignition and flame detection.
- Blower Motors & Capacitors – To restore proper airflow and system efficiency.
- Gas Valves & Pressure Switches – To ensure correct fuel delivery and combustion safety.
- Control Boards & Limit Switches – To maintain proper operation of sequence logic and safety limits.
- Wiring Harnesses & Filters – Supporting reliable connectivity and airflow integrity.
Why OEM Carrier Parts Matter
Using genuine Carrier replacement parts ensures:
- Exact fit for your model and serial number.
- Maintained efficiency and safety ratings consistent with factory standards.
- Compatibility with control logic and system design.
Carrier itself states that “Factory Authorized Parts … preserve the original efficiency of the system.” By selecting OEM or approved equivalent parts, you avoid common pitfalls of mismatched replacements that may degrade performance or invalidate warranty conditions.
How to Select the Correct Part
Before ordering, verify:
- The model number and serial number of your Carrier unit.
- The part number or description of the failing or service component.
- Whether your system is residential or commercial, as system design may differ significantly.
Tools such as Carrier’s official parts diagrams and OEM lookup references can help ensure you identify the right component. Once you have accurate details, sourcing an exact match will reduce downtime and maintain full system function.
FAQs
How do I find the right OEM part for my Carrier system?
Locate the model and serial number on your unit’s rating plate, then match that to the part number in Carrier’s OEM parts list or diagrams.
Why should I use Carrier-branded replacement parts rather than generic equivalents?
Carrier-branded (or Factory Authorized) parts are engineered to the original specifications, ensuring proper fit, performance, and longevity.
What are the most commonly replaced parts in Carrier furnaces?
Commonly replaced parts include ignitors, flame sensors, blower motors, control boards, and gas valves—typically due to wear or age.
Can I service a Carrier commercial unit the same as a residential unit?
The same principles apply—correct part selection, model verification, and maintenance best practices—but commercial systems often use higher-capacity components and may require specialized service procedures.
Does replacing a part with an OEM Carrier component improve efficiency?
Yes. A correct, functioning OEM replacement part helps your system operate at its designed efficiency, prevents unnecessary cycling or faults, and maintains original performance.
For more information, visit Furnace Part Source or explore Carrier’s official resources for part identification and system support. You can also consult Carrier part diagrams and Repair Clinic for additional guidance.