What are the specs for this Limit Switch?

The correct replacement for Goodman model WFM18140S5DNCC — 20162903 is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your Goodman equipment which lists the model number WFM18140S5DNCC — 20162903.

What symptoms indicate I need a new limit switch?

Common symptoms that indicate you need a new limit switch include unusual noises, intermittent operation, complete failure to operate, or visible damage. For specific diagnostic guidance, visit nationalhvacparts.com/pages/hvac-diagnostic.

Is this limit switch compatible with Bryant or Payne systems too?

Many Goodman parts are cross-compatible with Bryant and Payne systems since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across multiple brand labels with different model numbers. To verify cross-compatibility, check your Bryant or Payne equipment service manual for cross-compatible part numbers, or contact info@nationalhvacparts.com with your model number for confirmation.

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Goodman

OEM Goodman 150°F Primary Limit Switch for WFM18140S5DNCC — 20162903

Name: OEM Goodman 150°F Primary Limit Switch for WFM18140S5DNCC — 20162903
Brand: Goodman
SKU: GOODMAN-14169
Price: 8.95 USD
Availability: InStock

SKU: GOODMAN-14169 Brand: Goodman

$8.95 $11.95

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The Goodman 20162903 is a genuine OEM primary high-limit switch with a 150°F trip point, built for the WFM18140S5DNCC furnace. Mounted on the heat-exchanger/blower deck, this normally-closed thermal switch monitors supply-air temperature and opens the control circuit to shut off the burners if the furnace overheats — typically from restricted airflow such as a clogged filter or failed blower. A failed or drifting limit switch causes nuisance shutdowns or, worse, allows dangerous over-temp conditions.

Specifications

Type: Primary high-limit switch
Trip temperature: 150°F (opens on rise)
Configuration: Normally closed, automatic reset
Function: Over-temperature burner cutout
Fits: Goodman WFM18140S5DNCC and compatible models
OEM Part Number: 20162903

OEM vs. Generic

The OEM limit switch is calibrated to the precise 150°F trip point and disc geometry the furnace requires — essential for a safety control. A generic switch may match the rating at lower cost, but for any high-limit safety device we recommend OEM to guarantee the correct set point and reliable auto-reset behavior.

Install Difficulty

Easy (1 of 5). Roughly 10 minutes. Disconnect power, pull the two spade terminals, remove the mounting screws, and seat the new switch flat against the panel in the same orientation. If the old switch was tripping, correct the airflow problem (dirty filter, blocked returns, weak blower) before restoring service.

Shipping Information

Orders placed before 3PM CST ship same business day
Standard delivery: 2-5 business days
Express shipping available at checkout
Free shipping on orders over $75
Tracking number emailed upon shipment

Return Policy

30-day returns on unused parts in original packaging
Electrical parts (capacitors, contactors, control boards) are final sale once installed
Email info@nationalhvacparts.com to initiate a return
Refunds processed within 5-7 business days

OEM Goodman 150°F Primary Limit ...

$8.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman WFM18140S5DNCC — 20162903?

Yes. This is the factory-specified OEM limit switch for the Goodman WFM18140S5DNCC — 20162903. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.

How do I replace the limit switch on my Goodman WFM18140S5DNCC — 20162903?

Refer to your equipment service manual for model-specific steps. General approach: turn off power, photograph connections, remove old part, install new part, restore power and test. For gas components, hire a licensed technician. Email info@nationalhvacparts.com for guidance.

What symptoms mean I need a new limit switch?

Common symptoms: unusual noises, intermittent operation, complete failure, or visible damage. Visit our diagnostic hub for symptom-based troubleshooting.

Is this limit switch compatible with Bryant or Payne too?

Many Goodman parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.

Should I use OEM or aftermarket for my Goodman limit switch?

OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.

How fast does National HVAC Parts ship?

Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.

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