What are the specs for this Limit Switch?

The correct replacement for Goodman model WFM18090S4BXCC — 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 WFM18090S4BXCC — 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 WFM18090S4BXCC — 20162903

Name: OEM Goodman 150°F Primary Limit Switch for WFM18090S4BXCC — 20162903
Brand: Goodman
SKU: GOODMAN-14107
Price: 26.95 USD
Availability: InStock

SKU: GOODMAN-14107 Brand: Goodman

$26.95 $34.95

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Goodman 20162903 Primary Limit Switch (150°F)

The Goodman 20162903 is a primary high-limit switch with a 150°F trip point, designed for the WFM18090S4BXCC gas furnace and compatible Goodman/Amana models. Mounted on the heat exchanger or blower deck, this normally-closed control opens when supply-air temperature exceeds its rating and automatically closes once temperatures return to safe levels — protecting the furnace from overheating caused by restricted airflow, a dirty filter, or a failed blower.

Specifications

Trip temperature: 150°F (open on rise)
Type: Primary high-limit, auto-reset
Contacts: Normally closed
Terminals: 1/4 in. quick-connect spade
Fit: Goodman WFM18090S4BXCC and cross-compatible furnaces

OEM vs. Generic

The trip temperature and mounting depth are matched exactly on this genuine Goodman OEM switch. A generic limit with a different trip point or probe length can cause nuisance shutdowns or fail to protect the heat exchanger. For a temperature-critical safety device, OEM calibration matters.

Install Difficulty

Easy (2/5). Disconnect power at the breaker, pull the two spade terminals, remove the mounting screws, and install the replacement in the same orientation. About 10–15 minutes with a nut driver. If the limit continues to trip, check the air filter, blower operation, and ductwork for airflow restrictions.

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 ...

$26.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman WFM18090S4BXCC — 20162903?

Yes. This is the factory-specified OEM limit switch for the Goodman WFM18090S4BXCC — 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 WFM18090S4BXCC — 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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