What are the specs for this Limit Switch?

The correct replacement for Goodman model GMP100-4 — 10123539 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 GMP100-4 — 10123539.

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 Manual Reset Limit Switch for GMP100-4 — 10123539

Name: OEM Goodman Manual Reset Limit Switch for GMP100-4 — 10123539
Brand: Goodman
SKU: GOODMAN-11883
Price: 6.95 USD
Availability: InStock

SKU: GOODMAN-11883 Brand: Goodman

$6.95 $9.25

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The Goodman 10123539 Manual Reset Limit Switch is a genuine OEM high-limit safety control for the Goodman GMP100-4 gas furnace. This switch monitors furnace temperature and opens the circuit if the unit overheats — protecting the heat exchanger and preventing dangerous conditions. As a manual reset device, it stays open after a trip and must be reset by hand, which alerts homeowners that an overheat event occurred and should be investigated (often a dirty filter or blocked airflow).

Specifications

Type: Manual reset high-limit / rollout switch
Function: Opens on overtemperature to shut off gas/burners
Reset: Manual (push-button)
OEM Part Number: 10123539
Fits: Goodman GMP100-4 furnace
Brand: Goodman (OEM)

OEM vs. Generic

Because this is a combustion safety component, an exact trip temperature is critical. This genuine OEM Goodman switch is calibrated to Goodman's factory limit setpoint. Generic switches may trip at the wrong temperature — too early causes nuisance shutdowns, too late defeats the safety function. Always use OEM for limit and rollout controls.

Install Difficulty: Easy

Rated Easy (2/5). Replacement takes about 15 minutes: shut off power and gas, disconnect the two spade terminals, remove the mounting screws, and install the new switch in the same location. Do not bypass a tripped limit switch. If the switch keeps tripping, have a licensed technician diagnose the underlying airflow or combustion issue.

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 Manual Reset Limit S...

$6.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman GMP100-4 — 10123539?

Yes. This is the factory-specified OEM limit switch for the Goodman GMP100-4 — 10123539. 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 GMP100-4 — 10123539?

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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