What are the specs for this Limit Switch?

The correct replacement for Goodman model GMP125-4 Furnace — 10728343 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 GMP125-4 Furnace — 10728343.

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 Limit Switch for GMP125-4 Furnace — 10728343

Name: OEM Goodman Limit Switch for GMP125-4 Furnace — 10728343
Brand: Goodman
SKU: GOODMAN-11906
Price: 29.95 USD
Availability: InStock

SKU: GOODMAN-11906 Brand: Goodman

$29.95 $39.95

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Goodman 10728343 Furnace Limit Switch

The Goodman 10728343 limit switch is a factory-specified safety control for GMP125-4 gas furnaces. Mounted on the heat exchanger or burner assembly, it senses supply-air or heat-exchanger temperature and interrupts the burner circuit if the furnace exceeds its safe operating range. This prevents heat-exchanger cracking and downstream damage caused by restricted airflow or blower failure, making it one of the most important safety devices in the furnace.

Specifications

Type: High-limit temperature switch
Compatible model: Goodman GMP125-4 furnace
Function: Heat-exchanger overheat protection
Terminals: Quick-connect spade terminals
Fit: Direct OEM replacement

OEM vs. Generic

Genuine Goodman OEM 10728343 arrives pre-calibrated to the correct trip and reset temperatures for the GMP125-4. Generic replacements often use approximate ratings that lead to short-cycling or delayed cutoff. Choosing OEM guarantees the furnace's built-in safety response matches Goodman's original engineering specification.

Installation Difficulty

Easy (1/5). Disconnect furnace power, remove the two spade terminals, unscrew the switch, and reverse the process with the new part. No special tools required. Verify airflow and filter condition to avoid repeat trips.

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 Limit Switch for GMP...

$29.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman GMP125-4 Furnace — 10728343?

Yes. This is the factory-specified OEM limit switch for the Goodman GMP125-4 Furnace — 10728343. 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 GMP125-4 Furnace — 10728343?

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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