What are the specs for this Limit Switch?

The correct replacement for Goodman model GMP125-5 — 10123529 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 GMP125-5 — 10123529.

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.

IMAGE COMING SOON

Goodman

OEM Goodman Manual Reset Limit Switch for GMP125-5 — 10123529

Name: OEM Goodman Manual Reset Limit Switch for GMP125-5 — 10123529
Brand: Goodman
SKU: GOODMAN-11921
Price: 7.95 USD
Availability: InStock

SKU: GOODMAN-11921 Brand: Goodman

$7.95 $10.95

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014

SAM.gov Registered

Govt POs Accepted

The Goodman 10123529 Manual Reset Limit Switch is a genuine OEM high-temperature safety control for the GMP125-5 gas furnace and compatible models. This normally-closed switch opens to cut the gas valve if it senses a flame rollout or over-temperature condition, protecting the heat exchanger and cabinet. Because it is a manual reset device, it must be pressed to restore operation after a trip — by design, so a technician inspects the cause before the furnace runs again.

Specifications

Part number: 10123529
Type: Manual reset (button) limit / rollout switch
Contacts: Normally closed, opens on overheat
Function: Flame rollout / high-limit safety cutout
Fits: GMP125-5 and compatible Goodman furnaces

OEM vs. Generic

This OEM switch is calibrated to Goodman's exact trip temperature. Generic substitutes may open at the wrong setpoint, causing either nuisance lockouts or, worse, failure to trip during a real rollout. For a safety-critical control, use the OEM part.

Install Difficulty

Easy (2/5). Disconnect power, unplug the two spade terminals, remove the mounting screws, and install the new switch in the same orientation. If the switch tripped, always diagnose the overheat cause (dirty filter, blocked flue, cracked heat exchanger) before returning the furnace to 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 Manual Reset Limit S...

$7.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman GMP125-5 — 10123529?

Yes. This is the factory-specified OEM limit switch for the Goodman GMP125-5 — 10123529. 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 GMP125-5 — 10123529?

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.

Menu