What are the specs for this Limit Switch?

The correct replacement for Goodman model DMP100 — 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 DMP100 — 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.

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Goodman

OEM Goodman Manual Reset Limit Switch for DMP100 — 10123529

Name: OEM Goodman Manual Reset Limit Switch for DMP100 — 10123529
Brand: Goodman
SKU: GOODMAN-9506
Price: 7.95 USD
Availability: InStock

SKU: GOODMAN-9506 Brand: Goodman

$7.95 $10.95

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The Goodman 10123529 is a genuine OEM manual reset high-limit switch designed for DMP100-42AA gas furnaces and compatible Goodman/Amana models. This safety-critical component monitors furnace temperature and cuts power to the gas valve when it senses dangerous overheating — protecting the heat exchanger, wiring, and cabinet from heat damage. Because it is a manual reset switch, it must be pressed to restore operation after a trip, prompting the homeowner or technician to investigate the root cause (dirty filter, blocked airflow, or failing blower).

Specifications

Part Number: 10123529
Type: Manual Reset High-Limit Switch
Function: Overheat safety cutout
Reset: Manual (push-button)
Fits: Goodman DMP100-42AA and related furnace models

OEM vs. Generic

The OEM Goodman 10123529 is calibrated to the exact trip temperature your furnace's control board and heat exchanger expect. Generic limit switches with the wrong set-point may trip early (nuisance shutdowns) or, worse, trip late — defeating the safety purpose. For any furnace safety control, genuine OEM is the responsible choice.

Installation Difficulty

Easy. The switch mounts with two screws and two spade connectors. Allow 15–20 minutes. Shut off power at the breaker before servicing. If the switch trips again after reset, have the furnace inspected — a repeat trip signals an airflow or heat-exchanger problem.

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 DMP100 — 10123529?

Yes. This is the factory-specified OEM limit switch for the Goodman DMP100 — 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 DMP100 — 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.

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