What are the specs for this Limit Switch?

The correct replacement for Goodman model GMN080-4 — 1370903S 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 GMN080-4 — 1370903S.

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 240F Primary Limit Switch for GMN080-4 — 1370903S

Name: OEM Goodman 240F Primary Limit Switch for GMN080-4 — 1370903S
Brand: Goodman
SKU: GOODMAN-11573
Price: 29.95 USD
Availability: InStock

SKU: GOODMAN-11573 Brand: Goodman

$29.95 $39.95

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Goodman 1370903S Primary Limit Switch (240°F, 3")

The 1370903S primary limit switch is the OEM high-temperature safety control for Goodman and Amana GMN080-4 gas furnaces. Mounted to the heat-exchanger panel with a 3-inch insertion length, it opens at approximately 240°F to shut off the burners if airflow is lost — for example from a clogged filter, failed blower, or blocked duct — protecting the heat exchanger from cracking.

Specifications

OEM part number: 1370903S
Type: Primary high-limit switch
Trip temperature: 240°F
Insertion depth: 3 inches
Fits: Goodman & Amana GMN080-4 (80,000 BTU) furnaces

OEM vs. Generic

The OEM 1370903S carries the exact 240°F trip point and 3-inch probe for this cabinet. Because this is a safety limit, an incorrect temperature rating or probe length can either nuisance-trip in normal operation or fail to protect the heat exchanger. We strongly recommend OEM for any safety control.

Installation Difficulty

Easy — about 15 minutes. Shut off gas and power, remove the two mounting screws, transfer the wires, and install the new switch at the same depth. Confirm the underlying airflow problem is resolved first. Always shut off gas and electrical power before servicing.

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 240F Primary Limit S...

$29.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman GMN080-4 — 1370903S?

Yes. This is the factory-specified OEM limit switch for the Goodman GMN080-4 — 1370903S. 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 GMN080-4 — 1370903S?

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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