What are the specs for this Limit Switch?

The correct replacement for Goodman model GMNT100-4 Furnace — 1370902S 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 GMNT100-4 Furnace — 1370902S.

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 210F Limit Switch 3 in for GMNT100-4 Furnace — 1370902S

Name: OEM Goodman 210F Limit Switch 3 in for GMNT100-4 Furnace — 1370902S
Brand: Goodman
SKU: GOODMAN-11717
Price: 23.95 USD
Availability: InStock

SKU: GOODMAN-11717 Brand: Goodman

$23.95 $31.95

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Goodman 1370902S Limit Switch (210°F, 3 in)

The Goodman 1370902S high-limit switch is a genuine OEM safety control for the GMNT100-4 gas furnace. This temperature-actuated switch is rated to open at approximately 210°F and mounts on a 3-inch insertion depth. It protects the furnace by cutting power to the gas valve if supply-air temperature rises too high — a condition usually caused by a dirty filter, blocked ductwork, or a failed blower. When a limit switch fails open or drifts, the furnace short-cycles on heat or refuses to fire.

Specifications

OEM Part Number: 1370902S
Open Temperature: 210°F (auto-reset)
Mounting Depth: 3 inch
Type: Snap-disc high-limit safety switch
Compatible Model: GMNT100-4 furnace
Brand: Goodman / Amana

OEM vs. Generic

The OEM switch is calibrated to the exact 210°F trip point and 3-inch stem length the GMNT100-4 heat exchanger requires. Substituting a generic limit with a different set point or insertion depth can allow overheating or cause false trips. For correct safety operation, use OEM.

Installation Difficulty

Easy (2/5). Disconnect power, remove the two mounting screws and the spade wire connectors, and install the replacement in the same orientation. Roughly 15 minutes. Verify the disc sits flush against the mounting surface for accurate sensing.

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 210F Limit Switch 3 ...

$23.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman GMNT100-4 Furnace — 1370902S?

Yes. This is the factory-specified OEM limit switch for the Goodman GMNT100-4 Furnace — 1370902S. 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 GMNT100-4 Furnace — 1370902S?

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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