What are the specs for this Limit Switch?

The correct replacement for Goodman model GMNT120-5D — B1370154 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 GMNT120-5D — B1370154.

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 350°F Rollout Limit Switch for GMNT120-5D — B1370154

Name: OEM Goodman 350°F Rollout Limit Switch for GMNT120-5D — B1370154
Brand: Goodman
SKU: GOODMAN-11766
Price: 10.95 USD
Availability: InStock

SKU: GOODMAN-11766 Brand: Goodman

$10.95 $14.95

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The Goodman B1370154 Rollout Limit Switch is a genuine OEM safety control for GMNT120-5D gas furnaces. This 350°F manual-reset switch monitors the burner area and instantly shuts off the gas valve if flame rolls out of the combustion chamber — protecting the heat exchanger and your home from overheating. If your furnace locks out on ignition or trips repeatedly, a tripped or failed rollout switch is a frequent culprit.

Specifications

Part Number: B1370154
Trip Temperature: 350°F
Type: Flame rollout limit switch, manual reset
Function: High-temperature burner safety cutoff
Fits: Goodman GMNT120-5D furnace (verify against your unit)
Brand: Goodman (OEM)

OEM vs. Generic

The OEM Goodman switch is calibrated to Goodman's exact 350°F trip point and mounting footprint, so it seats correctly and responds at the temperature the furnace was certified for. A generic equivalent with a matching 350°F rating can save money, but confirm the reset type and bracket style before ordering — safety controls are not the place for guesswork.

Installation

Difficulty: Easy to Moderate. Shut off power and gas, disconnect the two spade terminals, unscrew the switch from the burner assembly, and reverse to install. About 10–15 minutes. If a new switch trips again immediately, do not bypass it — investigate the underlying overheating cause.

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 350°F Rollout Limit ...

$10.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman GMNT120-5D — B1370154?

Yes. This is the factory-specified OEM limit switch for the Goodman GMNT120-5D — B1370154. 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 GMNT120-5D — B1370154?

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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