What are the specs for this Limit Switch?

The correct replacement for Goodman model GMT140-5D — B1370145 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 GMT140-5D — B1370145.

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 300°F Rollout Limit Switch for GMT140-5D — B1370145

Name: OEM Goodman 300°F Rollout Limit Switch for GMT140-5D — B1370145
Brand: Goodman
SKU: GOODMAN-12495
Price: 4.95 USD
Availability: InStock

SKU: GOODMAN-12495 Brand: Goodman

$4.95 $6.95

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Goodman B1370145 300°F Flame Rollout Switch

The Goodman B1370145 is a genuine OEM manual-reset flame rollout limit switch engineered for the GMT140-5D gas furnace and compatible Goodman/Amana models. Mounted on the burner assembly, this safety control opens the ignition circuit and shuts down the furnace if flame rolls out of the combustion chamber — protecting your home from overheating and unsafe operation. When your furnace locks out or won't fire, a tripped rollout switch is one of the most common culprits.

Specifications

Trip temperature: 300°F (opens on rise)
Reset type: Manual push-button reset
Circuit: Normally closed (N.C.)
Mount: Burner-box bracket, 1/4" quick-connect terminals
OEM Part Number: B1370145
Fits: Goodman GMT140-5D and select GMT/GMP series furnaces

OEM vs. Generic

Our OEM Goodman switch is calibrated to the exact 300°F trip point your furnace's safety logic expects, ensuring proper lockout timing and full warranty compliance. Universal aftermarket switches may vary in trip tolerance and terminal fit, risking nuisance trips or delayed shutdowns. For a life-safety component, factory calibration matters.

Installation Difficulty

Easy (1/5). Cut power at the breaker, unplug the two spade terminals, remove one or two mounting screws, and swap. Most DIYers finish in under 15 minutes. Always confirm the root cause of a rollout trip (blocked flue, cracked heat exchanger, dirty burners) 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 300°F Rollout Limit ...

$4.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman GMT140-5D — B1370145?

Yes. This is the factory-specified OEM limit switch for the Goodman GMT140-5D — B1370145. 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 GMT140-5D — B1370145?

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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