What are the specs for this Limit Switch?

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

IMAGE COMING SOON

Goodman

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

Name: OEM Goodman 350°F Rollout Limit Switch for GMNT120-5 — B1370154
Brand: Goodman
SKU: GOODMAN-11746
Price: 10.95 USD
Availability: InStock

SKU: GOODMAN-11746 Brand: Goodman

$10.95 $14.25

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014

SAM.gov Registered

Govt POs Accepted

The Goodman B1370154 Flame Rollout Switch is a genuine OEM manual-reset safety control for the GMNT120-5 gas furnace. Mounted near the burner assembly, it opens at 350°F if flames roll out of the burner box — a condition caused by blocked flue passages, a cracked heat exchanger, or restricted combustion air — and shuts down the furnace to prevent fire and carbon monoxide hazards.

Specifications

Trip temperature: 350°F
Reset: Manual (button reset)
Function: Flame rollout / burner box safety
Contacts: Normally closed (SPST)
Fit: Goodman/Amana GMNT120-5 and compatible furnaces

OEM vs. Generic

The genuine OEM B1370154 delivers the precise 350°F calibration and manual-reset action Goodman requires for burner safety. Because this switch guards against flame rollout, exact spec matching matters — generic substitutes with different trip points or reset behavior compromise a life-safety function. Choose OEM here.

Installation Difficulty

Easy (DIY-friendly). Remove two mounting screws and transfer the spade connectors. Power off at the breaker first. Critically: if this switch has tripped, do not simply reset and run — diagnose the root cause (flue blockage, cracked heat exchanger, or bad inducer) before returning the furnace to service.

Compatible with GMNT120-5. Confirm part number and location before ordering.

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 GMNT120-5 — B1370154?

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

Menu