What are the specs for this Limit Switch?

The correct replacement for Goodman model GMNT115-5B — B1370187 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 GMNT115-5B — B1370187.

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 160°F Primary Limit Switch for GMNT115-5B — B1370187

Name: OEM Goodman 160°F Primary Limit Switch for GMNT115-5B — B1370187
Brand: Goodman
SKU: GOODMAN-11737
Price: 10.95 USD
Availability: InStock

SKU: GOODMAN-11737 Brand: Goodman

$10.95 $14.25

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The Goodman B1370187 is a genuine OEM primary high-limit switch designed for the GMNT115-5B gas furnace and compatible Goodman/Amana units. Positioned on the heat-exchanger bulkhead, this 160°F normally-closed control monitors supply-air temperature and shuts off the burners if the furnace overheats due to a dirty filter, blocked ductwork, or blower failure.

Specifications

Trip temperature: 160°F primary high limit
Type: Primary limit switch, normally closed, auto-reset
Fits: Goodman GMNT115-5B and related furnace platforms
Application: Main furnace overheat protection
Genuine OEM Goodman replacement part

OEM vs. Generic

The OEM B1370187 is factory-set to Goodman's 160°F specification with the correct probe length and mounting flange. Generic limits frequently use different trip temperatures or probe depths, leading to short-cycling or false trips. For proper furnace operation, OEM is the safe choice.

Install Difficulty

Easy (1/5). Power off at the breaker, note wire orientation, remove two mounting screws, and slide the new limit into the same slot. Typically under 20 minutes.

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 160°F Primary Limit ...

$10.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman GMNT115-5B — B1370187?

Yes. This is the factory-specified OEM limit switch for the Goodman GMNT115-5B — B1370187. 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 GMNT115-5B — B1370187?

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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