What are the specs for this Limit Switch?

The correct replacement for Goodman model GMT140-5A — 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 GMT140-5A — 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 160F Primary Limit Switch for GMT140-5A — B1370187

Name: OEM Goodman 160F Primary Limit Switch for GMT140-5A — B1370187
Brand: Goodman
SKU: GOODMAN-12484
Price: 26.95 USD
Availability: InStock

SKU: GOODMAN-12484 Brand: Goodman

$26.95 $35.95

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The genuine Goodman B1370187 primary high-limit switch is the OEM temperature safety control for the Goodman GMT140-5A gas furnace and compatible Goodman/Amana models. Rated at 160°F, this auto-reset limit monitors supply-air temperature at the heat exchanger and shuts off the burners if the furnace overheats — the usual cause being a dirty filter, closed vents, or a failing blower. When a primary limit fails, you may see short-cycling on the heat call or no heat at all.

Specifications

Trip temperature: 160°F
Type: automatic-reset primary high-limit switch
Function: cuts burner operation on overheat
Fits: Goodman GMT140-5A and compatible Goodman & Amana furnaces
OEM part number: B1370187

OEM vs. Generic

The OEM B1370187 is factory-calibrated to the 160°F setpoint and uses the correct disc diameter and insertion depth for the GMT140-5A heat exchanger. Generic limits with the wrong setpoint or geometry lead to nuisance trips or unsafe operation. As a primary safety control, the genuine Goodman switch is the correct, reliable choice.

Installation Difficulty

Easy — mounted with two screws and two spade terminals on the heat-exchanger panel. Shut off power, transfer the wires one at a time, and secure the new switch. If it keeps tripping, check the filter and blower before assuming the switch is bad.

Disconnect power before servicing. Do not bypass the limit. Consult a licensed technician if trips persist.

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 160F Primary Limit S...

$26.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman GMT140-5A — B1370187?

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