What are the specs for this Limit Switch?

The correct replacement for Goodman model GMT140-5 — B1370192 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 GMT140-5 — B1370192.

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 230°F Primary Limit Switch for GMT140-5 — B1370192

Name: OEM Goodman 230°F Primary Limit Switch for GMT140-5 — B1370192
Brand: Goodman
SKU: GOODMAN-B1370192
Price: 17.95 USD
Availability: InStock

SKU: GOODMAN-B1370192 Brand: Goodman

$17.95 $23.95

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The Goodman B1370192 Primary Limit Switch is a genuine OEM high-limit safety control for GMT140-5 gas furnaces. Mounted on the heat exchanger plenum, this 230°F switch opens the control circuit and shuts off the burners if supply air temperature climbs too high — the main defense against a cracked or overheated heat exchanger. If your furnace short-cycles on heat or the burners light and then drop out, a faulty primary limit is a prime suspect.

Specifications

Trip temperature: 230°F (opens on rise)
Type: Primary high-limit control
Reset: Automatic (snap-disc)
Terminals: 1/4 in. quick-connect spade
Fits: Goodman / Amana GMT140-5 and compatible furnace platforms

OEM vs. Generic

The OEM B1370192 guarantees the exact 230°F setpoint, insertion depth, and bracket the GMT140-5 was designed around. Generic limits with the wrong probe length or trip point can nuisance-trip or, worse, fail to protect the heat exchanger. For a primary safety limit, genuine OEM is the recommended replacement.

Install Difficulty

Easy (2/5). Kill power at the breaker, photograph and remove the two wires, back out the mounting screws, and install the new snap-disc in the same orientation. About 20–30 minutes. Persistent tripping after replacement points to an airflow restriction or a failing blower — have it inspected.

Verify your furnace model and part number 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 230°F Primary Limit ...

$17.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman GMT140-5 — B1370192?

Yes. This is the factory-specified OEM limit switch for the Goodman GMT140-5 — B1370192. 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 GMT140-5 — B1370192?

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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