What are the specs for this Limit Switch?

The correct replacement for Goodman model GUPI100-4 — B1370912S 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 GUPI100-4 — B1370912S.

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 240°F Primary Limit Switch for GUPI100-4 — B1370912S

Name: OEM Goodman 240°F Primary Limit Switch for GUPI100-4 — B1370912S
Brand: Goodman
SKU: GOODMAN-13266
Price: 24.95 USD
Availability: InStock

SKU: GOODMAN-13266 Brand: Goodman

$24.95 $32.95

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Goodman B1370912S Primary Limit Switch (240°F, 7")

The Goodman B1370912S is a genuine OEM primary high-limit switch designed as a direct-fit replacement for the Goodman GUPI100-4 gas furnace. Mounted on the heat exchanger bulkhead, this normally-closed thermal switch opens the control circuit and shuts off the gas valve if supply air temperature exceeds its 240°F trip point — protecting the heat exchanger, cabinet, and ductwork from overheating caused by restricted airflow, a dirty filter, or a failed blower.

Specifications

OEM Part Number: B1370912S
Trip Temperature: 240°F (open on rise, auto-reset)
Insert Length: 7 inches
Type: Normally-closed primary high-limit safety switch
Compatible Model: Goodman GUPI100-4 (100,000 BTU furnace)

OEM vs. Generic

The OEM B1370912S is calibrated to the exact 240°F set point and 7-inch probe depth the GUPI100-4 heat exchanger requires. A generic switch with a different trip temperature or insert length can nuisance-trip during normal operation or, worse, fail to open when it should. Genuine Goodman parts ensure the safety circuit behaves exactly as the factory intended.

Installation Difficulty

Rating: Intermediate (2/5). Typically two mounting screws and two spade terminals. Disconnect power at the breaker first, note the wire positions, and confirm the insert length matches before installing. A confident DIYer can complete this in about 15 minutes.

Ships fast and backed by our 1-year warranty. Email info@nationalhvacparts.com with fitment questions.

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 240°F Primary Limit ...

$24.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman GUPI100-4 — B1370912S?

Yes. This is the factory-specified OEM limit switch for the Goodman GUPI100-4 — B1370912S. 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 GUPI100-4 — B1370912S?

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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