What are the specs for this Limit Switch?

The correct replacement for Goodman model OEM Goodman Stack Overtemp Limit Switch GUN075-3 — B1370109 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 OEM Goodman Stack Overtemp Limit Switch GUN075-3 — B1370109.

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 Stack Overtemp Limit Switch GUN075-3 — B1370109

Name: OEM Goodman Stack Overtemp Limit Switch GUN075-3 — B1370109
Brand: Goodman
SKU: GOODMAN-13133
Price: 8.95 USD
Availability: InStock

SKU: GOODMAN-13133 Brand: Goodman

$8.95 $11.95

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Goodman B1370109 Stack Overtemp Switch

The Goodman B1370109 is a genuine OEM stack overtemperature limit switch for the Goodman GUN075-3 furnace. It monitors flue/stack temperature and opens the control circuit if the furnace runs too hot — a safety response to restricted airflow, a dirty filter, a failed blower, or a blocked vent. Correct overtemp protection prevents heat-exchanger damage and hazardous operation.

Specifications

Type: Stack / high-limit overtemperature switch
Function: Opens circuit on flue overheat condition
OEM part number: B1370109
Compatible model: Goodman GUN075-3 furnace
Mounting: Direct OEM bracket fit

OEM vs. Generic

The OEM B1370109 is set to the precise trip temperature and mounting location engineered for the GUN075-3. Generic high-limits with different set points can cause short-cycling or fail to protect the heat exchanger. OEM ensures the switch trips exactly when the factory intended.

Install Difficulty

Easy — power off, swap the spade connections, and reuse the mounting screws. Plan 10–20 minutes. If the switch was tripping, clear the airflow restriction (filter, blower, ducting) before restarting the furnace.

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 Stack Overtemp Limit...

$8.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman OEM Goodman Stack Overtemp Limit Switch GUN075-3 — B1370109?

Yes. This is the factory-specified OEM limit switch for the Goodman OEM Goodman Stack Overtemp Limit Switch GUN075-3 — B1370109. 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 OEM Goodman Stack Overtemp Limit Switch GUN075-3 — B1370109?

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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