What are the specs for this Rollout Switch?

The correct replacement for Goodman model GMT135-5 — B1370145 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 GMT135-5 — B1370145.

What symptoms indicate I need a new rollout switch?

Common symptoms that indicate you need a new rollout 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 rollout 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 300°F Rollout Switch for GMT135-5 — B1370145

Name: OEM Goodman 300°F Rollout Switch for GMT135-5 — B1370145
Brand: Goodman
SKU: GOODMAN-12458
Price: 4.95 USD
Availability: InStock

SKU: GOODMAN-12458 Brand: Goodman

$4.95 $6.49

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The Goodman B1370145 is a genuine OEM flame rollout switch rated to trip at 300°F for the GMT135-5 gas furnace. This manual-reset safety control mounts near the burner box and instantly cuts power to the gas valve if flame rolls out of the heat exchanger — a serious hazard usually caused by a blocked flue, cracked heat exchanger, or restricted combustion air. If your furnace locks out and the rollout switch has tripped, the underlying cause must be corrected before resetting.

Specifications

Fits: Goodman GMT135-5 furnace
Trip temperature: 300°F
Reset type: Manual (push-button)
Function: Flame rollout safety limit
OEM part number: B1370145
Two-terminal, normally-closed contacts

OEM vs. Generic

Safety limits must trip at their exact rated temperature. The genuine Goodman B1370145 is calibrated to 300°F and carries the correct mounting and terminal configuration. Generic switches with loose tolerances can nuisance-trip or, worse, fail to open when they should. Never substitute a different temperature rating on a safety control.

Installation

Difficulty: Easy (DIY-friendly). Disconnect power, note wire positions, remove the mounting screws, transfer the two spade connectors to the new switch, and remount. Under 10 minutes. Important: diagnose why the switch tripped before returning the furnace to service.

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 300°F Rollout Switch...

$4.95

Frequently Asked Questions

Does this Rollout Switch fit my Goodman GMT135-5 — B1370145?

Yes. This is the factory-specified OEM rollout switch for the Goodman GMT135-5 — B1370145. 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 rollout switch on my Goodman GMT135-5 — B1370145?

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 rollout switch?

Common symptoms: unusual noises, intermittent operation, complete failure, or visible damage. Visit our diagnostic hub for symptom-based troubleshooting.

Is this rollout 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 rollout 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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