What are the specs for this Limit Switch?

The correct replacement for Goodman model AMH80905CNAC — 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 AMH80905CNAC — B1370145.

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 300°F Rollout Limit Switch for AMH80905CNAC — B1370145

Name: OEM Goodman 300°F Rollout Limit Switch for AMH80905CNAC — B1370145
Brand: Goodman
SKU: GOODMAN-B1370145
Price: 14.95 USD
Availability: InStock

SKU: GOODMAN-B1370145 Brand: Goodman

$14.95 $19.95

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Goodman B1370145 Flame Rollout Limit Switch (300°F)

The Goodman B1370145 is a genuine OEM manual-reset flame rollout limit switch rated to trip at 300°F, engineered for the AMH80905CNAC and other compatible Goodman/Amana 80% AFUE furnaces. Mounted on the burner box, this critical safety device instantly cuts power to the gas valve if flames roll out of the heat exchanger — a condition typically caused by a cracked heat exchanger, blocked flue, or failing inducer. When it trips, the furnace will not restart until the fault is corrected and the button is manually reset, protecting the home from combustion gases.

Specifications

Trip temperature: 300°F
Reset type: manual (push-button)
Function: flame rollout safety shutdown
Fit: Goodman/Amana AMH80905CNAC and compatible 80% furnaces
OEM part number: B1370145

OEM vs. Generic

Because this is a life-safety component, precise trip temperature and terminal geometry matter. The OEM B1370145 is factory-calibrated to 300°F with the exact bracket and quick-connect spacing for a plug-and-play fit. Generic substitutes with a different setpoint can either nuisance-trip or, worse, fail to protect against a genuine rollout event.

Install Difficulty

Easy to moderate. Two mounting screws and two spade connectors. Estimated time: 15–20 minutes. Shut off power and gas first, and diagnose the root cause of any rollout 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 Limit ...

$14.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMH80905CNAC — B1370145?

Yes. This is the factory-specified OEM limit switch for the Goodman AMH80905CNAC — 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 limit switch on my Goodman AMH80905CNAC — 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 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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