What are the specs for this Limit Switch?

The correct replacement for Goodman model AMH80905CNAA — 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 AMH80905CNAA — 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 AMH80905CNAA — B1370145

Name: OEM Goodman 300°F Rollout Limit Switch for AMH80905CNAA — B1370145
Brand: Goodman
SKU: GOODMAN-5849
Price: 4.95 USD
Availability: InStock

SKU: GOODMAN-5849 Brand: Goodman

$4.95 $6.95

OEM Guaranteed

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30-Day Returns

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Texas CMBL #19328542014

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The Goodman B1370145 Rollout Limit Switch is a genuine OEM 300°F manual-reset safety control for the AMH80905CNAA 80% AFUE gas furnace. Mounted on the burner assembly, this rollout switch opens the ignition circuit if flames roll out of the burner box due to a blocked heat exchanger, poor venting, or restricted airflow — shutting the furnace down to prevent overheating and fire hazard. A tripped or failed switch is a common cause of no-heat calls and must be replaced with the correct temperature-rated OEM part.

Specifications

OEM Part Number: B1370145
Trip Temperature: 300°F (manual reset)
Function: Flame rollout safety limit
Fits: Goodman/Amana AMH80905CNAA and compatible furnaces
Single-pole, normally-closed contacts

OEM vs. Generic

This safety device must match the exact 300°F trip point and bracket geometry. OEM guarantees the correct calibration and fit; a generic switch with the wrong set-point can fail to protect against rollout. Never substitute a different temperature rating on a safety control — always use OEM.

Install Difficulty

Easy (1/5). Disconnect power and gas, remove the two wire leads and mounting screw, install the new switch, and reconnect. Under 15 minutes. Important: if this switch has tripped, diagnose and correct the root cause (venting, heat exchanger, airflow) 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 ...

$4.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMH80905CNAA — B1370145?

Yes. This is the factory-specified OEM limit switch for the Goodman AMH80905CNAA — 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 AMH80905CNAA — 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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