What are the specs for this Limit Switch?

The correct replacement for Goodman model AMS80704BNAA — B1370155 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 AMS80704BNAA — B1370155.

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 120°F Auxiliary Limit Switch for AMS80704BNAA — B1370155

Name: OEM Goodman 120°F Auxiliary Limit Switch for AMS80704BNAA — B1370155
Brand: Goodman
SKU: GOODMAN-6925
Price: 11.96 USD
Availability: InStock

SKU: GOODMAN-6925 Brand: Goodman

$11.96 $15.95

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The Goodman B1370155 is a genuine OEM auxiliary limit switch engineered for the AMS80704BNAA gas furnace and compatible Goodman/Amana 80% AFUE models. This normally-closed thermal safety control opens at approximately 120°F to protect the heat exchanger and blower compartment from overheating, shutting down the burners if airflow is restricted or a blower fault occurs. Replacing a failed limit switch restores safe, code-compliant furnace operation.

Part number: B1370155
Type: Auxiliary (rollout/secondary) limit switch
Open temperature: 120°F, automatic reset
Configuration: Normally closed (N.C.)
Fits: AMS80704BNAA and related Goodman/Amana furnaces
Terminals: 1/4 in. quick-connect spade

OEM vs. Generic: This is a true Goodman OEM component with the exact trip temperature, bracket geometry, and mounting hole pattern the AMS80704BNAA was designed around. Generic universal limits often require bending brackets or splicing leads and may trip at the wrong temperature, causing nuisance lockouts. Choosing OEM guarantees a bolt-in fit and correct safety response.

Install difficulty: Easy (1/5). Cut furnace power, disconnect the two spade terminals, remove two mounting screws, and reverse to install. Typically a 10-minute repair for a technician; a confident DIYer can complete it, but always de-energize the unit and verify airflow before restarting.

Backed by fast shipping and exact-fit assurance for National HVAC Parts customers.

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 120°F Auxiliary Limi...

$11.96

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMS80704BNAA — B1370155?

Yes. This is the factory-specified OEM limit switch for the Goodman AMS80704BNAA — B1370155. 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 AMS80704BNAA — B1370155?

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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OEM Goodman 120°F Auxiliary Limit Switch for AMS80704BNAA — B1370155

Shipping Information

Return Policy

Frequently Asked Questions