What are the specs for this Limit Switch?

The correct replacement for Goodman model AMS80704BXAA — 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 AMS80704BXAA — 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 AMS80704BXAA — B1370155

Name: OEM Goodman 120°F Auxiliary Limit Switch for AMS80704BXAA — B1370155
Brand: Goodman
SKU: GOODMAN-6945
Price: 11.96 USD
Availability: InStock

SKU: GOODMAN-6945 Brand: Goodman

$11.96 $15.95

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Genuine Goodman B1370155 Auxiliary Limit Switch (120°F)

The Goodman B1370155 is an OEM auxiliary limit switch engineered as a factory-direct replacement for AMS80704BXAA gas furnaces and compatible Amana models built on the same 80% AFUE platform. This normally-closed thermal safety switch opens at 120°F to interrupt burner operation whenever it detects abnormal heat or a rollout condition, protecting the heat exchanger and surrounding cabinet from overheating.

Specifications

Type: Auxiliary / rollout limit switch
Trip point: 120°F (open on rise)
Reset: Automatic
Contacts: Normally closed (SPST)
Mount: Bracket / clip mount, OEM footprint
Fits: AMS80704BXAA and Goodman/Amana 80% furnaces

OEM vs. Generic

This is a genuine OEM Goodman part calibrated to the exact 120°F trip point specified for your furnace. Universal aftermarket switches often ship with generic bimetal discs whose trip tolerance drifts, causing nuisance lockouts or — worse — failing to open when needed. Choosing OEM guarantees the correct temperature rating, terminal style, and mounting geometry so the board's safety logic behaves exactly as designed.

Installation Difficulty

Easy (1/5). A basic repair most homeowners can complete in under 15 minutes: shut off power at the disconnect, disconnect the two spade terminals, unscrew the switch bracket, and swap in the new unit. No refrigerant handling or specialty tools required. If your furnace is locking out on a limit fault, always verify airflow (filter, blower, ductwork) before condemning the switch.

Backed by genuine Goodman quality. Questions on fitment? Contact info@nationalhvacparts.com.

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 AMS80704BXAA — B1370155?

Yes. This is the factory-specified OEM limit switch for the Goodman AMS80704BXAA — 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 AMS80704BXAA — 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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