What are the specs for this Limit Switch?

The correct replacement for Goodman model AMS80905CNAA — 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 AMS80905CNAA — 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/Amana 120°F Auxiliary Limit Switch for AMS80905CNAA — B1370155

Name: OEM Goodman/Amana 120°F Auxiliary Limit Switch for AMS80905CNAA — B1370155
Brand: Goodman
SKU: GOODMAN-7109
Price: 11.96 USD
Availability: InStock

SKU: GOODMAN-7109 Brand: Goodman

$11.96 $15.95

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Goodman B1370155 Auxiliary Limit Switch (120°F)

The Goodman B1370155 is a genuine OEM 120°F auxiliary limit switch for the Amana/Goodman AMS80905CNAA 80% AFUE gas furnace. Typically mounted in the blower compartment, this secondary safety opens the control circuit if temperatures climb too high due to restricted airflow — a dirty filter, blocked return, failed blower, or closed registers. It backs up the primary high limit to protect the heat exchanger from overheating.

Specifications

Part number: B1370155
Trip temperature: 120°F
Reset: Automatic (closes on cooldown)
Type: Auxiliary / secondary high-limit switch
Fits: AMS80905CNAA and compatible Goodman/Amana furnaces

OEM vs. Generic

This genuine OEM switch is set to the precise 120°F trip point and mounting footprint specified for this furnace. As a safety limit, the temperature calibration matters: a generic substitute with a different set point can cause repeated nuisance shutdowns or fail to protect the unit. Choose the OEM part for correct, code-compliant operation.

Installation Difficulty

Easy (2/5). Turn off power, disconnect the two spade terminals, remove the mounting screws, and fit the replacement in the identical location and orientation. If the limit has been tripping, correct the airflow restriction (replace the filter, clear the return, verify blower operation) before restoring service. Cycle the furnace fully to confirm normal operation.

Compatible with Amana and Goodman furnaces. Verify your model and part number before ordering.

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/Amana 120°F Auxiliar...

$11.96

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMS80905CNAA — B1370155?

Yes. This is the factory-specified OEM limit switch for the Goodman AMS80905CNAA — 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 AMS80905CNAA — 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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