What are the specs for this Limit Switch?

The correct replacement for Goodman model AMS80905CXAA — 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 AMS80905CXAA — 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 120F Auxiliary Limit Switch for AMS80905CXAA — B1370155

Name: OEM Goodman 120F Auxiliary Limit Switch for AMS80905CXAA — B1370155
Brand: Goodman
SKU: GOODMAN-7126
Price: 21.95 USD
Availability: InStock

SKU: GOODMAN-7126 Brand: Goodman

$21.95 $28.95

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The Goodman B1370155 Auxiliary Limit Switch is a genuine OEM overheat safety control built for the AMS80905CXAA gas furnace and related Goodman/Amana models. Mounted in the blower or return-air area, this 120°F auxiliary limit senses excessive heat caused by restricted airflow — a clogged filter, failed blower, or blocked ducting — and shuts the furnace down before damage occurs. Installing the factory-spec part preserves the precise 120°F set point and terminal layout your furnace control expects.

Specifications

Trip temperature: 120°F auxiliary open point
Function: Secondary overheat / airflow-failure protection
Reset type: Auto-reset on cool-down
Fits: Goodman/Amana AMS80905CXAA and related 80% furnaces
OEM Part Number: B1370155

OEM vs. Generic

The OEM option is the original Goodman part for exact fit and calibration. The Generic option is a quality aftermarket equivalent matched to the 120°F rating, offering meaningful savings for standard repairs.

Install Difficulty

Easy (1/5). Disconnect power, unplug the spade terminals, remove the mounting screws, and reverse to install the replacement. Most techs finish in 15 minutes or less.

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 120F Auxiliary Limit...

$21.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMS80905CXAA — B1370155?

Yes. This is the factory-specified OEM limit switch for the Goodman AMS80905CXAA — 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 AMS80905CXAA — 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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