What are the specs for this Limit Switch?

The correct replacement for Goodman model AMH80904BNAA — 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 AMH80904BNAA — 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 AMH80904BNAA — B1370155

Name: OEM Goodman 120F Auxiliary Limit Switch for AMH80904BNAA — B1370155
Brand: Goodman
SKU: GOODMAN-5774
Price: 11.96 USD
Availability: InStock

SKU: GOODMAN-5774 Brand: Goodman

$11.96 $15.95

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The Goodman B1370155 Auxiliary Limit Switch is a genuine OEM 120°F overheat safety control for the AMH80904BNAA furnace and compatible Goodman and Amana models. Typically mounted on the blower deck or heat-exchanger area, this auxiliary limit opens the control circuit if temperatures rise too high — usually from restricted airflow, a dirty filter, or a failed blower — shutting down heating to prevent damage to the furnace and duct system. It works alongside the primary high-limit for layered overheat protection.

Specifications

Part Number: B1370155
Trip Temperature: 120°F (auxiliary limit)
Type: Auxiliary high-limit safety switch
Fits Model: AMH80904BNAA
Brand: Goodman / Amana (OEM)
Function: Normally closed; opens on over-temperature

OEM vs. Generic

The genuine B1370155 is factory-set to the correct 120°F trip point with the proper mounting and terminals for your furnace. Because it is a safety limit, a generic switch with the wrong setpoint can cause nuisance shutdowns or, worse, fail to protect against overheating. OEM ensures reliable, code-correct operation.

Installation

Difficulty: Easy (2 of 5). Cut power, disconnect the terminals, remove the mounting screws, and install the new switch in the identical location and orientation. If it had tripped, inspect the filter and blower for airflow restrictions before restoring heat.

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...

$11.96

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMH80904BNAA — B1370155?

Yes. This is the factory-specified OEM limit switch for the Goodman AMH80904BNAA — 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 AMH80904BNAA — 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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