What are the specs for this Limit Switch?

The correct replacement for Goodman model AMH80904BNAB — 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 AMH80904BNAB — 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 AMH80904BNAB — B1370155

Name: OEM Goodman 120°F Auxiliary Limit Switch for AMH80904BNAB — B1370155
Brand: Goodman
SKU: GOODMAN-5786
Price: 22.95 USD
Availability: InStock

SKU: GOODMAN-5786 Brand: Goodman

$22.95 $29.95

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The Goodman B1370155 Auxiliary Limit Switch is a genuine OEM temperature safety control for the AMH80904BNAB gas furnace and compatible Goodman/Amana 80% AFUE units. Typically mounted near the blower compartment, this auxiliary limit guards against heat buildup caused by restricted airflow, a failed blower, or a clogged filter — cutting the burner circuit before temperatures reach a damaging level.

Specifications

Trip temperature: 120°F
Reset type: Automatic reset
Function: Auxiliary / secondary high-limit protection
OEM Part Number: B1370155
Fits: AMH80904BNAB and related Goodman/Amana furnaces
Brand: Goodman (Daikin family)

OEM vs. Generic

Choosing the genuine OEM B1370155 guarantees the exact 120°F trip point and bracket geometry the furnace was designed around. Aftermarket substitutes may nominally match the temperature but differ in reset behavior and mounting, which can cause nuisance lockouts or leave your furnace under-protected. For safety limits, OEM is the confident choice.

Install Difficulty

Easy (1/5). Kill power at the furnace switch, pull the spade connectors, remove the two mounting screws, and install the replacement in the same orientation. Expect roughly 10–15 minutes. If the limit was tripping, correct the underlying airflow issue first.

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...

$22.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMH80904BNAB — B1370155?

Yes. This is the factory-specified OEM limit switch for the Goodman AMH80904BNAB — 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 AMH80904BNAB — 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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