What are the specs for this Limit Switch?

The correct replacement for Goodman model AMS80903BNA — 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 AMS80903BNA — 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 AMS80903BNA — B1370155

Name: OEM Goodman 120°F Auxiliary Limit Switch for AMS80903BNA — B1370155
Brand: Goodman
SKU: GOODMAN-7031
Price: 11.96 USD
Availability: InStock

SKU: GOODMAN-7031 Brand: Goodman

$11.96 $15.49

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Goodman B1370155 Auxiliary Limit Switch (120°F)

The B1370155 is a genuine OEM auxiliary high-limit switch for the Goodman/Amana AMS80903BNA furnace and related 80% AFUE models. Typically located on the blower deck or heat-exchanger housing, this low-temperature auxiliary limit adds a secondary layer of overheat protection: if airflow is restricted or the blower fails, the switch opens the control circuit and shuts down the burners before temperatures reach a damaging level. A furnace that short-cycles on limit or fails to heat is a common sign of a tripped or worn auxiliary limit.

Specifications

Trip temperature: 120°F (open-on-rise)
Reset type: Auto-reset (closes on cool-down)
Circuit: Normally closed auxiliary limit
Mount: Blower housing / heat-exchanger deck
Fits: Goodman & Amana AMS80903BNA and compatible 80% furnaces
Brand: Genuine Goodman OEM

OEM vs. Generic

The OEM B1370155 is matched to the precise 120°F set point and mounting footprint required for this cabinet. Generic replacements with approximate ratings can trip early, leaving customers cold, or trip late, defeating the safety function. Choose OEM for correct auto-reset behavior and drop-in fit.

Installation Difficulty

Easy (1/5). De-energize the furnace, pull the two spade connectors, remove the mounting screws, and swap in the new switch. About 10–15 minutes. Inspect for airflow restrictions (dirty filter, closed registers) that may have caused the trip.

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 AMS80903BNA — B1370155?

Yes. This is the factory-specified OEM limit switch for the Goodman AMS80903BNA — 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 AMS80903BNA — 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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