What are the specs for this Limit Switch?

The correct replacement for Goodman model AMS80903BNAA — B1370198 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 AMS80903BNAA — B1370198.

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 150°F Primary Limit Switch for AMS80903BNAA — B1370198

Name: OEM Goodman 150°F Primary Limit Switch for AMS80903BNAA — B1370198
Brand: Goodman
SKU: GOODMAN-B1370198
Price: 24.95 USD
Availability: InStock

SKU: GOODMAN-B1370198 Brand: Goodman

$24.95 $32.95

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The Goodman B1370198 Primary Limit Switch is a genuine OEM safety control designed for the AMS80903BNAA gas furnace and compatible Goodman/Amana models. This limit switch continuously monitors heat-exchanger temperature and opens the gas valve/blower circuit if the furnace exceeds its 150°F trip point, protecting your system from dangerous overheating caused by restricted airflow, a dirty filter, or blower failure.

Specifications

Part Number: B1370198
Type: Primary (fan/limit) safety switch
Trip Temperature: 150°F (auto-reset)
Equipment: Gas Furnace
Fits: Goodman/Amana AMS80903BNAA and related 80% models
Mounting: Snap-disc, factory bracket

OEM vs. Generic

Our OEM version is a genuine Goodman part with an exact factory-calibrated trip point and mounting footprint — the safest choice for a temperature-sensitive safety control. The Generic version is a quality-tested equivalent that meets the same 150°F rating at a lower price point, ideal for budget repairs where an exact-match snap disc is acceptable.

Installation Difficulty

Easy (1 of 5). A basic repair: shut off power and gas, unplug the two spade terminals, remove the two mounting screws, and swap in the new switch. Most homeowners complete this in under 15 minutes. Always confirm the underlying airflow issue is resolved before replacing a tripped limit.

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 150°F Primary Limit ...

$24.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMS80903BNAA — B1370198?

Yes. This is the factory-specified OEM limit switch for the Goodman AMS80903BNAA — B1370198. 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 AMS80903BNAA — B1370198?

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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