What are the specs for this Limit Switch?

The correct replacement for Goodman model AMS80903BNA — 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 AMS80903BNA — 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 AMS80903BNA — B1370198

Name: OEM Goodman 150°F Primary Limit Switch for AMS80903BNA — B1370198
Brand: Goodman
SKU: GOODMAN-7032
Price: 12.95 USD
Availability: InStock

SKU: GOODMAN-7032 Brand: Goodman

$12.95 $16.99

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Goodman B1370198 Primary High-Limit Switch (150°F)

The B1370198 is the genuine OEM primary high-limit switch for the Goodman/Amana AMS80903BNA gas furnace and compatible 80% AFUE models. Installed on the heat-exchanger supply-air side, this is the main overheat safety control: it continuously monitors plenum temperature and de-energizes the gas valve if the furnace exceeds its safe operating limit, then automatically restores the circuit once the cabinet cools. It is the single most important temperature safety in the heating cycle.

Specifications

Trip temperature: 150°F (open-on-rise)
Reset type: Auto-reset (closes on cool-down)
Circuit: Normally closed primary high limit
Mount: Supply-air / heat-exchanger deck
Fits: Goodman & Amana AMS80903BNA and compatible 80% furnaces
Brand: Genuine Goodman OEM

OEM vs. Generic

Our OEM B1370198 guarantees the exact 150°F set point and bracket dimensions this furnace was certified with. Because the primary limit is a life-safety device, we strongly discourage generic substitutes — a mismatched trip point can allow the heat exchanger to overheat or cause repeated nuisance shutdowns. OEM ensures listed, drop-in protection.

Installation Difficulty

Easy (1/5). Shut off power, disconnect the spade terminals, remove the two mounting screws, and install the replacement in the same orientation. Roughly 10–15 minutes. If the old limit tripped, verify blower operation and airflow before restarting.

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 ...

$12.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMS80903BNA — B1370198?

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