What are the specs for this Limit Switch?

The correct replacement for Goodman model AMS80905CNAA — B1370189 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 AMS80905CNAA — B1370189.

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 200°F Primary Limit Switch for AMS80905CNAA — B1370189

Name: OEM Goodman 200°F Primary Limit Switch for AMS80905CNAA — B1370189
Brand: Goodman
SKU: GOODMAN-7110
Price: 18.95 USD
Availability: InStock

SKU: GOODMAN-7110 Brand: Goodman

$18.95 $24.95

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The Goodman B1370189 Primary Limit Switch is a genuine OEM safety control designed for the Amana/Goodman AMS80905CNAA 80% AFUE gas furnace and compatible models. This normally-closed thermal switch monitors heat-exchanger and plenum temperatures and interrupts the gas valve/ignition circuit when the furnace exceeds its safe operating limit, protecting your equipment from overheating caused by restricted airflow, a dirty filter, or a failing blower.

Specifications

Trip temperature: 200°F (auto-reset)
Type: Primary high-limit safety switch
Configuration: Normally closed (opens on temperature rise)
Fits: Goodman/Amana AMS80905CNAA and compatible 80% furnaces
OEM part number: B1370189

OEM vs. Generic

Our OEM Goodman limit switch is built to the exact trip point and mounting spec of your furnace, ensuring the safety circuit opens at the correct temperature. Generic aftermarket switches may use approximate trip ratings or looser tolerances, which can cause nuisance shutdowns or, worse, fail to trip when needed. For a safety-critical control we strongly recommend the genuine OEM part.

Symptoms of a Failed Limit Switch

Furnace short-cycles or shuts down on high limit
Blower runs continuously
No heat / ignition locks out

Installation Difficulty: Easy

Rated Easy (2/5). Replacement typically takes 15–20 minutes with basic hand tools. Always disconnect power at the breaker before servicing. Remove the two mounting screws, transfer the wire leads to the new switch, and reinstall. If you are not comfortable working near the gas valve or heat exchanger, consult a licensed HVAC technician.

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 200°F Primary Limit ...

$18.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMS80905CNAA — B1370189?

Yes. This is the factory-specified OEM limit switch for the Goodman AMS80905CNAA — B1370189. 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 AMS80905CNAA — B1370189?

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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