What are the specs for this Limit Switch?

The correct replacement for Goodman model AMS80905CNA — 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 AMS80905CNA — 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 AMS80905CNA — B1370189

Name: OEM Goodman 200°F Primary Limit Switch for AMS80905CNA — B1370189
Brand: Goodman
SKU: GOODMAN-7099
Price: 18.95 USD
Availability: InStock

SKU: GOODMAN-7099 Brand: Goodman

$18.95 $24.95

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Texas CMBL #19328542014

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The Goodman B1370189 is a genuine OEM 200°F primary limit switch for the Goodman/Amana AMS80905CNA gas furnace. Positioned over the heat exchanger, the primary high-limit is the furnace's main overheat guard: if supply-air temperature rises above the set point, it opens and de-energizes the gas valve while keeping the blower running to purge heat. A failed limit switch causes no-heat, short-cycling, or repeated lockouts.

Type: Primary high-limit switch
Trip temperature: 200°F
OEM part number: B1370189
Fits model: AMS80905CNA
Function: Primary overheat protection over heat exchanger
Reset: Automatic (snap-disc)

OEM vs. Generic

The primary limit's set point and mounting depth are matched to the AMS80905CNA heat exchanger. The OEM B1370189 opens at 200°F exactly as certified. A generic snap-disc with the wrong temperature or probe length can nuisance-trip or allow unsafe operation. For the furnace's main safety limit, OEM is the recommended choice.

Installation Difficulty: Easy

Rated Easy. Turn off power and gas, note the spade wire positions, remove the two mounting screws, and fit the replacement in the same opening so the sensing element sits in the correct air path. Restore power and verify a full heat cycle without a limit trip. If the old switch tripped, check for airflow restrictions or blower issues 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 200°F Primary Limit ...

$18.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMS80905CNA — B1370189?

Yes. This is the factory-specified OEM limit switch for the Goodman AMS80905CNA — 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 AMS80905CNA — 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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