What are the specs for this Limit Switch?

The correct replacement for Goodman model AMS80704BNA — B1370188 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 AMS80704BNA — B1370188.

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 170°F Primary Limit Switch for AMS80704BNA — B1370188

Name: OEM Goodman 170°F Primary Limit Switch for AMS80704BNA — B1370188
Brand: Goodman
SKU: GOODMAN-6913
Price: 26.95 USD
Availability: InStock

SKU: GOODMAN-6913 Brand: Goodman

$26.95 $34.95

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Genuine OEM Goodman B1370188 is a 170°F primary high-limit switch built for the AMS80704BNA gas furnace and compatible Goodman/Amana models. Mounted on the heat-exchanger or burner bulkhead, the primary limit is the furnace's main overheat safety: it interrupts the gas valve if supply-air temperature climbs too high due to a dirty filter, blocked ducts, or blower failure, preventing heat-exchanger damage.

When a primary limit fails open or trips repeatedly, the furnace will lock out or short-cycle. Replacing it with the correct OEM switch restores reliable high-temperature protection and normal heating.

Part number: B1370188
Trip temperature: 170°F (auto-reset)
Reset type: Automatic
Function: Primary high-limit / heat-exchanger overheat cutout
Fits: Goodman AMS80704BNA and compatible furnaces

OEM vs. Generic: The genuine Goodman limit is set to the exact 170°F trip point and matches the original probe length, bracket, and terminals. A generic switch with the wrong temperature or geometry can nuisance-trip or fail to protect the heat exchanger — risking cracks and unsafe operation. For the furnace's primary safety limit, always choose OEM.

Install difficulty: Moderate — accessible to an experienced DIYer or technician. Cut power to the furnace, record the wire positions, remove the two mounting screws, move the terminals to the new switch, and reinstall. Confirm proper airflow and verify the switch is closed at room temperature after installing.

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 170°F Primary Limit ...

$26.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMS80704BNA — B1370188?

Yes. This is the factory-specified OEM limit switch for the Goodman AMS80704BNA — B1370188. 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 AMS80704BNA — B1370188?

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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OEM Goodman 170°F Primary Limit Switch for AMS80704BNA — B1370188

Shipping Information

Return Policy

Frequently Asked Questions