What are the specs for this Limit Switch?

The correct replacement for Goodman model AMS80704BXA — 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 AMS80704BXA — 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 AMS80704BXA — B1370188

Name: OEM Goodman 170°F Primary Limit Switch for AMS80704BXA — B1370188
Brand: Goodman
SKU: GOODMAN-6933
Price: 27.95 USD
Availability: InStock

SKU: GOODMAN-6933 Brand: Goodman

$27.95 $35.95

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The Goodman B1370188 is a genuine OEM primary high-limit switch rated at 170°F, designed for the AMS80704BXA gas furnace and compatible Goodman and Amana models. Positioned in the heat exchanger air stream, this auto-reset switch is the furnace's main overheat safety: it shuts off the gas burners if supply-air temperature climbs too high, protecting the heat exchanger from cracking and preventing dangerous overheating during low-airflow conditions.

Trip temperature: 170°F
Reset type: Automatic (self-resetting)
Function: Primary high-limit / heat exchanger overheat protection
Fits: AMS80704BXA and compatible Goodman/Amana furnaces
Part number: B1370188

OEM vs. Generic: The genuine B1370188 is factory-calibrated to the exact 170°F setpoint and insertion depth this furnace requires. A generic switch with the wrong trip temperature or probe length can allow the heat exchanger to overheat or cause repeated nuisance shutdowns. Because this is the primary safety limit, we recommend the OEM part.

Install difficulty: Moderate. The switch typically mounts to the heat exchanger panel with two screws and connects with spade terminals. Confirm proper airflow (clean filter, open registers, correct blower speed) before and after replacement, since low airflow is the most common cause of high-limit trips. Disconnect power before servicing; when in doubt, use 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 170°F Primary Limit ...

$27.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMS80704BXA — B1370188?

Yes. This is the factory-specified OEM limit switch for the Goodman AMS80704BXA — 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 AMS80704BXA — 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 AMS80704BXA — B1370188

Shipping Information

Return Policy

Frequently Asked Questions