What are the specs for this Limit Switch?

The correct replacement for Goodman model AMH80704BXAA — 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 AMH80704BXAA — 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 AMH80704BXAA — B1370188

Name: OEM Goodman 170°F Primary Limit Switch for AMH80704BXAA — B1370188
Brand: Goodman
SKU: GOODMAN-5384
Price: 12.95 USD
Availability: InStock

SKU: GOODMAN-5384 Brand: Goodman

$12.95 $16.95

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The Goodman B1370188 Primary Limit Switch is a genuine OEM 170°F auto-reset high-limit designed for the AMH80704BXAA gas furnace and compatible Goodman/Amana models. Mounted on the heat-exchanger bulkhead, it is the main overheat protection: if supply-air temperature climbs past the set point due to low airflow, a dirty filter, or a stalled blower, it opens the control circuit to shut off the burners and prevent heat-exchanger cracking. A furnace that fires briefly then shuts down often points to a tripping or failed primary limit.

Specifications

Trip temperature: 170°F (opens on rise)
Reset: Automatic (closes on cool-down)
Function: Primary high-limit safety
OEM part number: B1370188
Fits: Goodman/Amana AMH80704BXAA and select furnace models

OEM vs. Generic

The OEM B1370188 is factory-set to the exact 170°F trip point and disc length Goodman specifies for this heat exchanger. A generic switch with a different set point or insertion depth can cause nuisance short-cycling or fail to protect the exchanger. For this safety-critical part, OEM is the right call.

Installation Difficulty

Easy — two mounting screws and spade terminals. Note the wiring, install in the same position, and reconnect. Achievable by an experienced homeowner. Always shut off power and gas, and resolve any airflow problem that caused the limit to trip.

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 ...

$12.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMH80704BXAA — B1370188?

Yes. This is the factory-specified OEM limit switch for the Goodman AMH80704BXAA — 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 AMH80704BXAA — 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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