What are the specs for this Limit Switch?

The correct replacement for Goodman model AMS81405DXAA — B1370198 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 AMS81405DXAA — B1370198.

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 150°F Primary Limit Switch for AMS81405DXAA — B1370198

Name: OEM Goodman 150°F Primary Limit Switch for AMS81405DXAA — B1370198
Brand: Goodman
SKU: GOODMAN-7287
Price: 24.95 USD
Availability: InStock

SKU: GOODMAN-7287 Brand: Goodman

$24.95 $32.95

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Goodman B1370198 150°F Primary Limit Switch

The B1370198 is a genuine OEM primary high-limit switch for the Goodman/Amana AMS81405DXAA gas furnace and compatible models. Mounted on the heat-exchanger bulkhead, this 150°F auto-reset limit is the furnace's main overheat protection — it interrupts the gas valve if supply-air temperature exceeds safe limits, preventing heat-exchanger damage from restricted airflow.

Specifications

Trip temperature: 150°F (open on rise)
Reset type: Automatic reset
Configuration: Normally closed (N.C.)
Function: Primary heat-exchanger high limit
Fits: Goodman & Amana furnaces incl. AMS81405DXAA

OEM vs. Generic

Our OEM B1370198 delivers the exact factory trip temperature, disc size, and mounting flange required for correct furnace operation and safety compliance. Generic limits with off-spec trip points can cause short-cycling or leave the heat exchanger unprotected. This is the safest, longest-lasting choice for your system.

Installation Difficulty

Easy (2/5) — Requires removing the two spade connectors and mounting screws; note orientation so the sensing disc seats flush against the airstream. Frequent tripping typically points to airflow restriction (dirty filter, blocked coil, undersized ductwork) rather than the switch itself. Always de-energize before working.

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 150°F Primary Limit ...

$24.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMS81405DXAA — B1370198?

Yes. This is the factory-specified OEM limit switch for the Goodman AMS81405DXAA — B1370198. 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 AMS81405DXAA — B1370198?

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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