What are the specs for this Limit Switch?

The correct replacement for Goodman model AMH81405DXAA — 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 AMH81405DXAA — 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 AMH81405DXAA — B1370198

Name: OEM Goodman 150°F Primary Limit Switch for AMH81405DXAA — B1370198
Brand: Goodman
SKU: GOODMAN-6166
Price: 12.95 USD
Availability: InStock

SKU: GOODMAN-6166 Brand: Goodman

$12.95 $16.95

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The Goodman B1370198 Primary Limit Switch is a genuine OEM high-limit safety control for AMH81405DXAA gas furnaces and compatible Goodman/Amana equipment. Mounted on the heat-exchanger blower deck, this switch monitors supply-air temperature and opens at roughly 150°F to de-energize the gas valve when the furnace overheats due to a dirty filter, closed dampers, or blower failure.

Specifications

Trip temperature: 150°F (auto-reset)
Function: Primary high-limit safety cutout
Contact type: Normally closed (opens on temperature rise)
Fits: Goodman & Amana AMH81405DXAA and related 80% furnaces
OEM Part #: B1370198

OEM vs. Generic

Genuine B1370198 switches ship with the correct 150°F calibration and factory mounting flange that seats precisely against the blower housing for accurate temperature sensing. Generic replacements often sense temperature inaccurately or use the wrong bracket, causing premature lockouts or delayed safety response. Because this component directly controls the gas valve, we recommend the authentic OEM part.

Installation Difficulty

Easy (1/5). Kill power at the furnace disconnect, disconnect the two spade terminals, remove the mounting screws, and install the new B1370198 in the same orientation. Reconnect the leads and restore power. Typical replacement takes 10–15 minutes with a nut driver. Confirm the switch resets and the furnace completes a full heat cycle after service.

Get your furnace heating safely again with the genuine Goodman B1370198.

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 ...

$12.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMH81405DXAA — B1370198?

Yes. This is the factory-specified OEM limit switch for the Goodman AMH81405DXAA — 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 AMH81405DXAA — 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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