What are the specs for this Limit Switch?

The correct replacement for Goodman model AMH81405DNAB — 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 AMH81405DNAB — 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 150F Primary Limit Switch for AMH81405DNAB — B1370198

Name: OEM Goodman 150F Primary Limit Switch for AMH81405DNAB — B1370198
Brand: Goodman
SKU: GOODMAN-B1370198
Price: 12.95 USD
Availability: InStock

SKU: GOODMAN-B1370198 Brand: Goodman

$12.95 $16.95

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The Goodman B1370198 Primary High-Limit Switch is the genuine OEM main temperature-limit control for the AMH81405DNAB gas furnace. Installed on the heat-exchanger bulkhead, it monitors supply-air temperature and shuts off the gas valve if the furnace overheats — the primary line of defense against heat-exchanger damage from restricted airflow.

Specifications

Trip temperature: 150°F (opens on rise)
Type: Primary high-limit switch
Reset: Auto-reset on temperature fall
Function: Heat-exchanger / supply-air overheat protection
OEM Part Number: B1370198
Fits: Goodman/Amana AMH81405DNAB furnace

OEM vs. Generic

The OEM Goodman B1370198 is calibrated to the exact 150°F opening temperature engineered for your furnace's heat rise. A mismatched generic limit can cause short-cycling or fail to protect the heat exchanger. For this safety-critical part, OEM is the right choice.

Installation Difficulty

Easy (2/5). Shut off power and gas, remove the burner-compartment door, disconnect the two terminals, unscrew the limit from the bulkhead, and fit the replacement in the same orientation. Roughly 15–20 minutes. Check and replace a dirty filter to prevent repeat trips.

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 150F Primary Limit S...

$12.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMH81405DNAB — B1370198?

Yes. This is the factory-specified OEM limit switch for the Goodman AMH81405DNAB — 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 AMH81405DNAB — 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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