What are the specs for this Limit Switch?

The correct replacement for Goodman model AMH80903BNAB — 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 AMH80903BNAB — 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 AMH80903BNAB — B1370198

Name: OEM Goodman 150F Primary Limit Switch for AMH80903BNAB — B1370198
Brand: Goodman
SKU: GOODMAN-5709
Price: 12.95 USD
Availability: InStock

SKU: GOODMAN-5709 Brand: Goodman

$12.95 $16.95

OEM Guaranteed

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The OEM Goodman B1370198 primary limit switch is a genuine 150°F high-limit overheat safety for AMH80903BNAB furnaces and other compatible Goodman and Amana models. Mounted on the heat exchanger deck, it opens the burner circuit if supply-air temperature climbs too high, preventing heat-exchanger damage from restricted airflow. A failed primary limit is a common cause of furnace short-cycling or a no-heat condition.

Specifications

Trip temperature: 150°F (high-limit, opens on rise)
Type: primary/high-limit safety switch
Auto-reset on temperature drop
Fits: Goodman/Amana AMH80903BNAB and compatible furnaces
OEM part number: B1370198

OEM vs. Generic

The OEM B1370198 is calibrated to the exact 150°F trip point and probe length your furnace requires. Because the primary limit is the main overheat safeguard for the heat exchanger, an incorrectly rated generic switch can allow damaging temperatures or cause frequent lockouts. Genuine OEM is strongly recommended.

Installation Difficulty

Easy to Moderate. Shut off power, disconnect the two terminals, and remove the mounting screws — note that the sensing element inserts through the heat-exchanger panel, so reinstall with the same depth and orientation. Confirm proper airflow and blower operation before restoring heat.

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 AMH80903BNAB — B1370198?

Yes. This is the factory-specified OEM limit switch for the Goodman AMH80903BNAB — 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 AMH80903BNAB — 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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