What are the specs for this Primary Limit Switch?

The correct replacement for Goodman model AMH81405DNAC — 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 AMH81405DNAC — B1370198.

What symptoms indicate I need a new primary limit switch?

Common symptoms that indicate you need a new primary limit switch include unusual noises, intermittent operation, complete failure to operate, or visible damage. For specific diagnostic guidance, visit nationalhvacparts.com/pages/hvac-diagnostic.

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Goodman

OEM Goodman 150°F Primary Limit Switch for AMH81405DNAC — B1370198

Name: OEM Goodman 150°F Primary Limit Switch for AMH81405DNAC — B1370198
Brand: Goodman
SKU: GOODMAN-6154
Price: 12.95 USD
Availability: InStock

SKU: GOODMAN-6154 Brand: Goodman

$12.95 $16.95

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OEM Goodman B1370198 Primary Limit Switch (150°F)

The Goodman B1370198 is a genuine OEM primary high-limit switch rated at 150°F for AMH81405DNAC gas furnaces. Installed on the heat-exchanger/supply-air side, this auto-reset limit monitors plenum temperature and shuts off the burners if the furnace overheats due to insufficient airflow, protecting the heat exchanger from cracking. It is a factory-spec replacement that fits Goodman and Amana furnaces built on the same chassis.

Category: Limit Switch
OEM Part Number: B1370198
Trip Temperature: 150°F
Type: Primary high limit
Fits: AMH81405DNAC and compatible Goodman/Amana furnaces

OEM vs. Generic

The genuine OEM B1370198 delivers the exact 150°F trip point and mounting geometry the furnace's safety design depends on. Generic limits with different set points or footprints can nuisance-trip or, worse, allow the heat exchanger to overheat. For a primary safety limit, OEM is strongly recommended.

Installation Difficulty

Easy to Moderate — disconnect power, remove the mounting screws and spade terminals, and fit the replacement in the same location and orientation. Diagnose and correct any airflow restriction before returning the furnace to service.

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 Primary Limit Switch fit my Goodman AMH81405DNAC — B1370198?

Yes. This is the factory-specified OEM primary limit switch for the Goodman AMH81405DNAC — 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 primary limit switch on my Goodman AMH81405DNAC — 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 primary limit switch?

Common symptoms: unusual noises, intermittent operation, complete failure, or visible damage. Visit our diagnostic hub for symptom-based troubleshooting.

Is this primary 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 primary 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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