What are the specs for this Limit Switch?

The correct replacement for Goodman model DMS81405DNA — 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 DMS81405DNA — 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 DMS81405DNA — B1370198

Name: OEM Goodman 150°F Primary Limit Switch for DMS81405DNA — B1370198
Brand: Goodman
SKU: GOODMAN-9635
Price: 12.95 USD
Availability: InStock

SKU: GOODMAN-9635 Brand: Goodman

$12.95 $16.95

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Goodman B1370198 Primary Limit Switch (150°F)

The Goodman B1370198 is a factory-original primary high-limit switch engineered for the DMS81405DNA gas furnace and other compatible Goodman/Amana models. This safety control continuously monitors heat-exchanger and plenum temperature, opening the burner circuit if the furnace overheats due to restricted airflow, a dirty filter, or blower failure — protecting the heat exchanger and preventing hazardous operation.

Specifications

Part number: B1370198
Type: Snap-disc primary high-limit switch
Cutout temperature: 150°F (automatic reset)
Fits: Goodman DMS81405DNA furnace
Mounting: Screw-mount to heat-exchanger bulkhead
Brand: Goodman OEM

OEM vs. Generic

This is a genuine Goodman OEM switch calibrated to the exact 150°F trip point specified for your furnace. Generic snap-discs may carry a similar rating but often use looser tolerances, which can cause nuisance trips or fail to protect at the correct threshold. Choosing OEM keeps your furnace within manufacturer safety specs and protects your warranty.

Installation Difficulty

Easy (1/5). Turn off power and gas, disconnect the two spade terminals, remove two mounting screws, and swap in the new switch. Most homeowners complete this in under 15 minutes. If your limit is tripping repeatedly, also inspect the filter, blower, and ductwork for airflow restrictions before returning the unit 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 Limit Switch fit my Goodman DMS81405DNA — B1370198?

Yes. This is the factory-specified OEM limit switch for the Goodman DMS81405DNA — 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 DMS81405DNA — 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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