What are the specs for this Limit Switch?

The correct replacement for Goodman model DMS81155CNA — 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 DMS81155CNA — 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 DMS81155CNA — B1370198

Name: OEM Goodman 150°F Primary Limit Switch for DMS81155CNA — B1370198
Brand: Goodman
SKU: GOODMAN-9624
Price: 26.95 USD
Availability: InStock

SKU: GOODMAN-9624 Brand: Goodman

$26.95 $35.95

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Goodman B1370198 150°F Primary Limit Switch

The genuine Goodman B1370198 is a 150°F primary high-limit switch for the DMS81155CNA and compatible Goodman/Amana furnaces. Mounted on the heat-exchanger/supply-plenum wall, this auto-reset switch is the furnace's main overheat safeguard. If supply-air temperature climbs past the rated limit — from a failing blower, dirty filter, or blocked ductwork — it opens the 24V circuit to shut off the burners and protect the heat exchanger from thermal damage.

Specifications

OEM Part Number: B1370198
Trip Temperature: 150°F
Reset Type: Automatic
Circuit: 24V normally-closed
Function: Primary high-limit overheat protection
Fits: Goodman DMS81155CNA and compatible furnaces

OEM vs. Generic

As the primary safety limit, this switch must trip at exactly its rated temperature. The genuine Goodman part guarantees factory calibration; generic replacements risk off-spec trip points that either short-cycle the furnace or fail to protect the heat exchanger. OEM is strongly recommended.

Install Difficulty

Easy to Moderate — Turn off power, transfer the wiring, and mount the new switch flush to the plenum in the original position. Always correct the underlying airflow problem before resetting, since repeated limit trips point to a restriction or blower fault.

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 ...

$26.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman DMS81155CNA — B1370198?

Yes. This is the factory-specified OEM limit switch for the Goodman DMS81155CNA — 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 DMS81155CNA — 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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