What are the specs for this Limit Switch?

The correct replacement for Goodman model DMS80905CNA — B1370155 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 DMS80905CNA — B1370155.

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 120°F Auxiliary Limit Switch for DMS80905CNA — B1370155

Name: OEM Goodman 120°F Auxiliary Limit Switch for DMS80905CNA — B1370155
Brand: Goodman
SKU: GOODMAN-9612
Price: 24.95 USD
Availability: InStock

SKU: GOODMAN-9612 Brand: Goodman

$24.95 $32.95

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Goodman B1370155 Auxiliary Limit Switch (120°F)

This genuine OEM Goodman B1370155 auxiliary limit switch is a 120°F automatic-reset safety control for the Goodman DMS80905CNA gas furnace and many compatible Goodman/Amana models. Typically mounted in the blower compartment, it senses excessive temperature caused by restricted return airflow, a dirty filter, or blower failure and interrupts the heating circuit until conditions return to normal — preventing damage to the blower housing and surrounding components.

Specifications

Trip temperature: 120°F
Type: automatic-reset auxiliary limit switch
Function: blower-compartment overheat protection
Fits: Goodman DMS80905CNA and compatible furnaces
OEM Part Number: B1370155

OEM vs. Generic

The OEM B1370155 uses the precise 120°F setpoint and bracket geometry Goodman designed for this cabinet. Generic substitutes with different trip temperatures or mounting profiles can cause short-cycling or fail to protect the blower. For a safety-critical control, the genuine OEM switch is the reliable choice.

Installation Difficulty

Moderate — about 15 minutes. Turn off power at the furnace, remove the blower-access panel, disconnect the wiring terminals, remove the mounting screws, and fit the new switch in the identical position. If the auxiliary limit keeps tripping, check the air filter and blower operation, and have a licensed HVAC technician verify airflow before restoring 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 120°F Auxiliary Limi...

$24.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman DMS80905CNA — B1370155?

Yes. This is the factory-specified OEM limit switch for the Goodman DMS80905CNA — B1370155. 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 DMS80905CNA — B1370155?

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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