What are the specs for this Limit Switch?

The correct replacement for Goodman model DMS80704BNA — 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 DMS80704BNA — 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 DMS80704BNA — B1370155

Name: OEM Goodman 120°F Auxiliary Limit Switch for DMS80704BNA — B1370155
Brand: Goodman
SKU: GOODMAN-9589
Price: 11.96 USD
Availability: InStock

SKU: GOODMAN-9589 Brand: Goodman

$11.96 $15.95

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Goodman B1370155 Auxiliary Limit Switch (120°F)

The Goodman B1370155 is a genuine OEM auxiliary limit switch rated at 120°F, designed for the Goodman DMS80704BNA furnace and compatible models. Typically mounted in or near the blower compartment, this auxiliary high-limit switch guards against overheating caused by blower failure or severely restricted airflow. If temperatures climb past the safe threshold, the switch interrupts the control circuit and shuts the burners down, preventing heat-exchanger damage and unsafe operating conditions.

Specifications

Part number: B1370155
Type: Auxiliary high-limit switch
Trip temperature: 120°F rating
Location: Blower / air-circulation compartment
Fits: Goodman DMS80704BNA and related furnaces
Function: Secondary overheat / airflow-loss safety protection

OEM vs. Generic

The OEM B1370155 is factory-calibrated to Goodman's specified 120°F auxiliary trip point and matched to the DMS80704BNA mounting location. Because it is a safety device, using a generic switch with a different rating risks nuisance shutdowns or, worse, failing to trip when needed. For overheat protection, always install the correctly rated OEM switch.

Installation Difficulty

Rating: Easy (2/5). Turn off power at the furnace, disconnect the wire terminals, remove the mounting screws, and fit the replacement in the same orientation. Roughly 15–20 minutes. If this limit had been tripping, confirm the blower runs correctly and check for dirty filters or blocked ducts before restoring normal operation.

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...

$11.96

Frequently Asked Questions

Does this Limit Switch fit my Goodman DMS80704BNA — B1370155?

Yes. This is the factory-specified OEM limit switch for the Goodman DMS80704BNA — 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 DMS80704BNA — 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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