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Goodman

OEM Goodman 120°F Auxiliary Limit Switch for AMS80704BNA — B1370155

SKU: GOODMAN-6912 Brand: Goodman
$24.95 $32.95

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

Genuine OEM Goodman B1370155 is a 120°F auxiliary limit switch designed for the AMS80704BNA gas furnace and related Goodman/Amana equipment. Typically mounted on or near the blower housing, this auto-reset switch monitors temperature in the air-handling section and shuts off the burners if airflow is restricted or the blower fails, protecting the furnace from overheating.

A failed auxiliary limit can cause the furnace to short-cycle, fail to heat, or run without proper high-temperature protection. Installing the correct OEM switch restores dependable overheat safety.

  • Part number: B1370155
  • Trip temperature: 120°F (auto-reset)
  • Reset type: Automatic
  • Function: Auxiliary / blower-compartment overheat limit
  • Fits: Goodman AMS80704BNA and compatible furnaces

OEM vs. Generic: The genuine Goodman switch is factory-calibrated to the precise 120°F auto-reset point and matches the original mounting bracket and terminal layout. Generic substitutes often carry the wrong trip temperature or differential, causing premature tripping or inadequate protection. For a temperature-critical safety control, OEM ensures the furnace behaves exactly as engineered.

Install difficulty: Moderate — a manageable job for a DIYer with basic tools. Shut off power to the furnace, photograph the wiring, remove the mounting screws, transfer the wire connectors to the new switch, and reassemble. Test furnace heating and blower operation 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

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMS80704BNA — B1370155?
Yes. This is the factory-specified OEM limit switch for the Goodman AMS80704BNA — 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 AMS80704BNA — 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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Mike Rivera
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