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Goodman

OEM Goodman 120F Auxiliary Limit Switch for AMS80904BNA — B1370155

SKU: GOODMAN-7059 Brand: Goodman
$11.96 $15.95

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Texas CMBL #19328542014
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Govt POs Accepted

The Goodman B1370155 120°F Auxiliary Limit Switch is a genuine OEM auto-reset high-limit safety for Goodman/Amana AMS80904BNA gas furnaces. Typically mounted near the blower deck, it monitors cabinet temperature and interrupts the circuit if heat builds beyond safe limits — protecting against restricted airflow from a dirty filter, closed registers, or a failing blower. When it trips, the furnace shuts down heat until temperatures fall back into range.

  • Part number: B1370155
  • Trip temperature: 120°F (opens on rise)
  • Reset type: Automatic reset
  • Function: Auxiliary / secondary high-limit safety
  • Fits: Goodman/Amana AMS80904BNA and compatible furnace models

OEM vs. Generic: This OEM switch is factory-calibrated to open at exactly 120°F. Generic limits with loose tolerances may nuisance-trip or fail to protect the equipment. For an auxiliary safety on a heating appliance, OEM calibration matters.

Install difficulty: Easy (2/5). Disconnect power, remove the two spade connectors, unfasten the switch, and install the replacement in the same orientation. Basic hand tools; about 15 minutes. Address any airflow restriction that caused repeat trips.

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 AMS80904BNA — B1370155?
Yes. This is the factory-specified OEM limit switch for the Goodman AMS80904BNA — 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 AMS80904BNA — 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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