What are the specs for this Limit Switch?

The correct replacement for Goodman model AMS80904BXA — B1370145 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 AMS80904BXA — B1370145.

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 300°F Rollout Limit Switch for AMS80904BXA — B1370145

Name: OEM Goodman 300°F Rollout Limit Switch for AMS80904BXA — B1370145
Brand: Goodman
SKU: GOODMAN-7078
Price: 4.95 USD
Availability: InStock

SKU: GOODMAN-7078 Brand: Goodman

$4.95 $6.49

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Texas CMBL #19328542014

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The Goodman B1370145 is a genuine 300°F flame rollout limit switch for AMS80904BXA furnaces and compatible Goodman/Amana models. Mounted on the burner box, this manual-reset safety switch opens the ignition circuit if flame rolls out of the heat exchanger — protecting the cabinet, wiring, and occupants from a dangerous combustion fault. A tripped or failed rollout switch will shut the furnace down and must be replaced with an exact-rated part.

Specifications

Type: Flame rollout limit switch (manual reset)
Trip temperature: 300°F
Action: Opens on temperature rise
Fits: AMS80904BXA and compatible Goodman/Amana furnaces
Terminals: Standard 1/4 inch quick-connect
OEM Part: B1370145

OEM vs. Generic

This is a safety-critical component — the genuine Goodman switch is calibrated to trip at the exact 300°F setpoint your furnace's design requires. A mis-rated generic switch may nuisance-trip or, worse, fail to open during a real rollout event. Never substitute a different temperature rating. OEM is strongly recommended.

Install Difficulty

Easy (2/5). Shut off power, note the wire positions, unscrew the switch from the burner box, and mount the replacement with the same orientation. If the switch tripped, always diagnose the root cause (blocked flue, cracked heat exchanger, failing inducer) before returning the furnace 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

OEM Goodman 300°F Rollout Limit ...

$4.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMS80904BXA — B1370145?

Yes. This is the factory-specified OEM limit switch for the Goodman AMS80904BXA — B1370145. 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 AMS80904BXA — B1370145?

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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