What are the specs for this Limit Switch?

The correct replacement for Goodman model AMS80704BXAA — 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 AMS80704BXAA — 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 Rollout Limit Switch 300°F for AMS80704BXAA — B1370145

Name: OEM Goodman Rollout Limit Switch 300°F for AMS80704BXAA — B1370145
Brand: Goodman
SKU: GOODMAN-6944
Price: 4.95 USD
Availability: InStock

SKU: GOODMAN-6944 Brand: Goodman

$4.95 $6.95

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Goodman B1370145 Rollout Limit Switch (300°F)

The Goodman B1370145 is a genuine OEM flame-rollout limit switch rated to trip at 300°F, engineered as an exact-fit replacement for the Goodman/Amana AMS80704BXAA furnace. This manual-reset safety switch mounts on the burner box and instantly cuts power to the gas valve if flames roll out of the combustion chamber — protecting the furnace and home from overheating. A tripped or failed rollout switch is a common no-heat cause and, because it is a safety device, should be replaced with an exact-rated part.

Trip Temperature: 300°F
Type: Manual-reset flame rollout / limit safety switch
Fit: Direct OEM replacement for AMS80704BXAA
Function: Shuts off gas on flame rollout / overheat
Part Number: B1370145

OEM vs. Generic

Because this is a life-safety limit switch, a genuine Goodman OEM part with the exact 300°F trip rating is strongly recommended. A generic switch with a different set point can trip prematurely or, worse, fail to protect against rollout. Do not substitute a differently rated switch.

Installation Difficulty

Easy. Typically two mounting screws and two spade wire terminals. A confident DIYer can replace it, but if it keeps tripping, have a technician diagnose the underlying rollout cause. Turn off gas and power first.

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 Rollout Limit Switch...

$4.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMS80704BXAA — B1370145?

Yes. This is the factory-specified OEM limit switch for the Goodman AMS80704BXAA — 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 AMS80704BXAA — 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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