What are the specs for this Limit Switch?

The correct replacement for Goodman model AMS81405DXA — 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 AMS81405DXA — 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 AMS81405DXA — B1370145

Name: OEM Goodman 300°F Rollout Limit Switch for AMS81405DXA — B1370145
Brand: Goodman
SKU: GOODMAN-7278
Price: 12.95 USD
Availability: InStock

SKU: GOODMAN-7278 Brand: Goodman

$12.95 $16.95

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Goodman B1370145 300°F Flame Rollout Switch

The B1370145 is a genuine Goodman flame rollout limit switch with a 300°F trip point that shuts off the gas valve if flame rolls out of the burner box. It is a direct-fit replacement for the AMS81405DXA gas furnace and is used across many Goodman and Amana furnaces. This is a critical safety device — a tripped or failed rollout switch signals a blocked heat exchanger, cracked exchanger, or restricted flue that must be diagnosed before returning the furnace to service.

Specifications

Type: Manual-reset flame rollout limit switch
Trip Temperature: 300°F (opens on rise)
Reset: Manual push-button
OEM Part Number: B1370145
Primary Fit: Goodman AMS81405DXA furnace
Brand: Goodman / Amana OEM

OEM vs. Generic

OEM rollout switches are calibrated to the exact 300°F setpoint and terminal spacing the furnace's safety circuit expects. Generic switches with loose tolerances can trip early (nuisance lockouts) or trip late (a real safety hazard). For any flame-safety component, OEM is strongly recommended.

Installation Difficulty

Easy (1 of 5). Turn off gas and power, unplug the two spade terminals, remove the mounting screws, and install the new switch in the same orientation. Important: if the old switch was tripped, find and correct the root cause (dirty burners, blocked flue, cracked heat exchanger) before restarting.

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 ...

$12.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMS81405DXA — B1370145?

Yes. This is the factory-specified OEM limit switch for the Goodman AMS81405DXA — 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 AMS81405DXA — 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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