What are the specs for this Limit Switch?

The correct replacement for Goodman model AMS81405DNA — B1370198 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 AMS81405DNA — B1370198.

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.

IMAGE COMING SOON

Goodman

OEM Goodman 150°F Primary Limit Switch for AMS81405DNA — B1370198

Name: OEM Goodman 150°F Primary Limit Switch for AMS81405DNA — B1370198
Brand: Goodman
SKU: GOODMAN-7235
Price: 24.95 USD
Availability: InStock

SKU: GOODMAN-7235 Brand: Goodman

$24.95 $32.95

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014

SAM.gov Registered

Govt POs Accepted

Goodman B1370198 Primary Limit Switch (150°F)

The Goodman B1370198 is a genuine OEM primary high-limit switch engineered for the AMS81405DNA gas furnace and compatible Goodman/Amana air handlers. This normally-closed thermal safety control monitors heat-exchanger and plenum temperature, opening the burner circuit if the furnace exceeds its 150°F trip point to prevent overheating, cracked heat exchangers, and nuisance shutdowns. If your furnace short-cycles on heat or trips out during long calls, a failed limit switch is a common culprit.

Trip Temperature: 150°F open on rise, auto-reset on cool
Type: Normally-closed primary high-limit safety switch
Fits Model: AMS81405DNA and select Goodman/Amana furnaces
Function: Overheat protection for the burner/blower circuit
Build: Bimetal snap-disc with factory-calibrated set point

OEM vs. Generic

Our OEM Goodman switch ships with the exact factory trip calibration and terminal geometry, so it drops in without rewiring or recalibration. Aftermarket generics may carry looser temperature tolerances that cause premature trips or fail to protect the heat exchanger. For a UL-listed safety component, we recommend genuine OEM.

Installation Difficulty

Easy (2/5). A DIY-friendly repair for handy owners: cut power at the breaker, remove two mounting screws, transfer the spade connectors, and reinstall. A multimeter continuity check confirms the diagnosis in minutes. If you are uncomfortable working near gas components, consult a licensed HVAC technician.

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 150°F Primary Limit ...

$24.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMS81405DNA — B1370198?

Yes. This is the factory-specified OEM limit switch for the Goodman AMS81405DNA — B1370198. 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 AMS81405DNA — B1370198?

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.

Menu