What are the specs for this Limit Switch?

The correct replacement for Goodman model AMS80403AXAD — 20162901 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 AMS80403AXAD — 20162901.

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 Primary High Limit Switch for AMS80403AXAD — 20162901

Name: OEM Goodman Primary High Limit Switch for AMS80403AXAD — 20162901
Brand: Goodman
SKU: GOODMAN-6731
Price: 26.95 USD
Availability: InStock

SKU: GOODMAN-6731 Brand: Goodman

$26.95 $34.95

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The Goodman 20162901 Primary High Limit Switch is a genuine OEM safety control for the AMS80403AXAD 80% AFUE gas furnace and compatible Goodman/Amana models. Mounted on the heat-exchanger bulkhead, this auto-reset thermal switch opens the gas valve circuit if supply-air temperature climbs too high — protecting the heat exchanger from cracking due to restricted airflow, a failed blower, or a dirty filter. A failed limit switch typically shows up as short-cycling on heat or a furnace that will not fire at all.

Specifications

Function: Primary high-temperature limit / overheat cutout
Reset: Automatic (snap-disc)
Mounting: Factory bracket on heat-exchanger panel
Fits: AMS80403AXAD and compatible 80% AFUE furnaces
OEM Part Number: 20162901

OEM vs. Generic

OEM limits are calibrated to the exact open/close temperature the furnace was certified for. A generic switch with the wrong trip point may nuisance-trip in normal operation or, worse, fail to protect the heat exchanger. Because this is a life-safety control, OEM is strongly recommended.

Installation Difficulty

Easy (2/5). Cut power at the disconnect, unplug the two spade terminals, remove the mounting screws, and swap in the new switch. Restore power and verify a normal heat cycle. Do not bypass a tripping limit — diagnose the airflow restriction 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 Primary High Limit S...

$26.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMS80403AXAD — 20162901?

Yes. This is the factory-specified OEM limit switch for the Goodman AMS80403AXAD — 20162901. 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 AMS80403AXAD — 20162901?

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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