What are the specs for this Limit Switch?

The correct replacement for Goodman model AMS80403AXAB — 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 AMS80403AXAB — 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 AMS80403AXAB — 20162901

Name: OEM Goodman Primary High Limit Switch for AMS80403AXAB — 20162901
Brand: Goodman
SKU: GOODMAN-6709
Price: 34.95 USD
Availability: InStock

SKU: GOODMAN-6709 Brand: Goodman

$34.95 $44.95

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The Goodman 20162901 is a genuine OEM primary high limit switch for the AMS80403AXAB 80,000 BTU, 80% AFUE gas furnace and compatible AMS80 series models. Mounted on the heat exchanger or supply plenum, this control monitors supply-air temperature and shuts off the burners if the furnace overheats — typically from restricted airflow such as a dirty filter or blower failure. It protects the heat exchanger from cracking and prevents unsafe operating temperatures.

Specifications

Part type: Primary high limit / auto-reset temperature switch
Part number: 20162901
Fits model: AMS80403AXAB and related AMS80 series furnaces
Function: Opens on temperature rise, closes on cool-down (auto reset)
Type: Normally-closed thermal limit control

OEM vs. Generic

This OEM limit is factory-calibrated to Goodman's exact trip temperature and mounting flange for this furnace. Generic limits with different set points can short-cycle the burners or fail to protect the heat exchanger. For a primary safety control, the OEM part is the reliable choice.

Installation Difficulty

Easy (1/5). Two-wire, screw-mounted replacement. Disconnect power before servicing. If the limit was tripping, correct the underlying airflow problem — replace the filter and verify blower operation — and consider a licensed HVAC technician if the fault persists.

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...

$34.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMS80403AXAB — 20162901?

Yes. This is the factory-specified OEM limit switch for the Goodman AMS80403AXAB — 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 AMS80403AXAB — 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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