What are the specs for this Limit Switch?

The correct replacement for Goodman model AMS80805CXAB — 20162903 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 AMS80805CXAB — 20162903.

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 150°F Primary Limit Switch for AMS80805CXAB — 20162903

Name: OEM Goodman 150°F Primary Limit Switch for AMS80805CXAB — 20162903
Brand: Goodman
SKU: GOODMAN-7003
Price: 19.95 USD
Availability: InStock

SKU: GOODMAN-7003 Brand: Goodman

$19.95 $26.95

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The Goodman 20162903 is a genuine OEM primary limit switch with a 150°F set point for AMS80805CXAB gas furnaces. Mounted on the heat-exchanger/blower bulkhead, this auto-reset control opens the gas/ignition circuit if supply-air temperature climbs past its rating — the furnace's front-line protection against overheating from restricted airflow. When temperatures fall back into range, it recloses automatically. A failed primary limit is a common cause of short-cycling or a furnace that won't fire.

Specifications

Type: Primary limit switch (auto reset)
Set point: 150°F (opens on rise)
Action: SPST, normally closed
Terminals: 1/4 in. quick-connect (typical)
Fits: Goodman/Amana AMS80805CXAB and related 80% furnaces
OEM Part #: 20162903

OEM vs. Generic

The trip temperature and mounting geometry are calibrated to this furnace. Generic limits at a different set point can nuisance-trip on normal operation or allow the exchanger to overheat. For a primary safety control, OEM is strongly recommended.

Installation

Difficulty: Easy. Shut off power and gas, unplug the spade terminals, remove the two mounting screws, and install the replacement in the same position and orientation. Usually 10–20 minutes. If the switch had been tripping, correct the airflow restriction (clogged filter, closed dampers, weak blower) before returning to service.

Confirm your model number before ordering. Backed by our fast-ship guarantee.

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 ...

$19.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMS80805CXAB — 20162903?

Yes. This is the factory-specified OEM limit switch for the Goodman AMS80805CXAB — 20162903. 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 AMS80805CXAB — 20162903?

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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