What are the specs for this Limit Switch?

The correct replacement for Goodman model AMS80603AXAA — 20162904 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 AMS80603AXAA — 20162904.

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 Limit Temperature Control for AMS80603AXAA — 20162904

Name: OEM Goodman Primary Limit Temperature Control for AMS80603AXAA — 20162904
Brand: Goodman
SKU: GOODMAN-6781
Price: 35.95 USD
Availability: InStock

SKU: GOODMAN-6781 Brand: Goodman

$35.95 $46.75

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30-Day Returns

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Texas CMBL #19328542014

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The Goodman 20162904 Primary Limit Temperature Control is a genuine OEM high-limit safety switch for AMS80603AXAA gas furnaces. Mounted on the heat exchanger or burner box, this thermally activated switch continuously monitors supply-air temperature and shuts off the burners if the furnace overheats — protecting the heat exchanger and preventing unsafe operation. A failed or nuisance-tripping limit is a common cause of furnaces that short-cycle or won't fire, so an exact-fit replacement restores safe, dependable heating.

Specifications

Function: Primary high-limit safety control
Type: Auto-reset thermal limit switch
Application: Overheat protection / burner cutoff
OEM Part #: 20162904
Fits model: AMS80603AXAA (and compatible Goodman/Amana furnaces)
Brand: Goodman

OEM vs. Generic

This genuine Goodman OEM limit control is calibrated to your furnace's exact trip temperature and cut-in point. Universal or generic limits require matching the correct temperature rating and mounting style — a mismatch can cause premature tripping or, worse, fail to protect the heat exchanger. Because this is a safety device, we strongly recommend the OEM part.

Installation Difficulty

Moderate (2/5). Typically two mounting screws and two spade terminals. Shut off power and gas, note wire positions before disconnecting, and confirm the temperature rating matches. A licensed technician is recommended for safety-critical controls.

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 Limit Temper...

$35.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMS80603AXAA — 20162904?

Yes. This is the factory-specified OEM limit switch for the Goodman AMS80603AXAA — 20162904. 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 AMS80603AXAA — 20162904?

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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