What are the specs for this Limit Switch?

The correct replacement for Goodman model GKS90904CXAF — 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 GKS90904CXAF — 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 GKS90904CXAF — 20162904

Name: OEM Goodman Primary Limit Temperature Control for GKS90904CXAF — 20162904
Brand: Goodman
SKU: GOODMAN-10809
Price: 54.95 USD
Availability: InStock

SKU: GOODMAN-10809 Brand: Goodman

$54.95 $71.95

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The Goodman 20162904 Primary Limit Temperature Control is a genuine OEM high-limit safety switch for the GKS90904CXAF gas furnace and related Goodman/Amana models. Mounted on the heat-exchanger bulkhead, the primary limit continuously monitors supply-plenum temperature. If airflow is lost or the furnace overheats, it opens to shut down the gas valve, protecting the heat exchanger from cracking and preventing dangerous overheating. As the primary limit, it is the furnace's central over-temperature guardian.

Specifications

Type: Primary high-limit temperature control (auto-reset, normally closed)
Function: Plenum / heat-exchanger over-temperature safety cutout
Sensing: Bimetal disc calibrated to factory trip temperature
Terminals: Quick-connect spade
Mounting: Factory bracket on heat-exchanger panel
Fits: Goodman GKS90904CXAF and compatible gas furnaces
Brand: Goodman OEM (Amana compatible)

OEM vs. Generic

The genuine 20162904 is calibrated to the precise cutout temperature and sensing-element length this furnace requires. The primary limit is the single most important thermal safety on the appliance — an incorrectly-rated generic can allow the heat exchanger to overheat and crack (a CO hazard) or trip early and leave the home without heat. OEM guarantees the correct setpoint, exact bracket fit, and preserved UL listing.

Installation Difficulty

Moderate (3/5) — Turn off gas and power, photograph the wiring, remove the mounting screws, and transfer the spade connectors to the new control in the same orientation. Ensure the sensing element seats correctly in the airstream. Because a mis-set primary limit is a safety issue, professional installation and a heat-rise check are recommended.

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...

$54.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman GKS90904CXAF — 20162904?

Yes. This is the factory-specified OEM limit switch for the Goodman GKS90904CXAF — 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 GKS90904CXAF — 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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