What are the specs for this Limit Switch?

The correct replacement for Goodman model AMH81005CXBA — 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 AMH81005CXBA — 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 AMH81005CXBA — 20162904

Name: OEM Goodman Primary Limit Temperature Control for AMH81005CXBA — 20162904
Brand: Goodman
SKU: GOODMAN-5963
Price: 59.95 USD
Availability: InStock

SKU: GOODMAN-5963 Brand: Goodman

$59.95 $79.95

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The Goodman 20162904 Primary Limit Temperature Control is the genuine OEM high-limit switch for the AMH81005CXBA furnace and compatible Goodman/Amana models. Mounted on the heat-exchanger bulkhead, this primary limit continuously monitors supply-air temperature and interrupts the gas valve if the furnace overheats — typically from restricted airflow, a failing blower, or a clogged filter. It is the furnace's main line of overtemp protection and is an auto-reset (snap-disc) style control.

Specifications

Part type: Primary high-limit temperature control
OEM Part Number: 20162904
Reset: Automatic (snap-disc)
Function: Opens gas circuit on high supply-air temp
Fits: Goodman/Amana AMH81005CXBA and related furnaces

OEM vs. Generic

The OEM 20162904 ships with the exact cut-out/cut-in temperatures and mounting bracket your furnace was engineered around. Generic limits with the wrong trip point cause short-cycling on heat or fail to protect the heat exchanger. For a control this central to safe operation, genuine OEM is strongly recommended.

Install Difficulty

Easy to Moderate (2/5). Shut off power and gas, remove the two mounting screws and wiring connectors, and install the replacement in the same orientation. Roughly 15–20 minutes. If the furnace continues to trip on limit, correct the airflow restriction rather than repeatedly resetting.

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...

$59.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMH81005CXBA — 20162904?

Yes. This is the factory-specified OEM limit switch for the Goodman AMH81005CXBA — 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 AMH81005CXBA — 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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