What are the specs for this Limit Switch?

The correct replacement for Goodman model AMS80804BXAD — 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 AMS80804BXAD — 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 AMS80804BXAD — 20162904

Name: OEM Goodman Primary Limit Temperature Control for AMS80804BXAD — 20162904
Brand: Goodman
SKU: GOODMAN-6984
Price: 35.95 USD
Availability: InStock

SKU: GOODMAN-6984 Brand: Goodman

$35.95 $46.95

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The Goodman 20162904 Primary Limit Temperature Control is the genuine OEM high-limit safety device for the AMS80804BXAD furnace. Mounted on the heat-exchanger bulkhead, this primary limit continuously senses supply-air temperature and opens the control circuit if the furnace exceeds its safe operating range — cutting the gas valve to protect the heat exchanger, wiring, and cabinet from heat damage. Unlike a manual-reset switch, the primary limit is typically an auto-reset control that closes again once temperatures return to normal, so it also cycles the burners on airflow faults.

Specifications

Part Number: 20162904
Type: Primary limit / high-temperature safety control
Action: Normally closed, opens on overtemperature (auto-reset)
Fits Model: AMS80804BXAD (80% AFUE, 80,000 BTU furnace)
Brand: Goodman OEM

OEM vs. Generic

The OEM 20162904 uses the exact trip setpoint, sensing-element length, and mounting flange Goodman specified for this furnace. A generic limit with the wrong temperature rating or probe depth can nuisance-trip on every call for heat, or worse, fail to protect against a genuine overheat. For this safety-critical control, the factory OEM part is the correct and recommended replacement.

Installation Difficulty

Easy (1/5). Disconnect power, note terminal orientation, unplug the wire leads, remove the two mounting screws, and install the new limit flush against the heat-exchanger panel so the probe seats correctly. Reconnect and run a heat cycle to confirm normal operation. About 15–20 minutes. If it keeps tripping, investigate airflow before replacing again.

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 AMS80804BXAD — 20162904?

Yes. This is the factory-specified OEM limit switch for the Goodman AMS80804BXAD — 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 AMS80804BXAD — 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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