What are the specs for this Limit Switch?

The correct replacement for Goodman model AMS80604BXAB — 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 AMS80604BXAB — 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 AMS80604BXAB — 20162904

Name: OEM Goodman Primary Limit Temperature Control for AMS80604BXAB — 20162904
Brand: Goodman
SKU: GOODMAN-6834
Price: 35.95 USD
Availability: InStock

SKU: GOODMAN-6834 Brand: Goodman

$35.95 $47.95

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The Goodman 20162904 Primary Limit Temperature Control is a genuine OEM high-limit safety switch for Goodman and Amana AMS80604BXAB 80% single-stage gas furnaces. Mounted on the heat-exchanger bulkhead, this auto-reset limit continuously monitors supply-air temperature and shuts off the gas valve if the furnace overheats — protecting the heat exchanger from cracking due to restricted airflow, a dirty filter, or blower failure.

Specifications

Part type: Primary auto-reset high-limit temperature control
Reset: Automatic (recloses when temperature returns to normal)
Contacts: Normally closed, opens on over-temp
Mount: Bulkhead / heat-exchanger surface bracket
OEM Part Number: 20162904
Primary fit: AMS80604BXAB (80% single-stage furnace)

OEM vs. Generic

The primary limit is factory-calibrated to the AMS80604's exact cutout temperature. Goodman OEM controls trip at the engineered setpoint; a generic replacement with a different setpoint can cause repeated nuisance lockouts or, worse, allow dangerous overheating. For primary safety controls, always install the OEM-spec part.

Install Difficulty

Easy to Moderate (2 of 5). Usually two mounting screws and two spade terminals, but correct placement against the heat exchanger is essential. Disconnect power and gas before servicing, and diagnose airflow before assuming the limit is faulty — frequent trips usually signal a dirty filter, blocked coil, or weak blower. When unsure, consult a licensed HVAC technician.

Fits Goodman and Amana furnaces on the AMS80604 platform. Verify your model and part number before ordering.

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 AMS80604BXAB — 20162904?

Yes. This is the factory-specified OEM limit switch for the Goodman AMS80604BXAB — 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 AMS80604BXAB — 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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