What are the specs for this Limit Switch?

The correct replacement for Goodman model AMES800603AXAA — 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 AMES800603AXAA — 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 AMES800603AXAA — 20162904

Name: OEM Goodman Primary Limit Temperature Control for AMES800603AXAA — 20162904
Brand: Goodman
SKU: GOODMAN-4605
Price: 35.95 USD
Availability: InStock

SKU: GOODMAN-4605 Brand: Goodman

$35.95 $46.95

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The Goodman 20162904 Primary Limit Temperature Control is a genuine OEM high-limit safety switch engineered for the AMES800603AXAA 80% AFUE gas furnace and other compatible Goodman and Amana models. This automatic-reset thermal limit continuously monitors heat-exchanger and plenum temperature, cutting power to the gas valve if the furnace overheats due to restricted airflow, a dirty filter, or a failed blower — protecting the heat exchanger from cracking and preventing unsafe operation.

Part type: Primary high-limit temperature control (automatic reset)
Function: Overtemperature safety cutout for the gas valve circuit
Fit: AMES800603AXAA and compatible Goodman/Amana 80% furnaces
Mounting: Snap-mount to heat-exchanger bulkhead, spade terminal connections
Type: Direct-replacement OEM component

OEM vs. Generic

The genuine OEM 20162904 is calibrated to the exact trip and reset temperatures specified by Goodman for this furnace, ensuring the safety circuit behaves as the equipment was certified. Universal or generic limit switches often carry approximate trip points that can cause nuisance lockouts or, worse, delayed cutout. For a safety-critical control we strongly recommend the OEM part.

Installation Difficulty

Moderate — Requires shutting off gas and power, removing the burner-compartment panel, transferring the two spade connectors, and confirming correct orientation. A knowledgeable DIYer can complete it in about 30 minutes; if you are unsure about a furnace safety control, use a licensed HVAC technician. Always cycle the furnace and verify normal shutoff after replacement.

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 AMES800603AXAA — 20162904?

Yes. This is the factory-specified OEM limit switch for the Goodman AMES800603AXAA — 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 AMES800603AXAA — 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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