What are the specs for this Limit Switch?

The correct replacement for Goodman model OEM Goodman 150°F Primary Limit Switch AMES920805CNAA — 20162903 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 OEM Goodman 150°F Primary Limit Switch AMES920805CNAA — 20162903.

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 150°F Primary Limit Switch AMES920805CNAA — 20162903

Name: OEM Goodman 150°F Primary Limit Switch AMES920805CNAA — 20162903
Brand: Goodman
SKU: GOODMAN-4743
Price: 8.95 USD
Availability: InStock

SKU: GOODMAN-4743 Brand: Goodman

$8.95 $11.95

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Goodman 20162903 Primary Limit Switch (150°F)

The 20162903 is a genuine OEM Goodman primary limit switch with a 150°F trip point, built for the AMES920805CNAA gas furnace. Mounted on the heat exchanger or supply-air plenum, this snap-disc safety monitors supply-air temperature and de-energizes the gas valve if the furnace overheats — typically due to restricted airflow from a clogged filter or blocked ducting. It resets automatically once temperatures return to normal.

Specifications

OEM Part Number: 20162903
Part Type: Primary High-Limit Switch
Trip Temperature: 150°F
Reset: Automatic (snap-disc)
Function: Overheat / airflow-failure safety cutoff
Brand: Goodman / Amana
Compatible Model: AMES920805CNAA (gas furnace)

OEM vs. Generic

The 150°F calibration is matched to the AMES920805CNAA's airflow and heat-exchanger design. Genuine OEM 20162903 switches trip at the exact factory temperature, preventing nuisance lockouts while ensuring true overheat protection. Generic snap-discs with the wrong rating can shut the furnace down prematurely or fail to protect it.

Installation Difficulty

Moderate (2/5) — Power down the furnace, remove the two mounting screws, transfer the wire leads to the matching terminals, and remount flush against the mounting surface for accurate sensing. Confirm continuity with a meter after install.

Fits the AMES920805CNAA and related Goodman/Amana models. Verify the original part number and temperature rating 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 150°F Primary Limit ...

$8.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman OEM Goodman 150°F Primary Limit Switch AMES920805CNAA — 20162903?

Yes. This is the factory-specified OEM limit switch for the Goodman OEM Goodman 150°F Primary Limit Switch AMES920805CNAA — 20162903. 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 OEM Goodman 150°F Primary Limit Switch AMES920805CNAA — 20162903?

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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