What are the specs for this Limit Switch?

The correct replacement for Goodman model AMVM970804CNAA — 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 AMVM970804CNAA — 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 for AMVM970804CNAA — 20162903

Name: OEM Goodman 150°F Primary Limit Switch for AMVM970804CNAA — 20162903
Brand: Goodman
SKU: GOODMAN-20162903
Price: 32.95 USD
Availability: InStock

SKU: GOODMAN-20162903 Brand: Goodman

$32.95 $42.95

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The Goodman 20162903 Primary Limit Switch is a genuine OEM 150°F high-limit safety control for the AMVM970804CNAA variable-speed modulating gas furnace. Mounted on the heat-exchanger partition, this snap-disc switch monitors supply-air temperature and opens the gas-valve circuit if the furnace overheats — typically from restricted airflow, a dirty filter, or blower failure. Unlike the manual-reset rollout switch, the primary limit is auto-reset: it re-closes once temperatures return to normal, cycling the burner to keep the heat exchanger within safe limits.

Specifications

Part Number: 20162903 (OEM Goodman/Amana)
Type: Primary high-limit snap-disc switch
Trip Setpoint: 150°F (opens on rise)
Reset: Automatic
Contacts: Normally closed
Fits: Goodman/Amana AMVM970804CNAA and compatible AMVM97-series furnaces

OEM vs. Generic

The OEM limit switch is factory-calibrated to the correct 150°F trip point and matches Goodman's mounting bracket and disc size exactly. Generic switches with a different setpoint can cause short-cycling or fail to protect the heat exchanger. For a safety-critical control, always fit the OEM part.

Installation Difficulty

Moderate — remove two screws, transfer the wiring, and confirm the disc seats flat against the heat-exchanger panel for accurate sensing. Recommended for HVAC technicians; also inspect airflow to find why it tripped. De-energize power and gas before servicing. Typical install: 20–30 minutes.

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 ...

$32.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMVM970804CNAA — 20162903?

Yes. This is the factory-specified OEM limit switch for the Goodman AMVM970804CNAA — 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 AMVM970804CNAA — 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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