What are the specs for this Limit Switch?

The correct replacement for Goodman model AMVC800804CXAA — 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 AMVC800804CXAA — 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 Control for AMVC800804CXAA — 20162904

Name: OEM Goodman Primary Limit Control for AMVC800804CXAA — 20162904
Brand: Goodman
SKU: GOODMAN-7964
Price: 49.95 USD
Availability: InStock

SKU: GOODMAN-7964 Brand: Goodman

$49.95 $64.95

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The Goodman 20162904 Primary Limit Temperature Control is a genuine OEM safety and operating control for the AMVC800804CXAA two-stage variable-speed 80% AFUE gas furnace. Mounted on the heat-exchanger bulkhead, the primary limit continuously senses supply-air temperature. It closes the gas valve if the plenum overheats — typically from restricted airflow, a dirty filter, or a failed blower — protecting the heat exchanger from cracking and preventing a fire hazard. It also coordinates blower operation on temperature.

Specifications

OEM Part Number: 20162904
Component Type: Primary high-limit temperature control
Function: Opens gas circuit on plenum over-temperature
Reset: Automatic (self-resets once temperature normalizes)
Fits: Goodman & Amana AMVC800804CXAA and compatible 80% AFUE furnaces

OEM vs. Generic

The primary limit must trip at a factory-specified temperature matched to this furnace's cabinet and airflow design. The OEM 20162904 carries the correct set point and mounting footprint. A generic limit with a different cut-out temperature can either fail to protect the heat exchanger or short-cycle the furnace on the limit. For a heat-exchanger safety control, OEM is the right choice.

Installation Difficulty: Moderate

Disconnect power and gas, unplug the wiring, remove the mounting screws, and install the new 20162904 in the identical position and orientation so the sensing element reads plenum temperature correctly. If the old limit was tripping, a technician should first correct the airflow restriction that caused the overheat.

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 Contro...

$49.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMVC800804CXAA — 20162904?

Yes. This is the factory-specified OEM limit switch for the Goodman AMVC800804CXAA — 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 AMVC800804CXAA — 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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