What are the specs for this Limit Switch?

The correct replacement for Goodman model AMEC961004CNAC — 20162906 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 AMEC961004CNAC — 20162906.

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 Amana M4 Primary Limit Switch for AMEC961004CNAC — 20162906

Name: OEM Goodman Amana M4 Primary Limit Switch for AMEC961004CNAC — 20162906
Brand: Goodman
SKU: GOODMAN-4293
Price: 9.95 USD
Availability: InStock

SKU: GOODMAN-4293 Brand: Goodman

$9.95 $12.95

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Genuine Goodman/Amana 20162906 M4 Primary Limit Switch

The 20162906 M4 primary limit switch is a factory-original thermal safety control that monitors supply-air temperature in the heat-exchanger compartment of Goodman and Amana gas furnaces. If the furnace overheats — typically from restricted airflow such as a dirty filter or failed blower — the switch opens to shut off the burners, then automatically resets once temperatures return to normal. It is a direct-fit replacement for the AMEC961004CNAC and related AMEC-series models.

Specifications

Part number: 20162906 (M4 series)
Type: Primary auto-reset high-limit switch
Reset: Automatic (self-resetting)
Function: Opens burner circuit on high supply-air temperature
Fits: Goodman & Amana AMEC961004CNAC furnace

OEM vs. Generic

The OEM 20162906 is factory-calibrated to the correct trip and reset temperatures and matches the original mounting footprint. Generic replacements often differ in set-point or bracket, causing short-cycling or inadequate overheat protection. For a safety-rated primary limit, genuine OEM is the reliable choice.

Installation Difficulty

Rating: Moderate (2/5). Disconnect power, remove two mounting screws, transfer the spade terminals, and reinstall. Roughly 15 minutes. If the original limit was tripping, inspect the air filter, blower, and ductwork for restrictions before restarting.

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 Amana M4 Primary Lim...

$9.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMEC961004CNAC — 20162906?

Yes. This is the factory-specified OEM limit switch for the Goodman AMEC961004CNAC — 20162906. 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 AMEC961004CNAC — 20162906?

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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