What are the specs for this Limit Switch?

The correct replacement for Goodman model AMEC961004CNAA — 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 AMEC961004CNAA — 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 M4 Primary High-Limit Switch for AMEC961004CNAA — 20162906

Name: OEM Goodman M4 Primary High-Limit Switch for AMEC961004CNAA — 20162906
Brand: Goodman
SKU: GOODMAN-4272
Price: 9.95 USD
Availability: InStock

SKU: GOODMAN-4272 Brand: Goodman

$9.95 $12.95

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The Goodman 20162906 M4 primary limit switch is a genuine OEM temperature control for the AMEC961004CNAA gas furnace. Mounted in the heat-exchanger air stream, the primary limit protects the furnace from overheating caused by restricted airflow — a clogged filter, blocked return, or failing blower. When supply air exceeds the switch's set point, it opens the control circuit to shut down the gas valve; it re-closes once temperatures return to a safe range.

Specifications

Type: M4-series primary high-limit switch
Action: Opens on overtemperature, auto-reset on cooldown
Factory-calibrated trip temperature specific to this model
Normally closed 24V control-circuit contacts
Fit: OEM Goodman / Amana AMEC961004CNAA
OEM Part Number: 20162906

OEM vs. Generic

The genuine OEM 20162906 is matched to the exact insertion depth, set point, and bracket of the AMEC961004CNAA. Generic limits often use a different trip temperature or probe length, causing short-cycling on heat or letting the exchanger run too hot. For a primary safety limit, the correct OEM part is worth it.

Installation Difficulty

Moderate (2/5). Cut power at the breaker, open the blower/heat-exchanger panel, disconnect the terminals, remove the mounting screws, and swap in the new switch at the same depth. Restore any airflow issues before returning to service. Have a licensed HVAC tech assist if you are not comfortable around the burner assembly.

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 M4 Primary High-Limi...

$9.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMEC961004CNAA — 20162906?

Yes. This is the factory-specified OEM limit switch for the Goodman AMEC961004CNAA — 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 AMEC961004CNAA — 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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