What are the specs for this Limit Switch?

The correct replacement for Goodman model ACEC960403BNAB — 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 ACEC960403BNAB — 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 Limit Switch for ACEC960403BNAB — 20162906

Name: OEM Goodman M4 Primary Limit Switch for ACEC960403BNAB — 20162906
Brand: Goodman
SKU: GOODMAN-108
Price: 14.95 USD
Availability: InStock

SKU: GOODMAN-108 Brand: Goodman

$14.95 $20.18

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Goodman 20162906 M4 Primary Limit Switch

The Goodman 20162906 is a genuine OEM M4 primary limit switch for the ACEC960403BNAB furnace. Mounted on the heat-exchanger/blower bulkhead, this auto-resetting control senses supply-air temperature and opens the gas-valve circuit if airflow is inadequate and the cabinet overheats. It is the furnace's primary thermal safety, protecting the heat exchanger from cracking and shutting down the burners during airflow faults such as a clogged filter or stalled blower.

Specifications

OEM Part Number: 20162906
Type: M4 primary high-limit switch
Function: Normally closed, opens on overtemperature
Reset: Automatic (recloses when temperature normalizes)
Compatibility: Goodman / Amana ACEC960403BNAB

OEM vs. Generic

The primary limit is a calibrated safety device. The genuine Goodman 20162906 has the correct trip temperature, disc location, and mounting bracket for this model. Generic limits with the wrong setpoint cause short cycling or fail to protect the unit. For any safety control, OEM is the right choice.

Installation Difficulty

Moderate (3/5). Disconnect power, remove the blower-compartment panel, unfasten the two mounting screws, transfer the wire connectors, and remount. Verify proper furnace operation and temperature rise after replacement.

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 Limit Swi...

$14.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman ACEC960403BNAB — 20162906?

Yes. This is the factory-specified OEM limit switch for the Goodman ACEC960403BNAB — 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 ACEC960403BNAB — 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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