What are the specs for this Limit Switch?

The correct replacement for Goodman model OEM Goodman M4 Primary Limit Switch AMVM970803BNBA — 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 OEM Goodman M4 Primary Limit Switch AMVM970803BNBA — 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 AMVM970803BNBA — 20162906

Name: OEM Goodman M4 Primary Limit Switch AMVM970803BNBA — 20162906
Brand: Goodman
SKU: GOODMAN-9274
Price: 27.95 USD
Availability: InStock

SKU: GOODMAN-9274 Brand: Goodman

$27.95 $35.95

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The Goodman 20162906 M4 Primary Limit Switch is a genuine OEM high-limit safety control for the Amana/Goodman AMVM970803BNBA modulating variable-speed gas furnace. Mounted on the heat exchanger/plenum, this primary limit monitors supply-air temperature and opens the control circuit if the furnace overheats — typically from restricted airflow such as a clogged filter, closed vents, or a failing blower. It is the furnace's main over-temperature protection during normal heating cycles.

OEM Part #: 20162906
Fits Model: AMVM970803BNBA (AMVM97 modulating series)
Type: M4 primary high-limit switch (auto-reset)
Function: Opens circuit on plenum over-temperature
Brand: Goodman / Amana OEM

OEM vs. Generic: The primary limit is calibrated to a specific trip and reset temperature matched to this furnace's heat exchanger and airflow design. The genuine 20162906 uses Goodman's engineered M4 set point; a mismatched generic switch causes nuisance short-cycling or fails to protect the heat exchanger. As a safety control, it should always be replaced with the exact OEM part.

Install Difficulty: Moderate (2/5). Turn off gas and power at the disconnect. Photograph and disconnect the wiring, remove the mounting screws, and install the new limit on the same bracket location so its sensing element sits correctly in the airstream. Reconnect, restore power, and run a full heat cycle to confirm normal shutdown at end of call. Address any underlying airflow restriction before returning the furnace to service.

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...

$27.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman OEM Goodman M4 Primary Limit Switch AMVM970803BNBA — 20162906?

Yes. This is the factory-specified OEM limit switch for the Goodman OEM Goodman M4 Primary Limit Switch AMVM970803BNBA — 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 OEM Goodman M4 Primary Limit Switch AMVM970803BNBA — 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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OEM Goodman M4 Primary Limit Switch AMVM970803BNBA — 20162906

Shipping Information

Return Policy

Frequently Asked Questions