What are the specs for this Limit Switch?

The correct replacement for Goodman model AMH80905CXCA — 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 AMH80905CXCA — 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.

IMAGE COMING SOON

Goodman

OEM Goodman M4 Primary Limit Switch for AMH80905CXCA — 20162906

Name: OEM Goodman M4 Primary Limit Switch for AMH80905CXCA — 20162906
Brand: Goodman
SKU: GOODMAN-5884
Price: 14.95 USD
Availability: InStock

SKU: GOODMAN-5884 Brand: Goodman

$14.95 $19.49

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014

SAM.gov Registered

Govt POs Accepted

The Goodman 20162906 M4 Primary Limit Switch is a genuine OEM high-limit safety control for the Amana/Goodman AMH80905CXCA 80% AFUE gas furnace. Mounted on the heat-exchanger/blower bulkhead, this primary limit monitors supply-air temperature and interrupts the gas valve if the furnace overheats — typically caused by restricted airflow such as a dirty filter or blower failure. The M4 disc automatically resets once temperatures return to a safe range.

Specifications

Part type: Primary high-limit switch (M4)
OEM part number: 20162906
Configuration: Normally closed, auto-reset
Mount: Bracket-mounted disc limit
Terminals: 1/4 in. quick-connect spade
Application: Goodman/Amana 80% AFUE gas furnaces

OEM vs. Generic

The genuine 20162906 is factory-calibrated to the exact trip temperature this furnace requires. A generic limit with the wrong setpoint or bracket profile can nuisance-trip, mis-mount, or fail to protect the heat exchanger. As a primary safety component, OEM is the only recommended replacement.

Installation Difficulty: Easy

Rated 2 of 5. Remove the two mounting screws, transfer the spade connectors, and install the new limit in the same orientation. If the limit trips repeatedly, diagnose airflow (filter, blower, ductwork) before assuming the switch has failed. Shut off gas and power before servicing.

Genuine OEM Goodman part. Confirm your furnace model and limit temperature rating before ordering.

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 AMH80905CXCA — 20162906?

Yes. This is the factory-specified OEM limit switch for the Goodman AMH80905CXCA — 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 AMH80905CXCA — 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.

Menu