What are the specs for this Limit Switch?

The correct replacement for Goodman model AMH81005CNBB — 20162904 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 AMH81005CNBB — 20162904.

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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OEM Goodman Primary Limit Temperature Control for AMH81005CNBB — 20162904

Name: OEM Goodman Primary Limit Temperature Control for AMH81005CNBB — 20162904
Brand: Goodman
SKU: GOODMAN-5928
Price: 54.95 USD
Availability: InStock

SKU: GOODMAN-5928 Brand: Goodman

$54.95 $72.95

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The Goodman 20162904 Primary Limit Temperature Control is a genuine OEM high-limit safety switch for the AMH81005CNBB gas furnace and compatible Goodman/Amana models. Mounted on the heat-exchanger/plenum bulkhead, the primary limit continuously monitors supply-air temperature. If the furnace overheats — most commonly from a dirty filter, closed registers, a failed blower, or restricted ductwork — the control opens to de-energize the gas valve and protect the heat exchanger from thermal damage. It is the furnace's principal over-temperature safety device.

Part number: 20162904
Type: Primary high-limit temperature control
Reset: Automatic (recloses when temperature returns to normal)
Action: Normally closed, opens on over-temperature
Fits: Goodman & Amana AMH81005CNBB and related furnace platforms

OEM vs. Generic: The genuine Goodman 20162904 is factory-set to the precise cut-out and cut-in temperatures for this furnace and uses the correct probe/insertion length and mounting flange. A generic control with a different setpoint or probe depth can short-cycle the furnace on limit or allow the heat exchanger to overheat. As a critical safety and heat-exchanger protection component, the OEM part is strongly recommended.

Install difficulty: Moderate (3/5). Turn off power and gas, photograph and disconnect the wiring, remove the two mounting screws, and withdraw the sensing element from the airstream. Install the replacement in the identical orientation and insertion depth, then reconnect. Always address the root cause of overheating (replace the filter, verify blower operation, and check airflow) before restoring 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 Primary Limit Temper...

$54.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMH81005CNBB — 20162904?

Yes. This is the factory-specified OEM limit switch for the Goodman AMH81005CNBB — 20162904. 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 AMH81005CNBB — 20162904?

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 Primary Limit Temperature Control for AMH81005CNBB — 20162904

Shipping Information

Return Policy

Frequently Asked Questions