What are the specs for this Limit Switch?

The correct replacement for Goodman model AMH80403AXBB — 20162901 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 AMH80403AXBB — 20162901.

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 Primary High-Limit Switch for AMH80403AXBB — 20162901

Name: OEM Goodman Primary High-Limit Switch for AMH80403AXBB — 20162901
Brand: Goodman
SKU: GOODMAN-4974
Price: 44.95 USD
Availability: InStock

SKU: GOODMAN-4974 Brand: Goodman

$44.95 $59.95

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Goodman 20162901 Primary Limit Switch

The Goodman 20162901 is a genuine OEM primary high-limit switch designed for the AMH80403AXBB gas furnace. Mounted on the heat-exchanger or blower deck, this temperature-sensing safety control monitors supply-air heat and opens the gas circuit if the furnace overheats — typically from a dirty filter, failed blower, or restricted ductwork. When the temperature returns to normal, the auto-reset switch closes and allows the furnace to fire again. A furnace that short-cycles on limit or fails to heat is often traced to a faulty primary limit switch.

Specifications

Part Number: 20162901
Type: Primary high-limit switch (auto reset)
Circuit: Normally closed (opens on overheat)
Function: Supply-air over-temperature protection
Fits: Goodman/Amana AMH80403AXBB furnace
Type: OEM exact-fit replacement safety control

OEM vs. Generic

The genuine OEM 20162901 is matched to Goodman's precise trip and reset temperatures and mounting footprint, ensuring proper over-temperature protection and correct furnace cycling. Generic limit switches with mismatched set points can cause nuisance trips or, worse, fail to protect the heat exchanger. For safe, reliable operation, OEM is the correct choice.

Install Difficulty: Easy

A common DIY repair. With power off, remove the two wire terminals, unscrew the switch from the burner box or blower deck, and mount the new switch in the identical position with the sensing element in the airstream. Reconnect the wiring. Estimated time: 10-15 minutes. Check the filter and blower to rule out the root cause of overheating.

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 High-Limit S...

$44.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMH80403AXBB — 20162901?

Yes. This is the factory-specified OEM limit switch for the Goodman AMH80403AXBB — 20162901. 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 AMH80403AXBB — 20162901?

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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