What are the specs for this Limit Switch?

The correct replacement for Goodman model AMH80805CNBB — 20162903 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 AMH80805CNBB — 20162903.

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 150°F Primary Limit Switch for AMH80805CNBB — 20162903

Name: OEM Goodman 150°F Primary Limit Switch for AMH80805CNBB — 20162903
Brand: Goodman
SKU: GOODMAN-5621
Price: 27.95 USD
Availability: InStock

SKU: GOODMAN-5621 Brand: Goodman

$27.95 $36.95

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Goodman 20162903 Primary Limit Switch (150°F)

The OEM Goodman 20162903 primary high-limit switch protects the Amana AMH80805CNBB 80,000 BTU gas furnace from overheating. Mounted on the heat exchanger partition, this 150°F auto-reset control opens the circuit if supply-air temperature climbs above its rated setpoint — typically caused by a dirty filter, blocked ductwork, or a failing blower — and closes again automatically once temperatures return to safe levels.

Specifications

Type: Primary high-limit switch
Trip temperature: 150°F
Reset: Automatic (snap-disc)
Fit: Amana/Goodman AMH80805CNBB furnace
Part number: 20162903 (OEM)

OEM vs. Generic

Genuine OEM ensures the exact 150°F calibration the furnace board expects. Aftermarket limits with the wrong setpoint cause short cycling or, worse, allow the heat exchanger to run hotter than designed. This factory part drops in without recalibration.

Installation Difficulty

Easy (2/5). Remove the two mounting screws, disconnect the spade terminals, and swap in the new switch — about 15 minutes with the furnace powered down. Verify airflow and filter condition to avoid repeat trips.

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 150°F Primary Limit ...

$27.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMH80805CNBB — 20162903?

Yes. This is the factory-specified OEM limit switch for the Goodman AMH80805CNBB — 20162903. 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 AMH80805CNBB — 20162903?

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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