What are the specs for this Limit Switch?

The correct replacement for Goodman model AMS81405DNBA — 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 AMS81405DNBA — 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 150F Primary High-Limit Switch for AMS81405DNBA — 20162903

Name: OEM Goodman 150F Primary High-Limit Switch for AMS81405DNBA — 20162903
Brand: Goodman
SKU: GOODMAN-20162903
Price: 8.95 USD
Availability: InStock

SKU: GOODMAN-20162903 Brand: Goodman

$8.95 $11.95

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Goodman 20162903 Primary High-Limit Switch (150°F)

The Goodman 20162903 is a genuine OEM primary high-limit switch with a 150°F trip point, built for the AMS81405DNBA gas furnace and compatible Goodman & Amana models. Mounted on the heat-exchanger partition, this control senses supply-air temperature and opens the burner/gas-valve circuit if the furnace overheats — typically caused by a dirty filter, blocked ductwork, or a failed blower. It is the furnace's front-line overheat protection and resets automatically once temperatures return to a safe range.

Specifications

Trip temperature: 150°F (opens on rise)
Type: Primary high-limit, auto-reset snap-disc
Contacts: Normally closed (SPST)
Mounting: Heat-exchanger / vestibule panel, OEM bracket
Fits: Goodman/Amana AMS81405DNBA and related gas furnaces

OEM vs. Generic

The OEM 20162903 is factory-matched to the 150°F set point and the exact insertion depth of the heat exchanger. Generic snap discs with the wrong trip temperature or probe length can allow the furnace to run too hot or trip prematurely, causing short-cycling and reduced heat-exchanger life. Genuine OEM ensures correct calibration and fit.

Install Difficulty

Easy (2/5). Kill power, disconnect the two spade terminals, remove the mounting screws, and install the replacement in the same orientation. No calibration required. If the limit keeps tripping, check airflow (filter, blower, ducts) before condemning the switch.

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 150F Primary High-Li...

$8.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMS81405DNBA — 20162903?

Yes. This is the factory-specified OEM limit switch for the Goodman AMS81405DNBA — 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 AMS81405DNBA — 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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