What are the specs for this Limit Switch?

The correct replacement for Goodman model AMS81405DNBB — 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 AMS81405DNBB — 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 AMS81405DNBB — 20162903

Name: OEM Goodman 150°F Primary Limit Switch for AMS81405DNBB — 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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Texas CMBL #19328542014

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The Goodman 20162903 Primary Limit Switch is a genuine OEM high-limit safety control engineered for the Goodman/Amana AMS81405DNBB gas furnace and compatible 80% AFUE models. This normally-closed thermal switch monitors heat-exchanger and plenum temperatures, opening the burner and ignition circuit whenever supply air exceeds its 150°F factory cutout to prevent overheating, cracked heat exchangers, and nuisance shutdowns.

Specifications

OEM Part Number: 20162903
Type: Primary high-limit (auto-reset)
Cutout Temperature: 150°F
Circuit: Normally closed (opens on rise)
Fits: Goodman & Amana AMS81405DNBB furnaces
Application: 80% single-stage/multi-speed gas furnaces

OEM vs. Generic

Choosing the genuine OEM Goodman 20162903 guarantees an exact temperature calibration, bracket footprint, and terminal orientation that drop into your existing wiring harness without modification. Aftermarket "universal" limits often differ in trip point or mounting depth, which can cause premature tripping or improper heat-exchanger protection. For a safety-critical control we recommend the OEM part.

Installation Difficulty: Easy (2/5)

Replacement is a straightforward two-wire swap for a homeowner with basic tools. Shut off power and gas, remove the two mounting screws, transfer the spade connectors, and reinstall. No brazing or refrigerant work required. Always confirm the furnace fault clears and cycles normally after replacement. If you are unsure, consult a licensed HVAC technician.

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 ...

$8.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMS81405DNBB — 20162903?

Yes. This is the factory-specified OEM limit switch for the Goodman AMS81405DNBB — 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 AMS81405DNBB — 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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