What are the specs for this Limit Switch?

The correct replacement for Goodman model AMEC800603BNAB — 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 AMEC800603BNAB — 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 AMEC800603BNAB — 20162903

Name: OEM Goodman 150°F Primary Limit Switch for AMEC800603BNAB — 20162903
Brand: Goodman
SKU: GOODMAN-3796
Price: 14.95 USD
Availability: InStock

SKU: GOODMAN-3796 Brand: Goodman

$14.95 $19.50

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The Goodman 20162903 Primary Limit Switch is a genuine OEM high-limit safety control rated at 150°F, designed for the AMEC800603BNAB gas furnace and compatible Goodman/Amana models. This temperature-sensing switch monitors the heat exchanger and shuts off the burners if the furnace overheats — a critical safety function that prevents heat-exchanger damage and unsafe conditions. If your furnace short-cycles, trips on limit, or fails to fire, a faulty limit switch is a common cause.

Specifications

Part Number: 20162903
Type: Primary High-Limit Switch (auto-reset)
Trip Temperature: 150°F
Function: Overheat protection / burner shutoff
Fits: AMEC800603BNAB and compatible Goodman/Amana furnaces

OEM vs. Generic

This genuine OEM Goodman switch is calibrated to the exact 150°F trip point specified for your furnace. Generic limit switches may use different trip temperatures or mounting styles, which can cause nuisance trips or inadequate protection. For a safety device, matching the OEM rating matters.

Installation Difficulty

Easy (2/5) — Disconnect power, remove the mounting screws, unplug the two spade terminals, and install the new switch. A basic multimeter helps confirm the fault first. About 15–20 minutes for most DIYers.

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 ...

$14.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMEC800603BNAB — 20162903?

Yes. This is the factory-specified OEM limit switch for the Goodman AMEC800603BNAB — 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 AMEC800603BNAB — 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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