What are the specs for this Limit Switch?

The correct replacement for Goodman model AMES800805CXAA — 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 AMES800805CXAA — 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 AMES800805CXAA — 20162903

Name: OEM Goodman 150°F Primary Limit Switch for AMES800805CXAA — 20162903
Brand: Goodman
SKU: GOODMAN-4670
Price: 18.95 USD
Availability: InStock

SKU: GOODMAN-4670 Brand: Goodman

$18.95 $24.95

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Goodman 20162903 Primary Limit Switch (150°F)

This genuine OEM Goodman primary limit switch (part #20162903) is the factory high-limit safety control for the AMES800805CXAA gas furnace and compatible Goodman/Amana models. Mounted on the heat exchanger, it opens the ignition/gas circuit if plenum temperature exceeds the 150°F trip point, protecting the furnace and your home from overheating caused by restricted airflow, a dirty filter, or a failed blower.

Specifications

OEM Part Number: 20162903
Trip Temperature: 150°F (auto-reset)
Function: Primary high-limit safety switch
Compatibility: Goodman/Amana AMES800805CXAA and related furnaces
Type: Bi-metallic disc, normally closed

OEM vs. Generic

The genuine OEM switch is calibrated to the exact factory trip point and mounting footprint, ensuring reliable safety cutout and correct furnace cycling. Generic universal limits may require bracket modification and can trip early or late, causing nuisance lockouts or unsafe operation. For a critical safety component, OEM is strongly recommended.

Install Difficulty

Easy (2/5). Two mounting screws and two spade terminals. Always shut off power and gas before servicing. Basic DIY skill required — no special tools.

Backed by genuine OEM quality and fast shipping from National HVAC Parts.

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 ...

$18.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMES800805CXAA — 20162903?

Yes. This is the factory-specified OEM limit switch for the Goodman AMES800805CXAA — 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 AMES800805CXAA — 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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