What are the specs for this Limit Switch?

The correct replacement for Goodman model AMS81005 — 20162904 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 AMS81005 — 20162904.

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 Primary Limit Temperature Control for AMS81005 — 20162904

Name: OEM Goodman Primary Limit Temperature Control for AMS81005 — 20162904
Brand: Goodman
SKU: GOODMAN-20162904
Price: 44.95 USD
Availability: InStock

SKU: GOODMAN-20162904 Brand: Goodman

$44.95 $58.95

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OEM Goodman 20162904 Primary Limit Temperature Control

The Goodman 20162904 is a genuine OEM primary limit temperature control for the AMS81005CXAA gas furnace and compatible Goodman and Amana models. Mounted on the heat exchanger bulkhead, this high-limit switch continuously senses supply-air temperature. If airflow is lost — from a dirty filter, failed blower, or blocked ductwork — and the plenum overheats, the limit opens the gas valve circuit to shut down the burners, protecting the heat exchanger from thermal damage and preventing an unsafe condition.

Specifications

OEM Part Number: 20162904
Type: Primary high-limit temperature control
Function: Automatic-reset supply-air overheat cutoff
Mounting: Heat exchanger / blower bulkhead bracket
Fits: Goodman AMS81005CXAA and compatible Goodman/Amana furnaces
Terminals: Quick-connect spade

OEM vs. Generic

The primary limit's trip temperature and bracket length are matched to this furnace's cabinet. An OEM 20162904 restores the exact factory set point; a generic universal limit may trip early (nuisance shutdowns) or too late (inadequate protection). For heat exchanger safety and warranty integrity, use the OEM control.

Installation Difficulty

Easy to Moderate (2/5). Held by two screws with two spade connectors; typically a 20-minute repair. Cut power and gas before servicing, and address the root cause of any overheat (airflow restriction) before returning the furnace to service.

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 Primary Limit Temper...

$44.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMS81005 — 20162904?

Yes. This is the factory-specified OEM limit switch for the Goodman AMS81005 — 20162904. 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 AMS81005 — 20162904?

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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