What are the specs for this Limit Switch?

The correct replacement for Goodman model AMH80804BNBB — 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 AMH80804BNBB — 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 AMH80804BNBB — 20162904

Name: OEM Goodman Primary Limit Temperature Control for AMH80804BNBB — 20162904
Brand: Goodman
SKU: GOODMAN-5529
Price: 69.95 USD
Availability: InStock

SKU: GOODMAN-5529 Brand: Goodman

$69.95 $89.95

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Overview

The Goodman 20162904 is a genuine OEM primary limit temperature control engineered as a direct-fit replacement for the Goodman/Amana AMH80804BNBB 80% AFUE gas furnace. Mounted on the heat-exchanger/blower partition, this auto-reset high-limit senses supply-air temperature and interrupts the gas valve if airflow is lost or the furnace overheats — protecting the heat exchanger from cracking. A failed primary limit is a frequent cause of short-cycling and no-heat calls.

Specifications

Type: Primary high-limit temperature control (auto-reset)
Function: Shuts off heating on overheat / loss of airflow
Action: Bimetal snap-disc, model-specific trip temperature
Equipment: Gas furnace (80% AFUE class)
OEM part number: 20162904
Fits model: AMH80804BNBB

OEM vs. Generic

The OEM 20162904 is matched to the precise trip and reset temperatures Goodman engineered for this furnace's heat exchanger and blower table. Because trip point varies by furnace, a generic limit with an incorrect set-point can cause nuisance short-cycling or, worse, fail to protect against a real overheat. For this critical safety control, the OEM part is the correct and code-appropriate choice.

Installation Difficulty

Easy–Moderate (2/5). Disconnect power, transfer the two wire leads, remove the mounting screws, and install the replacement in the identical location and orientation so the sensing element sits in the airstream. Basic hand tools and a nut driver required. Typical time: 15–25 minutes.

Never bypass a limit control. Shut off power and gas before servicing; if the furnace continues to trip, have a licensed HVAC technician inspect airflow and the heat exchanger.

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...

$69.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMH80804BNBB — 20162904?

Yes. This is the factory-specified OEM limit switch for the Goodman AMH80804BNBB — 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 AMH80804BNBB — 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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