What are the specs for this Limit Switch?

The correct replacement for Goodman model AMH80803BNBB — 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 AMH80803BNBB — 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 Switch for AMH80803BNBB — 20162904

Name: OEM Goodman Primary Limit Switch for AMH80803BNBB — 20162904
Brand: Goodman
SKU: GOODMAN-20162904
Price: 35.95 USD
Availability: InStock

SKU: GOODMAN-20162904 Brand: Goodman

$35.95 $47.95

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The Goodman 20162904 Primary Limit Temperature Control is a genuine OEM safety switch engineered for the AMH80803BNBB gas furnace and compatible Goodman/Amana 80% AFUE models. Mounted on the heat exchanger vestibule panel, the primary limit continuously monitors supply-air temperature and opens the gas valve/ignition circuit if the furnace overheats — typically from a dirty filter, blocked ductwork, or a failed blower. A tripping or failed limit is one of the most common causes of intermittent no-heat and short-cycling complaints.

Specifications

Part type: Primary high-limit temperature control (auto-reset snap-disc)
Fits: Goodman / Amana AMH80803BNBB and related 80% AFUE upflow/horizontal furnaces
Function: Opens control circuit on over-temperature, closes on cool-down
Mounting: Factory limit bracket on heat exchanger panel
Type: Direct OEM replacement — no rewiring required

OEM vs. Generic

This is the genuine Goodman OEM part (20162904) with the exact trip and reset set-points calibrated for your furnace's heat exchanger. Generic aftermarket limits often use approximate temperature ratings that can nuisance-trip or, worse, fail to open at the correct threshold — a safety concern. For a temperature-critical safety control we recommend the OEM part.

Installation Difficulty

Moderate — 2 of 5. Requires removing the burner/control panel, disconnecting two spade terminals, and unscrewing the limit bracket. Always shut off gas and 120V power at the disconnect before servicing. If you are not comfortable working near the gas valve and heat exchanger, have a licensed HVAC technician perform the swap.

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 Switch...

$35.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMH80803BNBB — 20162904?

Yes. This is the factory-specified OEM limit switch for the Goodman AMH80803BNBB — 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 AMH80803BNBB — 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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