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Goodman

OEM Goodman Primary Limit Temperature Control for AMS80603AXAB — 20162904

SKU: GOODMAN-20162904 Brand: Goodman
$44.95 $58.95

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

The Goodman 20162904 Primary Limit Temperature Control is a genuine OEM high-limit safety switch for AMS80603AXAB gas furnaces and compatible Goodman/Amana models. Mounted on the heat exchanger bulkhead, it continuously monitors supply-air temperature and opens the circuit to the gas valve if the plenum overheats — the classic result of a dirty filter, blocked ducts, or a failed blower. This protects the heat exchanger from cracking and prevents a dangerous overheat condition.

  • Type: Primary (high) limit control, auto-reset
  • Function: Opens on excessive supply-air temperature
  • Factory-calibrated trip and reset temperatures
  • Fits: AMS80603AXAB and compatible Goodman/Amana 80% furnaces
  • Genuine OEM replacement part

OEM vs. Generic: The primary limit is a critical life-safety device tuned to this furnace's specific temperature rise profile. The OEM 20162904 carries the exact trip setpoint, disc size, and mounting bracket Goodman specified. Universal limits often require guesswork on setpoint and can trip early or, worse, too late. We strongly recommend OEM for this control.

Install difficulty: Easy (2/5). Disconnect power, remove the two mounting screws and spade connectors, and install the replacement in the same orientation. Always correct any airflow restriction that caused the trip before restoring heat.

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

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMS80603AXAB — 20162904?
Yes. This is the factory-specified OEM limit switch for the Goodman AMS80603AXAB — 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 AMS80603AXAB — 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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Mike Rivera
HVAC Parts Specialist — Online