What are the specs for this Limit Switch?

The correct replacement for Goodman model AMH950453BXAD — 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 AMH950453BXAD — 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 AMH950453BXAD — 20162904

Name: OEM Goodman Primary Limit Temperature Control for AMH950453BXAD — 20162904
Brand: Goodman
SKU: GOODMAN-6254
Price: 35.95 USD
Availability: InStock

SKU: GOODMAN-6254 Brand: Goodman

$35.95 $46.95

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The Goodman 20162904 Primary Limit Temperature Control is a genuine OEM high-limit safety device that governs supply-air temperature in the AMH950453BXAD gas furnace. Mounted at the heat-exchanger outlet, this primary limit continuously monitors plenum temperature and de-energizes the gas valve if airflow is restricted or the blower fails, preventing dangerous overheating of the heat exchanger. It is one of the most important safety controls in the furnace and a common failure point in no-heat and short-cycling calls.

Specifications

Type: Primary limit temperature control (auto-reset)
Configuration: Normally closed, opens on high supply-air temperature
Mounting: Plenum / heat-exchanger outlet plate
Compatible model: AMH950453BXAD (Goodman/Amana furnace)
Equipment: Gas furnace
OEM part number: 20162904

OEM vs. Generic

The OEM 20162904 arrives pre-calibrated to the furnace's exact trip temperature and probe length — critical for a primary limit, where an incorrect setpoint can cause nuisance lockouts or unsafe operation. A Generic limit may not match the probe insertion depth or trip point, so OEM is strongly recommended for this safety-critical control.

Installation Difficulty

Moderate (2/5) — Requires power disconnect, removal of two mounting screws, transferring the wiring, and confirming the probe seats correctly in the airstream. Recommended for HVAC professionals.

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...

$35.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMH950453BXAD — 20162904?

Yes. This is the factory-specified OEM limit switch for the Goodman AMH950453BXAD — 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 AMH950453BXAD — 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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