What are the specs for this Limit Switch?

The correct replacement for Goodman model WGFM195090S4CAD — 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 WGFM195090S4CAD — 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 WGFM195090S4CAD — 20162904

Name: OEM Goodman Primary Limit Temperature Control for WGFM195090S4CAD — 20162904
Brand: Goodman
SKU: GOODMAN-14364
Price: 54.95 USD
Availability: InStock

SKU: GOODMAN-14364 Brand: Goodman

$54.95 $72.95

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Texas CMBL #19328542014

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The Goodman 20162904 Primary Limit Temperature Control is a genuine OEM high-limit safety switch for the WGFM195090S4CAD gas furnace and compatible Goodman/Amana models. Mounted on the heat exchanger or supply plenum, the primary limit continuously monitors discharge air temperature and shuts off the gas valve if the furnace overheats — the most common cause being restricted airflow from a dirty filter, closed registers, or a failing blower. It is the furnace's front-line protection against heat-exchanger damage and unsafe operating temperatures.

Specifications

Part Type: Primary high-limit temperature control
OEM Part Number: 20162904
Function: Auto-monitor supply air; opens gas circuit on overheat
Mounting: Plenum / heat-exchanger flange (factory-matched set point)
Terminals: Quick-connect spade
Fits: Goodman WGFM195090S4CAD and compatible furnace models
Brand: Goodman (OEM)

OEM vs. Generic

The genuine OEM 20162904 arrives with the correct trip temperature, mounting geometry, and sensing-element length for this furnace — details a universal aftermarket limit cannot guarantee. Since the primary limit is a life-safety device tied directly to the gas valve, matching the OEM set point is essential; an incorrect substitute risks nuisance lockouts or, worse, failing to protect the heat exchanger.

Installation Difficulty

Moderate (3/5) — Disconnect power, note or photograph the wiring, remove the mounting screws, and transfer the spade connectors to the new control, ensuring the sensing element sits in the same position in the airstream. Allow 20–30 minutes. If the limit continues to trip after replacement, the root airflow problem must be resolved by a qualified technician 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...

$54.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman WGFM195090S4CAD — 20162904?

Yes. This is the factory-specified OEM limit switch for the Goodman WGFM195090S4CAD — 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 WGFM195090S4CAD — 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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