What are the specs for this Limit Switch?

The correct replacement for Goodman model WGFM195045S3BAB — 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 WGFM195045S3BAB — 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 Control for WGFM195045S3BAB — 20162904

Name: OEM Goodman Primary Limit Control for WGFM195045S3BAB — 20162904
Brand: Goodman
SKU: GOODMAN-14280
Price: 35.95 USD
Availability: InStock

SKU: GOODMAN-14280 Brand: Goodman

$35.95 $46.95

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Goodman 20162904 Primary Limit Temperature Control

The Goodman 20162904 is a genuine OEM primary high-limit temperature control engineered for the WGFM195045S3BAB gas furnace and compatible Goodman/Amana platforms. This safety-critical component continuously monitors heat-exchanger and plenum temperatures, opening the circuit to shut down the burners if the furnace overheats due to restricted airflow, a dirty filter, or blower failure. Installing the factory-spec limit protects your heat exchanger and keeps the furnace operating within UL-listed safety parameters.

Specifications

OEM Part Number: 20162904
Function: Primary high-limit temperature safety cutout
Type: Auto-reset bimetallic snap-disc control
Compatibility: Goodman WGFM195045S3BAB and select Goodman/Amana furnaces
Category: Limit Switch / Temperature Control

OEM vs. Generic

The genuine OEM 20162904 is calibrated to the exact trip and reset temperatures specified by Goodman, ensuring correct furnace lockout behavior and full compatibility with the control board. Generic aftermarket limits may use approximate temperature ratings that can cause nuisance trips or fail to protect the heat exchanger. For a safety device, OEM is strongly recommended.

Installation Difficulty

Moderate — Requires disconnecting power, removing the burner-compartment door, and swapping the mounting screws and wiring terminals. Most experienced DIYers complete this in 20–30 minutes; if you are unsure, contact a licensed HVAC technician.

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 Contro...

$35.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman WGFM195045S3BAB — 20162904?

Yes. This is the factory-specified OEM limit switch for the Goodman WGFM195045S3BAB — 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 WGFM195045S3BAB — 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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