What are the specs for this Limit Switch?

The correct replacement for Goodman model GCH90704CXAA — 20162906 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 GCH90704CXAA — 20162906.

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 M4 Primary Limit Switch for GCH90704CXAA — 20162906

Name: OEM Goodman M4 Primary Limit Switch for GCH90704CXAA — 20162906
Brand: Goodman
SKU: GOODMAN-9708
Price: 34.95 USD
Availability: InStock

SKU: GOODMAN-9708 Brand: Goodman

$34.95 $45.95

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Genuine Goodman 20162906 M4 Primary Limit Switch

The Goodman 20162906 M4 primary limit switch is a factory-original high-limit safety control for the GCH90704CXAA gas furnace. This normally-closed thermal switch monitors heat-exchanger temperature and opens the circuit to shut down the burners if the furnace overheats—protecting against a failed blower, blocked airflow, or dirty filter. A failed or nuisance-tripping limit switch is a frequent cause of no-heat and short-cycling complaints.

Specifications

OEM Part Number: 20162906
Type: Primary high-limit switch (M4 series)
Configuration: Normally closed, auto-reset thermal cutout
Function: Overheat safety shutdown of burners
Mounting: Heat-exchanger / vestibule panel
Primary fit: Goodman GCH90704CXAA

OEM vs. Generic

The OEM Goodman limit switch is calibrated to the exact trip temperature Goodman specified for this furnace and heat exchanger. Because this is a safety device, a generic switch with a different cutout temperature can allow overheating or cause false trips. OEM is strongly recommended for any limit control.

Installation Difficulty

Moderate (3/5). Disconnect power, remove the two mounting screws, transfer the wire leads, and mount the new switch. A multimeter is helpful to confirm continuity. Match the temperature rating and terminal orientation exactly—professional installation is advised for safety controls.

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 M4 Primary Limit Swi...

$34.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman GCH90704CXAA — 20162906?

Yes. This is the factory-specified OEM limit switch for the Goodman GCH90704CXAA — 20162906. 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 GCH90704CXAA — 20162906?

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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