What are the specs for this Limit Switch?

The correct replacement for Goodman model GMS951155DXA — 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 GMS951155DXA — 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 GMS951155DXA — 20162906

Name: OEM Goodman M4 Primary Limit Switch for GMS951155DXA — 20162906
Brand: Goodman
SKU: GOODMAN-12247
Price: 29.95 USD
Availability: InStock

SKU: GOODMAN-12247 Brand: Goodman

$29.95 $39.95

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Texas CMBL #19328542014

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The Goodman 20162906 M4 Primary Limit Switch is a genuine OEM high-temperature safety control for the GMS951155DXA gas furnace and compatible GMS95-series models. This normally-closed thermal switch monitors heat-exchanger temperature and opens the gas/ignition circuit if the furnace overheats — protecting against a failed blower, restricted airflow, or a dirty filter. A failed or nuisance-tripping limit is a frequent cause of no-heat and short-cycling calls.

Specifications

OEM Part Number: 20162906
Type: M4 primary high-limit switch (auto-reset, normally closed)
Function: Overheat protection / burner lockout
Mounting: Furnace-specific bracket (direct fit)
Fits: Goodman GMS951155DXA and compatible GMS95 furnaces

OEM vs. Generic

The OEM limit switch is calibrated to the exact cut-out and cut-in temperatures specified for this heat exchanger, ensuring the furnace shuts down at the correct threshold. Generic universal limits require verifying trip temperature and bracket geometry, and an incorrect rating can allow unsafe operation or cause false trips. For a safety control, the genuine part is the safest choice.

Installation Difficulty: Easy–Moderate

Rated 2 of 5. Disconnect power, note and unplug the two spade wires, remove the mounting screws, and install the replacement in the same orientation. Restore power and confirm a full heat cycle. Best performed by a qualified HVAC technician.

This is a critical safety component — do not bypass a tripping limit switch. Have the root cause of any overheating diagnosed by a professional.

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...

$29.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman GMS951155DXA — 20162906?

Yes. This is the factory-specified OEM limit switch for the Goodman GMS951155DXA — 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 GMS951155DXA — 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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