What are the specs for this Limit Switch?

The correct replacement for Goodman model AMH80603ANAA Furnace — 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 AMH80603ANAA Furnace — 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 AMH80603ANAA Furnace — 20162906

Name: OEM Goodman M4 Primary Limit Switch for AMH80603ANAA Furnace — 20162906
Brand: Goodman
SKU: GOODMAN-5076
Price: 18.95 USD
Availability: InStock

SKU: GOODMAN-5076 Brand: Goodman

$18.95 $24.95

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Goodman 20162906 M4 Primary Limit Switch

The Goodman 20162906 is a genuine OEM primary high-limit switch built for the Amana/Goodman AMH80603ANAA gas furnace. Mounted on the heat exchanger bulkhead, this safety control continuously monitors supply-air temperature and opens the ignition circuit if the furnace overheats — protecting the heat exchanger and preventing a fire hazard from restricted airflow, a failed blower, or a dirty filter. It is an auto-reset (M4-series) bimetal disc switch calibrated to the furnace's factory trip point.

Specifications

Part number: 20162906
Type: M4 primary high-limit, auto-reset
Function: Overheat / high-temperature safety cutout
Fits: Amana/Goodman AMH80603ANAA and compatible models
Mounting: Bracket / heat exchanger panel

OEM vs. Generic

This OEM Goodman switch is factory-calibrated to the precise open/close temperature the furnace was designed around. Generic limit switches may carry a different trip temperature, which can cause nuisance short-cycling or, worse, fail to protect the unit. For a safety device, matching the OEM calibration matters.

Installation

Difficulty: Easy to moderate. Cut power, remove two mounting screws and the wire harness, and swap. Note wire orientation before disconnecting. A technician should verify the airflow issue that caused the original trip.

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...

$18.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMH80603ANAA Furnace — 20162906?

Yes. This is the factory-specified OEM limit switch for the Goodman AMH80603ANAA Furnace — 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 AMH80603ANAA Furnace — 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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