What are the specs for this Limit Switch?

The correct replacement for Goodman model AMH80905CNAC — B1370189 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 AMH80905CNAC — B1370189.

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.

IMAGE COMING SOON

Goodman

OEM Goodman 200°F Primary Limit Switch for AMH80905CNAC — B1370189

Name: OEM Goodman 200°F Primary Limit Switch for AMH80905CNAC — B1370189
Brand: Goodman
SKU: GOODMAN-B1370189
Price: 21.95 USD
Availability: InStock

SKU: GOODMAN-B1370189 Brand: Goodman

$21.95 $28.95

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014

SAM.gov Registered

Govt POs Accepted

Goodman B1370189 Primary Limit Switch (200°F)

The Goodman B1370189 is a genuine OEM primary high-limit switch rated at 200°F, built for the AMH80905CNAC and other compatible Goodman/Amana 80% AFUE furnaces. Positioned on the heat exchanger bulkhead in the supply-air stream, this auto-reset limit is the furnace's main overheat protection: if plenum temperatures climb too high due to restricted airflow, it opens to shut off the gas valve while keeping the blower running to purge residual heat. Once the cabinet cools, it resets automatically. A drifted or failed primary limit is a common cause of short-cycling and "limit open" lockouts.

Specifications

Trip temperature: 200°F
Reset type: automatic
Function: primary high-limit overheat protection
Fit: Goodman/Amana AMH80905CNAC and compatible 80% furnaces
OEM part number: B1370189

OEM vs. Generic

Primary limits are matched to each furnace's heat-exchanger geometry and CFM design. The OEM B1370189 delivers the exact 200°F calibration and mounting flange, so the furnace protects and cycles as engineered. Aftermarket limits with a different setpoint risk nuisance trips or delayed shutdown.

Install Difficulty

Moderate. Requires removing two mounting screws on the heat-exchanger panel and transferring spade connectors; note orientation on removal. Estimated time: 20–30 minutes. De-energize power and gas before starting.

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 200°F Primary Limit ...

$21.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMH80905CNAC — B1370189?

Yes. This is the factory-specified OEM limit switch for the Goodman AMH80905CNAC — B1370189. 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 AMH80905CNAC — B1370189?

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.

Menu