What are the specs for this Limit Switch?

The correct replacement for Goodman model GMT140-5BB — B1370198 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 GMT140-5BB — B1370198.

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 150F Primary Limit Switch for GMT140-5BB — B1370198

Name: OEM Goodman 150F Primary Limit Switch for GMT140-5BB — B1370198
Brand: Goodman
SKU: GOODMAN-B1370198
Price: 12.95 USD
Availability: InStock

SKU: GOODMAN-B1370198 Brand: Goodman

$12.95 $16.95

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Goodman B1370198 150°F Primary High-Limit Switch

The B1370198 is a genuine OEM Goodman primary high-limit switch designed for the GMT140-5BB gas furnace and compatible Goodman/Amana models. Positioned on the heat-exchanger side of the cabinet, this control continuously monitors supply-air temperature and opens the circuit at 150°F to shut down the burners if the furnace overheats, preventing heat-exchanger damage and unsafe operation.

Specifications

Trip temperature: 150°F
Function: Primary high-limit / overheat cutout
Type: Normally closed, auto-reset bimetal disc
Fits: Goodman GMT140-5BB and compatible furnaces
OEM Part Number: B1370198

OEM vs. Generic

Because the primary limit is the furnace's first line of overheat defense, calibration accuracy matters. The genuine Goodman B1370198 is factory-set to 150°F with the correct disc size and mounting flange. Generic substitutes may trip early (causing short-cycling and cold-air complaints) or late (risking the heat exchanger). OEM is strongly recommended.

Install Difficulty: Easy

Two spade connectors and a pair of mounting screws. Replacement typically takes 10–15 minutes for a confident DIYer. Always de-energize the furnace at the breaker before servicing and confirm the switch orientation matches the original.

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 150F Primary Limit S...

$12.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman GMT140-5BB — B1370198?

Yes. This is the factory-specified OEM limit switch for the Goodman GMT140-5BB — B1370198. 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 GMT140-5BB — B1370198?

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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