What are the specs for this Limit Switch?

The correct replacement for Goodman model AMH80704BNAB — B1370188 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 AMH80704BNAB — B1370188.

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 170°F Primary Limit Switch for AMH80704BNAB — B1370188

Name: OEM Goodman 170°F Primary Limit Switch for AMH80704BNAB — B1370188
Brand: Goodman
SKU: GOODMAN-5360
Price: 29.95 USD
Availability: InStock

SKU: GOODMAN-5360 Brand: Goodman

$29.95 $39.95

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Goodman B1370188 Primary Limit Switch (170°F)

The Goodman B1370188 is a genuine OEM primary high-limit switch engineered for the Amana AMH80704BNAB 80% AFUE gas furnace and compatible Goodman/Amana models. This normally-closed thermal safety control opens the gas valve circuit if heat-exchanger temperatures exceed its 170°F trip point, protecting the furnace from overheating caused by restricted airflow, a dirty filter, or a failed blower. If your furnace short-cycles on high limit or the gas valve won't energize, a failed limit switch is a common cause.

Specifications

Trip temperature: 170°F (auto-reset)
Function: Primary high-limit / temperature safety switch
Contacts: Normally closed (opens on temperature rise)
Mounting: OEM flange-mount to heat exchanger / vestibule panel
Fits: Amana AMH80704BNAB and compatible Goodman 80% furnaces

OEM vs. Generic

The genuine OEM B1370188 is factory-calibrated to the exact 170°F setpoint specified for your furnace, ensuring correct safety timing and preventing nuisance lockouts. Aftermarket generic limit switches may use a nearby setpoint or looser tolerance, which can lead to premature tripping or delayed shutdown. For a safety-critical control, matching the OEM setpoint is strongly recommended.

Installation Difficulty: Easy

Rated Easy (2/5). Shut off power and gas, remove the two mounting screws, transfer the spade wire connectors, and install the replacement in the same orientation. Typical replacement takes 10–15 minutes with basic hand tools. Always de-energize the furnace before servicing.

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 170°F Primary Limit ...

$29.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMH80704BNAB — B1370188?

Yes. This is the factory-specified OEM limit switch for the Goodman AMH80704BNAB — B1370188. 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 AMH80704BNAB — B1370188?

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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