What are the specs for this Limit Switch?

The correct replacement for Goodman model DMS80704BNA — 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 DMS80704BNA — 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 DMS80704BNA — B1370188

Name: OEM Goodman 170°F Primary Limit Switch for DMS80704BNA — B1370188
Brand: Goodman
SKU: GOODMAN-9590
Price: 12.95 USD
Availability: InStock

SKU: GOODMAN-9590 Brand: Goodman

$12.95 $16.95

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Goodman B1370188 Primary Limit Switch (170°F)

The B1370188 is a genuine OEM Goodman primary high-limit switch engineered for the DMS80704BNA 80% AFUE gas furnace and compatible Goodman/Amana models. This normally-closed thermal safety control opens the heating circuit if the heat exchanger area exceeds its 170°F trip point, protecting your furnace from overheating and preventing dangerous conditions. If your furnace short-cycles, trips on limit, or fails to fire, a worn or drifted limit switch is a common culprit.

Specifications

Trip temperature: 170°F (auto-reset)
Function: Primary high-limit / overheat safety
Configuration: Normally closed (opens on rise)
Mount: Snap-disc, factory bracket fit
Fits: Goodman DMS80704BNA and compatible furnaces
Part number: B1370188

OEM vs. Generic

Our genuine Goodman OEM switch is calibrated to the exact factory trip temperature, ensuring correct cycling and full safety compliance. Aftermarket generics often have wider temperature tolerances that can cause nuisance trips or delayed shut-off. For a safety-critical control, OEM is strongly recommended.

Installation Difficulty

Easy (1/5). A two-wire, single-fastener swap for most DIYers — typically 10–15 minutes. Always shut off power and gas at the furnace before servicing. If you are unsure why the original limit tripped, have a licensed HVAC technician inspect the heat exchanger and blower before replacing.

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 ...

$12.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman DMS80704BNA — B1370188?

Yes. This is the factory-specified OEM limit switch for the Goodman DMS80704BNA — 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 DMS80704BNA — 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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