What are the specs for this Limit Switch?

The correct replacement for Goodman model DMS80704BNA — B1370145 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 — B1370145.

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 300°F Rollout Limit Switch for DMS80704BNA — B1370145

Name: OEM Goodman 300°F Rollout Limit Switch for DMS80704BNA — B1370145
Brand: Goodman
SKU: GOODMAN-9588
Price: 4.95 USD
Availability: InStock

SKU: GOODMAN-9588 Brand: Goodman

$4.95 $6.49

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Goodman B1370145 Flame Rollout Limit Switch (300°F)

The Goodman B1370145 is a genuine OEM flame rollout limit switch rated to open at 300°F, built for the Goodman DMS80704BNA furnace and compatible models. Mounted on the burner box, this safety switch senses flame rollout — flames escaping the burner area due to a blocked heat exchanger, cracked exchanger, or venting failure. When it detects excessive heat, it cuts power to the gas valve and shuts the furnace down, protecting your home from unsafe combustion conditions.

Specifications

Part number: B1370145
Type: Flame rollout limit switch
Trip temperature: 300°F (opens on rise)
Reset: Manual reset
Fits: Goodman DMS80704BNA and related furnaces
Function: Combustion safety / high-limit rollout protection

OEM vs. Generic

The OEM B1370145 is calibrated to the exact 300°F trip point Goodman's engineering specifies for this burner box. Because this is a life-safety device, an incorrectly rated generic switch could trip too late (unsafe) or nuisance-trip too early. Always match the OEM temperature rating — never bypass a tripped rollout switch.

Installation Difficulty

Rating: Easy (2/5). Shut off gas and power, disconnect the two spade terminals, remove the mounting screws, and install the new switch. A 15–20 minute job. Important: if the switch had tripped, diagnose and correct the root cause (blocked exchanger, bad inducer, venting issue) before returning the furnace to service.

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 300°F Rollout Limit ...

$4.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman DMS80704BNA — B1370145?

Yes. This is the factory-specified OEM limit switch for the Goodman DMS80704BNA — B1370145. 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 — B1370145?

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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