What are the specs for this Limit Switch?

The correct replacement for Goodman model GDT045-3 — 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 GDT045-3 — 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 GDT045-3 — B1370145

Name: OEM Goodman 300°F Rollout Limit Switch for GDT045-3 — B1370145
Brand: Goodman
SKU: GOODMAN-10390
Price: 14.95 USD
Availability: InStock

SKU: GOODMAN-10390 Brand: Goodman

$14.95 $19.95

OEM Guaranteed

Same-Day Ship

30-Day Returns

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Texas CMBL #19328542014

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The Goodman B1370145 Rollout Limit Switch is a genuine OEM safety control designed for GDT045-3 gas furnaces and compatible Goodman/Amana models. This manual-reset flame rollout switch opens at 300°F to shut off the gas valve if burner flame escapes the combustion chamber — a critical safety function that protects your furnace and home from overheating and combustion hazards.

Specifications

Trip temperature: 300°F (manual reset)
Function: Flame rollout / high-limit safety cutoff
Terminal type: 1/4" quick-connect spade
Mounting: Burner bracket, OEM fit
Fits: Goodman GDT045-3 and compatible Goodman/Amana furnaces

OEM vs. Generic

Our OEM Goodman switch is calibrated to the exact factory trip point and reset behavior your furnace expects. Generic aftermarket switches may vary in trip temperature and terminal geometry, which can cause nuisance lockouts or improper safety response. For a life-safety component like a rollout switch, we strongly recommend genuine OEM.

Installation Difficulty

Easy (1/5) — Two spade terminals and one mounting screw. Always shut off power and gas before servicing. If the original switch tripped, diagnose the root cause (blocked heat exchanger, poor venting, cracked exchanger) before replacing — a rollout trip is a warning, not just a bad part.

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 ...

$14.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman GDT045-3 — B1370145?

Yes. This is the factory-specified OEM limit switch for the Goodman GDT045-3 — 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 GDT045-3 — 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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