What are the specs for this Limit Switch?

The correct replacement for Goodman model GDT070-3A — B1370113 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 GDT070-3A — B1370113.

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 120°F Auxiliary Limit Switch for GDT070-3A — B1370113

Name: OEM Goodman 120°F Auxiliary Limit Switch for GDT070-3A — B1370113
Brand: Goodman
SKU: GOODMAN-B1370113
Price: 14.95 USD
Availability: InStock

SKU: GOODMAN-B1370113 Brand: Goodman

$14.95 $19.95

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The Goodman B1370113 Auxiliary Limit Switch is a genuine OEM overheat-protection component engineered for the Goodman GDT070-3A gas furnace and compatible models in the same platform. This normally-closed thermal switch monitors cabinet and blower-compartment temperatures and opens the control circuit at its rated 120°F trip point, shutting down the burners before a heat-exchanger or airflow fault can damage the appliance. It is a required safety device — a failed or missing auxiliary limit is one of the most common causes of nuisance lockouts and no-heat calls.

Specifications

Part number: B1370113
Trip temperature: 120°F (auto-reset)
Type: Normally-closed thermal limit switch
Brand: Goodman (OEM)
Application: GDT070-3A and compatible Goodman gas furnaces
Function: Auxiliary / blower-compartment overheat protection

OEM vs. Generic

The OEM Goodman B1370113 is calibrated to Goodman's exact 120°F specification and mounting geometry, guaranteeing a plug-and-play fit and correct trip behavior. A quality universal-replacement limit switch can save a few dollars, but you must verify trip temperature and terminal orientation yourself. For safety-critical limit controls we recommend the OEM part.

Installation Difficulty

Easy (1 of 5). Power off the furnace at the disconnect, unplug the two spade terminals, remove the mounting screws, and reverse for the new switch. Most homeowners complete the swap in under 15 minutes with a nut driver. Always confirm continuity at room temperature before reassembly.

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 120°F Auxiliary Limi...

$14.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman GDT070-3A — B1370113?

Yes. This is the factory-specified OEM limit switch for the Goodman GDT070-3A — B1370113. 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 GDT070-3A — B1370113?

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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