What are the specs for this Door Switch?

The correct replacement for Goodman model GDT070-3B — B1370819 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 GDT070-3B — B1370819.

What symptoms indicate I need a new door switch?

Common symptoms that indicate you need a new door 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 door 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 Door Switch for GDT070-3B — B1370819

Name: OEM Goodman Door Switch for GDT070-3B — B1370819
Brand: Goodman
SKU: GOODMAN-10440
Price: 22.95 USD
Availability: InStock

SKU: GOODMAN-10440 Brand: Goodman

$22.95 $29.95

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Goodman B1370819 Blower Door Safety Switch

The B1370819 is a genuine OEM blower door interlock switch engineered for Goodman GDT070-3B gas furnaces and compatible Goodman/Amana models. This normally-open safety switch cuts power to the blower and control circuit whenever the blower access panel is removed, preventing the furnace from operating with the door open. A failed or stuck switch is a common cause of a furnace that won't start or cycles only when the panel is pressed by hand.

Specifications

Type: Blower door interlock / safety cutoff switch
Action: Normally open, closes when door is installed
Fits: Goodman GDT070-3B and select Goodman/Amana gas furnaces
OEM Part Number: B1370819
Material: Molded housing with plunger actuator and spade terminals

OEM vs. Generic

The genuine OEM B1370819 guarantees correct plunger travel, terminal spacing, and contact rating for your GDT070-3B. Aftermarket door switches often sit at the wrong depth, leaving the circuit intermittently open. For a safety-critical interlock, we recommend the OEM part for reliable, code-compliant operation.

Installation Difficulty

Easy (1/5). Shut off power at the breaker, remove the two spade connectors, snap out the old switch, and press the new one into the bracket. Typical replacement time is under 15 minutes with basic hand tools. Verify blower operation with the door installed before restoring 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 Door Switch for GDT0...

$22.95

Frequently Asked Questions

Does this Door Switch fit my Goodman GDT070-3B — B1370819?

Yes. This is the factory-specified OEM door switch for the Goodman GDT070-3B — B1370819. 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 door switch on my Goodman GDT070-3B — B1370819?

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 door switch?

Common symptoms: unusual noises, intermittent operation, complete failure, or visible damage. Visit our diagnostic hub for symptom-based troubleshooting.

Is this door 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 door 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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