What are the specs for this Door Switch?

The correct replacement for Goodman model GSMS080-4 — 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 GSMS080-4 — 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 Furnace Door Interlock Switch for GSMS080-4 — B1370819

Name: OEM Goodman Furnace Door Interlock Switch for GSMS080-4 — B1370819
Brand: Goodman
SKU: GOODMAN-12975
Price: 22.95 USD
Availability: InStock

SKU: GOODMAN-12975 Brand: Goodman

$22.95 $29.95

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Texas CMBL #19328542014

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The Goodman B1370819 Blower Door Interlock Switch is a factory OEM safety component designed for the GSMS080-4 gas furnace. This switch interrupts power to the furnace whenever the blower access panel is removed, protecting the technician and preventing operation with the cabinet open. If your furnace won't power on, a failed or misaligned door switch is one of the most common and least expensive culprits.

Specifications

Part Number: B1370819
Type: Blower door interlock / safety cutoff switch
Fits: Goodman GSMS080-4 furnace
Function: Normally-open plunger switch, opens when door is removed
Brand: Genuine Goodman OEM

OEM vs. Generic

This genuine OEM Goodman switch is guaranteed to match the exact plunger travel, mounting footprint, and electrical rating of the original part — no shimming or bracket modification. Aftermarket generic switches are cheaper but can have inconsistent trip points, leading to nuisance no-heat calls. For a low-cost safety component, OEM is the smart choice.

Install Difficulty

Easy (1/5) — Cut power, remove two mounting screws, transfer the spade connectors, and reinstall. Typically a 10-minute repair with a nut driver. Always disconnect power at the breaker before servicing.

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 Furnace Door Interlo...

$22.95

Frequently Asked Questions

Does this Door Switch fit my Goodman GSMS080-4 — B1370819?

Yes. This is the factory-specified OEM door switch for the Goodman GSMS080-4 — 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 GSMS080-4 — 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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