What are the specs for this Door Switch?

The correct replacement for Goodman model GUP040-2 — 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 GUP040-2 — 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 Interlock Switch for GUP040-2 — B1370819

Name: OEM Goodman Door Interlock Switch for GUP040-2 — B1370819
Brand: Goodman
SKU: GOODMAN-13187
Price: 22.95 USD
Availability: InStock

SKU: GOODMAN-13187 Brand: Goodman

$22.95 $29.95

OEM Guaranteed

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30-Day Returns

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Texas CMBL #19328542014

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Govt POs Accepted

The Goodman B1370819 Door Switch is a genuine OEM blower-compartment safety interlock for the Goodman GUP040-2 gas furnace. This plunger-style switch cuts power to the furnace whenever the blower access panel is removed, protecting technicians and homeowners from live electrical and spinning-blower hazards. A stuck, broken, or missing door switch is a frequent cause of a furnace that appears completely dead when the panel is off.

Specifications

Part Number: B1370819
Type: Normally-open plunger interlock switch
Function: Disables furnace when blower door is removed
Fits: Goodman/Amana GUP040-2 furnace
Mounting: Bracket-mount, spade terminal connections

OEM vs. Generic

The OEM B1370819 matches the factory plunger travel and bracket geometry, so the panel actuates it fully when closed. Generic interlocks often have a different plunger length or footprint, forcing you to bend brackets — which can leave the furnace running with the door off (a safety defeat) or refusing to start when closed. Choose OEM for correct, safe actuation.

Installation Difficulty: Easy

Simple swap: kill power at the disconnect, unplug the spade terminals, remove the mounting screw(s), and install the new switch so the panel depresses the plunger fully. About 10–15 minutes with a nut driver. Verify the furnace powers down when the panel is pulled.

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 Interlock Switc...

$22.95

Frequently Asked Questions

Does this Door Switch fit my Goodman GUP040-2 — B1370819?

Yes. This is the factory-specified OEM door switch for the Goodman GUP040-2 — 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 GUP040-2 — 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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