What are the specs for this Door Switch?

The correct replacement for Goodman model GMV81155CXA Furnace — B1370820 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 GMV81155CXA Furnace — B1370820.

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 with Wires for GMV81155CXA Furnace — B1370820

Name: OEM Goodman Door Switch with Wires for GMV81155CXA Furnace — B1370820
Brand: Goodman
SKU: GOODMAN-12670
Price: 40.95 USD
Availability: InStock

SKU: GOODMAN-12670 Brand: Goodman

$40.95 $53.95

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The Goodman B1370820 Blower Door Safety Switch is a genuine OEM replacement for the GMV81155CXA two-stage, variable-speed 80% AFUE furnace and many other Goodman/Amana multi-position models. This normally-open interlock switch cuts power to the blower and ignition circuit whenever the blower compartment door is removed, protecting technicians and homeowners during service. It ships with the factory wire leads pre-attached for a plug-and-play install.

Specifications

Type: Blower-door interlock / safety switch
Contacts: Normally open, momentary plunger actuation
Leads: Pre-wired with quick-connect terminals
Fits: GMV81155CXA and compatible Goodman/Amana furnaces
Part number: B1370820

OEM vs. Generic

This is a true Goodman OEM part built to factory tolerances, ensuring the plunger throw and contact rating exactly match your furnace's control board. Generic aftermarket switches often have a shorter plunger or lower amp rating, which can cause nuisance no-blower faults or premature contact failure. For a critical safety interlock, OEM is the recommended choice.

Installation Difficulty

Rating: Easy (2/5). Turn off power at the disconnect, remove the blower door, unplug the two spade connectors, unscrew the old switch bracket, and reverse. Typical install time is 10–15 minutes with basic hand tools. Always verify power is off 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 Door Switch with Wir...

$40.95

Frequently Asked Questions

Does this Door Switch fit my Goodman GMV81155CXA Furnace — B1370820?

Yes. This is the factory-specified OEM door switch for the Goodman GMV81155CXA Furnace — B1370820. 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 GMV81155CXA Furnace — B1370820?

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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