What are the specs for this Door Switch?

The correct replacement for Goodman model GMNT090-5B — 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 GMNT090-5B — 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 GMNT090-5B — B1370820

Name: OEM Goodman Door Switch with Wires for GMNT090-5B — B1370820
Brand: Goodman
SKU: GOODMAN-11710
Price: 40.95 USD
Availability: InStock

SKU: GOODMAN-11710 Brand: Goodman

$40.95 $53.95

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Texas CMBL #19328542014

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The genuine Goodman B1370820 Door Switch with Wires is a factory-original blower-compartment safety switch engineered for the GMNT090-5B gas furnace. This normally-open interlock switch cuts power to the blower and ignition circuit whenever the blower access door is removed, protecting technicians and homeowners from live electrical and moving components. It ships with the pre-attached wire leads and quick-connect terminals for a true plug-and-play replacement.

Specifications

OEM Part Number: B1370820
Type: SPST blower door interlock safety switch
Includes: Factory wire harness with terminals
Fits: Goodman GMNT090-5B gas furnace
Function: De-energizes blower/ignition when door is open
Brand: Goodman (genuine OEM)

OEM vs. Generic

Generic door switches are often close but not exact — mounting-tab spacing, actuator height, and lead length can vary, leading to nuisance lockouts or a switch that fails to seat. This authentic Goodman B1370820 guarantees the correct actuation point and harness routing, so the furnace behaves exactly as the factory intended. For a safety-critical interlock, OEM is the right call.

Installation Difficulty

Easy (1/5). Disconnect furnace power, remove the blower door, unplug the two spade connectors, unscrew the old switch, and reverse the process. Most homeowners complete this in under 15 minutes with a nut driver. If you are uncomfortable working near line-voltage wiring, contact a licensed HVAC technician.

Always shut off electrical power and gas at the source 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 GMNT090-5B — B1370820?

Yes. This is the factory-specified OEM door switch for the Goodman GMNT090-5B — 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 GMNT090-5B — 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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