What are the specs for this Door Switch?

The correct replacement for Goodman model DMS81155CNA 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 DMS81155CNA 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 DMS81155CNA Furnace — B1370820

Name: OEM Goodman Door Switch with Wires for DMS81155CNA Furnace — B1370820
Brand: Goodman
SKU: GOODMAN-9625
Price: 40.95 USD
Availability: InStock

SKU: GOODMAN-9625 Brand: Goodman

$40.95 $53.95

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Texas CMBL #19328542014

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The Goodman B1370820 Door Switch with Wires is a genuine OEM blower-compartment safety switch engineered for the DMS81155CNA gas furnace and compatible Goodman/Amana models. This interlock switch cuts power to the blower and control circuit whenever the blower access door is removed, protecting technicians and homeowners during service. If your furnace won't start with the door closed, or runs only when the switch is manually held, this is the part to replace.

Specifications

Type: Normally-open blower door interlock / safety switch
Pre-wired with factory wire leads and connectors
Function: Interrupts blower and control power when access door is open
Fit: Goodman DMS81155CNA and compatible Goodman/Amana furnaces
OEM Part Number: B1370820

OEM vs. Generic

This is a genuine OEM Goodman component with the correct wire harness length, connector type, and actuation travel for your furnace. Generic switches often require splicing, may have incorrect throw distance, and can trip intermittently. The OEM part drops in without modification and preserves your equipment's safety certification.

Installation Difficulty

Easy (1 of 5). Most installs take 10–15 minutes with a nut driver and are within reach of a confident DIYer. Always disconnect power at the breaker before servicing. If you are not comfortable working around furnace wiring, consult a licensed HVAC technician.

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 DMS81155CNA Furnace — B1370820?

Yes. This is the factory-specified OEM door switch for the Goodman DMS81155CNA 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 DMS81155CNA 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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