What are the specs for this Door Switch?

The correct replacement for Goodman model OEM Goodman Blower Door Safety Switch w/ Wires — 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 OEM Goodman Blower Door Safety Switch w/ Wires — 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 Blower Door Safety Switch w/ Wires — B1370820

Name: OEM Goodman Blower Door Safety Switch w/ Wires — B1370820
Brand: Goodman
SKU: GOODMAN-9579
Price: 40.95 USD
Availability: InStock

SKU: GOODMAN-9579 Brand: Goodman

$40.95 $53.95

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Goodman B1370820 Blower Door Safety Switch (with Wires)

The Goodman B1370820 is a genuine OEM blower-door interlock switch, supplied pre-wired with leads, for the DMS80703ANA gas furnace and compatible Goodman/Amana models. This spring-plunger safety switch mounts inside the blower compartment and de-energizes the furnace whenever the blower access door is removed. It is a code-required safeguard that prevents the burners and blower from running with the door open, protecting technicians from moving parts and stopping combustion-air problems during service.

Specifications

Type: normally-open plunger interlock switch
Supplied with: factory wire leads (pre-wired)
Function: blower-door safety cutoff / interlock
Action: circuit opens when door is removed
Fits: Goodman DMS80703ANA and select 80% AFUE furnaces
OEM part number: B1370820

OEM vs. Generic

The genuine Goodman assembly arrives with the correct plunger travel, bracket, and pre-attached harness so it lands in the factory location and mates to the furnace wiring without splicing guesswork. Generic door switches often need custom brackets or wire adapting, and a poorly positioned plunger can leave the furnace dead or defeat the safety entirely. OEM saves time and keeps the interlock code-compliant.

Install Difficulty: Easy (2/5)

Disconnect power, remove the old switch bracket screws, unplug or splice the two leads, mount the new switch so the plunger is depressed when the door is on, and reconnect. Ten to fifteen minutes. Verify the furnace powers off when the door 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 Blower Door Safety S...

$40.95

Frequently Asked Questions

Does this Door Switch fit my Goodman OEM Goodman Blower Door Safety Switch w/ Wires — B1370820?

Yes. This is the factory-specified OEM door switch for the Goodman OEM Goodman Blower Door Safety Switch w/ Wires — 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 OEM Goodman Blower Door Safety Switch w/ Wires — 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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