What are the specs for this Cap?

The correct replacement for Goodman model AMVC961205DNBA — A1781105 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 AMVC961205DNBA — A1781105.

What symptoms indicate I need a new cap?

Common symptoms that indicate you need a new cap include unusual noises, intermittent operation, complete failure to operate, or visible damage. For specific diagnostic guidance, visit nationalhvacparts.com/pages/hvac-diagnostic.

Is this cap 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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OEM Goodman 1-Piece Vinyl Caps for AMVC961205DNBA — A1781105

Name: OEM Goodman 1-Piece Vinyl Caps for AMVC961205DNBA — A1781105
Brand: Goodman
SKU: GOODMAN-9142
Price: 1.95 USD
Availability: InStock

SKU: GOODMAN-9142 Brand: Goodman

$1.95 $2.59

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The Goodman A1781105 1-Piece Vinyl Cap is a genuine OEM plug/cap used on the AMVC961205DNBA gas furnace and compatible Goodman/Amana models. These caps seal unused ports, drain openings, and knockouts to keep the cabinet air-tight and prevent air leakage, debris intrusion, and condensate escape. Though small, a missing cap can throw off the sealed-combustion pressure balance the furnace relies on for proper operation.

Part number: A1781105
Type: One-piece vinyl cap / port seal
Fits: AMVC961205DNBA and related Goodman/Amana furnaces
Function: Seals unused ports and openings; blocks air and debris
Material: Flexible, durable vinyl with a snug press fit

OEM vs. Generic: Generic caps rarely match the exact port diameter and can pop out under pressure or leave gaps. This OEM cap is molded to the factory opening for a tight, lasting seal — important on a sealed-combustion condensing furnace.

Installation difficulty: Very easy (DIY-friendly). No tools required — simply press the cap firmly into the correct opening until fully seated. Confirm it's flush and secure so the cabinet stays sealed.

Genuine Goodman OEM quality. Inexpensive to keep as a spare. For fitment questions, contact info@nationalhvacparts.com.

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 1-Piece Vinyl Caps f...

$1.95

Frequently Asked Questions

Does this Cap fit my Goodman AMVC961205DNBA — A1781105?

Yes. This is the factory-specified OEM cap for the Goodman AMVC961205DNBA — A1781105. 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 cap on my Goodman AMVC961205DNBA — A1781105?

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 cap?

Common symptoms: unusual noises, intermittent operation, complete failure, or visible damage. Visit our diagnostic hub for symptom-based troubleshooting.

Is this cap 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 cap?

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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OEM Goodman 1-Piece Vinyl Caps for AMVC961205DNBA — A1781105

Shipping Information

Return Policy

Frequently Asked Questions