What are the specs for this Cap?

The correct replacement for Goodman model ACSS961205DNAA Furnace — 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 ACSS961205DNAA Furnace — 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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Goodman

OEM Goodman 1-Piece Vinyl Caps for ACSS961205DNAA Furnace — A1781105

Name: OEM Goodman 1-Piece Vinyl Caps for ACSS961205DNAA Furnace — A1781105
Brand: Goodman
SKU: GOODMAN-2437
Price: 6.95 USD
Availability: InStock

SKU: GOODMAN-2437 Brand: Goodman

$6.95 $9.38

OEM Guaranteed

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30-Day Returns

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Texas CMBL #19328542014

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The Goodman A1781105 is a genuine OEM 1-piece vinyl cap used on the ACSS961205DNAA gas furnace. These caps seal unused ports, knockouts, and tube ends, keeping debris, dust, and pests out of the furnace cabinet and maintaining the intended airflow and combustion pathways. Though inexpensive, a missing cap can allow air leaks that affect pressure-switch operation or let contaminants reach sensitive components.

Specifications

OEM Part Number: A1781105
Component: 1-piece vinyl cap / plug
Compatible Model: ACSS961205DNAA (Goodman gas furnace)
Equipment Type: High-efficiency condensing furnace
Material: Flexible vinyl
Function: Seals unused ports and tube ends

OEM vs. Generic

OEM vinyl caps are molded to the exact diameter of the factory ports, providing a snug, secure fit that stays in place through thermal cycling. Generic caps may be loose or too tight, working free over time or splitting during installation. The genuine part guarantees a lasting seal.

Installation Difficulty

Very Easy — A 1-2 minute job requiring no tools. Simply press the cap firmly over the port or tube end until fully seated.

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...

$6.95

Frequently Asked Questions

Does this Cap fit my Goodman ACSS961205DNAA Furnace — A1781105?

Yes. This is the factory-specified OEM cap for the Goodman ACSS961205DNAA Furnace — 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 ACSS961205DNAA Furnace — 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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