What are the specs for this Heat Exchanger?

The correct replacement for Goodman model GMNTE120-5 — 4821404S 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 GMNTE120-5 — 4821404S.

What symptoms indicate I need a new heat exchanger?

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

Is this heat exchanger 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.

IMAGE COMING SOON

Goodman

OEM Goodman 24-1/2 in 6-Cell Heat Exchanger for GMNTE120-5 — 4821404S

Name: OEM Goodman 24-1/2 in 6-Cell Heat Exchanger for GMNTE120-5 — 4821404S
Brand: Goodman
SKU: GOODMAN-11820
Price: 433.95 USD
Availability: InStock

SKU: GOODMAN-11820 Brand: Goodman

$433.95 $569.95

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014

SAM.gov Registered

Govt POs Accepted

The Goodman 4821404S is a genuine OEM 24-1/2 inch, 6-cell heat exchanger engineered as a direct-fit replacement for the GMNTE120-5 gas furnace. The heat exchanger is the heart of your furnace's combustion system — it transfers heat from the burners to the circulating air while keeping combustion byproducts safely separated from your home's air stream. A cracked or corroded exchanger is a safety issue and a common cause of furnace red-tagging, so a factory-spec replacement matters.

Size: 24-1/2 in overall
Cells: 6-cell clamshell design
Material: Aluminized steel for corrosion resistance
Fits: Goodman GMNTE120-5 furnace
Type: Primary heat exchanger assembly

OEM vs. Generic: This is the true Goodman OEM assembly, dimensionally identical to the factory part with matching cell geometry and mounting points. Generic aftermarket exchangers can vary in tube pitch and flange spacing, leading to combustion issues, poor seals, or premature failure. For a safety-critical component like a heat exchanger, OEM is strongly recommended and often required to keep the furnace warranty intact.

Install difficulty: Hard. Heat exchanger replacement requires disassembly of the burner and blower sections, gas line and manifold removal, and combustion testing on reassembly. This job should be performed by a licensed HVAC technician with a combustion analyzer. Always shut off gas and power 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 24-1/2 in 6-Cell Hea...

$433.95

Frequently Asked Questions

Does this Heat Exchanger fit my Goodman GMNTE120-5 — 4821404S?

Yes. This is the factory-specified OEM heat exchanger for the Goodman GMNTE120-5 — 4821404S. 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 heat exchanger on my Goodman GMNTE120-5 — 4821404S?

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 heat exchanger?

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

Is this heat exchanger 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 heat exchanger?

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.

Menu

OEM Goodman 24-1/2 in 6-Cell Heat Exchanger for GMNTE120-5 — 4821404S

Shipping Information

Return Policy

Frequently Asked Questions