Goodman · Gas Furnace
Goodman GM9C800804BN
Goodman 80% Gas Furnace and AC System Multi Speed ECM Two Stage GM9C800804BN
Where it's listed
| Retailer | Listed price | |
|---|---|---|
| HVACDirect | $1,372 | View → |
Prices are public listings captured from HVAC e-commerce sources; some retailers gate the final price in cart (manufacturer minimum-advertised-price). Always confirm on the retailer's site. Links are affiliate-eligible.
Efficiency & refrigerant
Refrigerant type was not published for this listing. Note the 2025 transition: new residential systems must now use low-GWP refrigerant (R-454B or R-32) under the EPA AIM Act, while existing R-410A units remain serviceable.
Rebates & tax credits
Federal 25C tax credit (now expired for new installs). A qualifying natural-gas, propane, or oil furnace may have qualified for the federal 25C credit (up to $600) if it met the CEE highest-efficiency tier — within the $1,200 combined annual cap. Important: the federal 25C credit applied only to property placed in service on or before December 31, 2025 — under the One Big Beautiful Bill (Pub. L. 119-21), it does not apply to systems installed after that date. If you installed a qualifying system in 2023–2025, you may still be able to claim it on that year's return — and 2025 claims require the manufacturer's qualified-manufacturer (QM) code. Read the federal credit details at ENERGY STAR / IRS →
This is not tax advice. We do not know this exact model's certified efficiency rating, so we cannot say it qualifies for any specific amount. Eligibility depends on the installed system's AHRI-matched rating, your tax liability, and the home being your residence. Always confirm with your installer and a tax advisor.
Official documents
Find the manufacturer's submittal sheet, installation manual, owner's manual, and warranty for the Goodman GM9C800804BN:
Search Goodman literature for GM9C800804BN →
Documents are hosted by the manufacturer — BuyerBloc links to the official source and never re-hosts copyrighted manuals.
Matched systems (AHRI)
For ducted split systems, the rated efficiency only holds for AHRI-certified matched combinations of outdoor unit, coil, and air handler. Look up certified matches for this model in the official directory:
Find AHRI-certified matches for GM9C800804BN →
A retailer "system bundle" is not proof of an AHRI reference number. Verify the match in the AHRI Directory.
Before you buy or install
Furnace sizing follows a Manual J heat-loss calculation, not square-footage rules of thumb — an oversized furnace short-cycles and stresses the heat exchanger. Confirm fuel type (natural gas vs propane), orientation (upflow/downflow/horizontal), and that the blower matches the rest of the system. Gas furnaces require code-compliant venting, combustion air, and a permitted, professional installation; CO safety makes this not a DIY job.
Maintenance
Replace the air filter every 1–3 months, keep supply and return vents unblocked, and have a technician inspect the heat exchanger, burners, and venting before each heating season for safe combustion.
Goodman GM9C800804BN — questions
How much does the Goodman GM9C800804BN cost?
One retailer currently lists it at $1,372. That's the equipment price only — installation (labor, matched coil or air handler, permits) adds significantly more.
Is that the installed price?
No — this is the equipment (box) price. A full installed gas furnace (matched components, labor, permits) costs significantly more, and that install markup is where quotes vary most.
Does the Goodman GM9C800804BN qualify for a federal tax credit?
The federal 25C credit applied only to systems placed in service on or before December 31, 2025, so it does not apply to new installs after that date. State and utility rebates (via DSIRE) may still apply — confirm eligibility with your installer and a tax advisor.
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