Description
Product Summary
The Goodman GR9S800804BU is an 80,000 BTU/h input, 80% AFUE single-stage gas furnace from the GR9S80 series with a Multi-Speed ECM (9-Speed) blower. The 17.5-inch cabinet installs upflow or horizontal.
It delivers about 64,000 BTU/h of heat at high fire and supports up to 4 tons of matched cooling airflow. It is a natural gas furnace with 115V single-phase power, ready for R-32 and R-410A cooling coils. The U suffix indicates an ultra-low NOx burner rated 14 ng/J for California air district rules.
Key Features
- 80% AFUE: efficient natural gas heating.
- Multi-Speed ECM (9-Speed): nine selectable speeds to set airflow for heating and cooling.
- Single-Stage gas valve: simple, dependable single-stage operation.
- Upflow/Horizontal installation: flexible placement in basements, closets, crawlspaces and attics.
- 17.5-inch cabinet: matches coils and plenums of the same width.
- Gas conversion ready: Goodman LP and high-altitude kits are available.
- Ultra Low NOx burner: meets 14 ng/J limits.
Specifications
| Brand | Goodman |
|---|---|
| Model | GR9S800804BU |
| Series | GR9S80 |
| Heating Input | 80,000 BTU/h |
| Heating Output (high fire) | 64,000 BTU/h |
| AFUE | 80% |
| Max Cooling Capacity | 4 tons |
| Blower Motor | 3/4 HP Multi-Speed ECM (9-Speed) |
| Gas Valve | Single-Stage |
| Configuration | Upflow/Horizontal |
| Cabinet Width | 17.5 in |
| Nominal Max Airflow Code | 1,600 CFM |
| NOx | Ultra Low NOx (14 ng/J) |
| Venting | 4 in single-wall connector / Category I vent |
| Electrical | 115V, 60 Hz, 1-Phase |
| Fuel | Natural gas (LP conversion kit available) |
Ideal Applications
- Residential furnace replacements
- New construction homes
- Systems paired with R-32 or R-410A air conditioners and heat pumps (dual fuel)
- Light commercial spaces
Frequently Asked Questions
What size coil does it match?
Choose a cased coil with a 17.5-inch matching width; Goodman CHPEA or CAPEA coils are common matches. Verify AHRI combinations.
Can it run on propane?
Yes, with the correct Goodman LP conversion kit installed by a qualified technician.
How much cooling can it support?
The spec sheet lists up to 4 tons of cooling airflow.
What venting does it use?
Category I venting with a 4-inch vent connector.
Is it compliant in California?
U-suffix ultra-low NOx models are built for California air district requirements.
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