Choosing between furnaces for a heating system is not simply a matter of picking the lower-priced model. The important split here is configuration: the Goodman GM9S800804BN carries the larger BTU and airflow designation, while the Goodman GM9S800603AN is the smaller configuration. Both are Goodman 80% AFUE, one-stage ECM gas furnaces, so the decision comes down to matching the furnace designation to the project requirements.
Quick verdict
Choose the Goodman GM9S800804BN when the higher-capacity, higher-airflow configuration is the requirement and its additional stated configuration details matter to the selection. Choose the Goodman GM9S800603AN when the 60K BTU and 1200 CFM designation is the appropriate match. The listed-price spread is $249.01, with the GM9S800603AN at the lower end.
At-a-glance comparison
| Model | Listed price | BTU designation | Airflow designation | Shared format |
|---|---|---|---|---|
| Goodman GM9S800804BN | USD 1,049.00 | 80K BTU | 1600 CFM | 80% AFUE, 1-stage, ECM |
| Goodman GM9S800603AN | USD 799.99 | 60K BTU | 1200 CFM | 80% AFUE, 1-stage, ECM |
Where each Goodman furnace wins
Goodman GM9S800804BN: This model stands out for shoppers whose specifications call for its stated nine-speed setup. It is also identified as an upflow/horizontal unit, with a top vent and a 17-1/2-inch-wide cabinet. Those details give the 804BN a more specific configuration profile beyond the BTU and CFM figures in its title.
Goodman GM9S800603AN: This model is the fit for a heating-system requirement centered on the GM9S800603AN designation. It is identified with Country of Origin as the United States, a concrete attribute for shoppers who want that detail included in their comparison.
Product notes
Goodman GM9S800804BN
The Goodman GM9S800804BN is the stronger pick when your furnace specification calls for the 804BN model and its stated nine-speed ECM motor arrangement. Its configuration also includes upflow/horizontal positioning, a top vent, and a 17-1/2-inch cabinet width, making it a focused option for matching against a defined equipment specification. The title identifies this as the 80K BTU, 1600 CFM member of the pair, and the product details name a 64,000 BTU/hr output. Its limitation within this head-to-head is price: at USD 1,049.00, it is the higher-priced choice. Select it because its named configuration is required, not merely because it is the larger of the two models.
Goodman GM9S800603AN
The Goodman GM9S800603AN gives shoppers a lower listed-price entry point at USD 799.99 while retaining the shared Goodman 80% AFUE, one-stage ECM format. It is a sensible selection when the GM9S800603AN model designation matches the heating-system plan, and its United States country-of-origin attribute is relevant to the purchase decision. The key limitation is configuration scope relative to the other furnace: its title specifies 60K BTU and 1200 CFM rather than the 80K BTU and 1600 CFM designation of the GM9S800804BN. That makes model matching essential; choose this furnace for the stated 603AN configuration rather than treating it as an interchangeable substitute.
Final choice by use case
Pick the Goodman GM9S800804BN for a project that calls for the 804BN configuration and its stated nine-speed, upflow/horizontal details. Pick the Goodman GM9S800603AN for a project specified around the 603AN model. If either configuration meets the heating-system requirements, the GM9S800603AN is the lower-listed-price option.
