When you're shopping for furnaces boilers heating systems, the biggest fork in the road is often efficiency versus upfront price. Two Goodman gas furnaces with the same 60,000 BTU input, single-stage operation, and 1200 CFM ECM blower sit at different ends of that trade-off: the GM9S960603BN at 96% AFUE and the GM9S800603AN at 80% AFUE. The higher-efficiency model lists at $1,394.10, while the 80% unit lists at $799.99. Here's what that price spread actually buys you and which model makes sense for your situation.
Quick verdict
If your priority is lower operating cost and you expect to run the furnace for many heating seasons, the 96% AFUE model is the stronger pick despite its higher listed price. If you need a dependable 60K BTU gas furnace now and want to keep the purchase price down, the 80% AFUE model is the more affordable entry point. Both are Goodman models, both are listed as new, and both share the same blower and staging.
Comparison snapshot
| Product | Listed price | Price bar | AFUE | Stage | Blower |
|---|---|---|---|---|---|
| Goodman GM9S960603BN | USD 1,394.10 | 96% | 1 | 1200 CFM ECM | |
| Goodman GM9S800603AN | USD 799.99 | 80% | 1 | 1200 CFM ECM |
Where each product wins
The 96% AFUE model wins on efficiency. The GM9S960603BN converts a higher share of its fuel into heat, which generally means less energy wasted for the same 60K BTU output. If your heating bill is a big monthly line item and you'll stay with this furnace for a long time, the higher efficiency can make the higher listed price worthwhile over the life of the unit.
The 80% AFUE model wins on price. The GM9S800603AN lists at $799.99, which is $594.11 below the 96% model. If your budget is a deciding factor or the furnace won't see heavy year-round use, the lower listed price makes it the easier choice to justify. You still get the same 60,000 BTU input, single-stage operation, and 1200 CFM ECM blower.
Product notes
Goodman GM9S960603BN - 96% AFUE

This is the higher-efficiency choice in this head-to-head. The 96% AFUE rating means a smaller share of fuel energy goes to waste compared with an 80% model, while retaining the same 60K BTU input and 1200 CFM ECM blower. Its listed price is USD 1,394.10, which is $594.11 more than the 80% model. If you prioritize efficiency and plan to run the furnace for years, this is the one to pick. The main trade-off is the higher upfront price-there's no way around that when you're looking at the two listings side by side.
Goodman GM9S800603AN - 80% AFUE

This furnace brings the same 60K BTU capacity, single-stage operation, and 1200 CFM ECM blower as its 96% AFUE sibling, but at a listed price of USD 799.99. That makes it the lower-priced option in this comparison, with a $594.11 difference from the 96% model. The 80% AFUE rating is a more conventional efficiency level, so if your main goal is to get a Goodman gas furnace with a moderate price tag, this listing deserves a close look. The trade-off is the efficiency gap: you're trading the higher AFUE of the other model for a lower initial purchase price.
Final choice by use case
If you want maximum efficiency from these two 60K BTU furnaces and are comfortable with the $1,394.10 price, choose the GM9S960603BN. If you want a Goodman 60K BTU gas furnace at $799.99 and can accept 80% AFUE, the GM9S800603AN is the pragmatic pick.