American GSP-100 2 30-Gallon
American GSP-100 2 30-Gallon is a gas storage water heater from American with a 33 gallon rated tank and a 170 gallon first-hour rating at a 0.9 UEF.
| Uniform Energy Factor (UEF) | 0.9 |
|---|---|
| Annual gas use (natural gas) | 188 therms/yr |
| Recovery efficiency | 95 % |
| Annual propane use | 205.46 gal/yr |
| Fuel | Natural Gas, Propane |
|---|
| First-hour rating | 170 gal |
|---|---|
| Rated storage volume | 33 gal |
| Draw pattern | High |
| Gas input rate | 100 kBTU/h |
|---|
| Max current draw | 5 A |
|---|---|
| Vent type | Power Direct Vent |
| Vent size | 2 |
| Smart / connected capable | No |
|---|
| Height | 49 in |
|---|---|
| Diameter | 22 in |
| ENERGY STAR certified | Yes |
|---|
Capacity and running cost
- Its 170 gallon first-hour rating suits a household of 5+ people under DOE sizing guidance.
- Rated for a high-usage draw pattern under the DOE test procedure.
- Estimated running cost: about $273/year at national average gas rates.
Compare the American GSP-100 2 30-Gallon
- American GSP-100 2 30-Gallon vs A. O. Smith GC6-PS4050-V 1 40-Gallon
- American GSP-100 2 30-Gallon vs A. O. Smith GC6-PS5065-V 1 50-Gallon
- American GSP-100 2 30-Gallon vs A. O. Smith GPCC-40L 1 40-Gallon
- American GSP-100 2 30-Gallon vs Envirosense Reliance Home Comfort ENV-40N-RHC 1 40-Gallon
- American GSP-100 2 30-Gallon vs Envirosense Reliance Home Comfort ENV-50N-RHC 1 50-Gallon
- American GSP-100 2 30-Gallon vs Friedrich 12PROG 40-50P FD HE EC3 40-Gallon
- American GSP-100 2 30-Gallon vs Friedrich 12PROG 40-50U FD HE EC3 40-Gallon
- American GSP-100 2 30-Gallon vs Friedrich 8PROG 40-50P FD HE EC1 40-Gallon
Similar water heaters
- A. O. Smith GC6-PS4050-V 1 40-Gallon (UEF 0.9)
- A. O. Smith GC6-PS5065-V 1 50-Gallon (UEF 0.9)
- A. O. Smith GPCC-40L 1 40-Gallon (UEF 0.9)
- A. O. Smith GPCT-40L 1 40-Gallon (UEF 0.9)
- A. O. Smith GPCT-40L 1 40-Gallon (GC9-PS4050NV 1) (UEF 0.9)
- A. O. Smith GPCT-40L 1 40-Gallon (HPCT-40L 1) (UEF 0.9)
Frequently asked questions
Is the American GSP-100 2 30-Gallon ENERGY STAR certified?
Yes, the American GSP-100 2 30-Gallon holds a current ENERGY STAR certification for water heating efficiency (UEF 0.9).
How much does the American GSP-100 2 30-Gallon cost to run per year?
About $273 per year at national average energy rates, based on its certified annual energy use under the DOE test draw pattern. Your rate and usage change this figure.
What venting does the American GSP-100 2 30-Gallon use?
The American GSP-100 2 30-Gallon uses Power Direct Vent venting with 2 in vent connections. Matching the existing vent type is usually the cheapest replacement path.
Is the American GSP-100 2 30-Gallon a smart water heater?
No, the American GSP-100 2 30-Gallon is not connected-capable — it has no app connectivity or demand-response support.
Sources
- data.energystar.gov (retrieved 2026-07-17)