HTP Phoenix 80-Gallon (PH100-80)
HTP Phoenix 80-Gallon (PH100-80) is a gas storage water heater from HTP with a 75 gallon rated tank and a 132 gallon first-hour rating at a 0.93 UEF.
| Uniform Energy Factor (UEF) | 0.93 |
|---|---|
| Annual gas use (natural gas) | 182 therms/yr |
| Recovery efficiency | 99 % |
| Annual propane use | 198.9 gal/yr |
| Fuel | Natural Gas, Propane |
|---|
| First-hour rating | 132 gal |
|---|---|
| Rated storage volume | 75 gal |
| Draw pattern | High |
| Gas input rate | 100 kBTU/h |
|---|
| Max current draw | 1 A |
|---|---|
| Vent type | Power Direct Vent |
| Vent size | 3 |
| Smart / connected capable | No |
|---|
| Height | 72 in |
|---|---|
| Diameter | 23 in |
| ENERGY STAR certified | Yes |
|---|
Capacity and running cost
- Its 132 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 $264/year at national average gas rates.
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 HTP Phoenix 80-Gallon (PH100-80) ENERGY STAR certified?
Yes, the HTP Phoenix 80-Gallon (PH100-80) holds a current ENERGY STAR certification for water heating efficiency (UEF 0.93).
How much does the HTP Phoenix 80-Gallon (PH100-80) cost to run per year?
About $264 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 HTP Phoenix 80-Gallon (PH100-80) use?
The HTP Phoenix 80-Gallon (PH100-80) uses Power Direct Vent venting with 3 in vent connections. Matching the existing vent type is usually the cheapest replacement path.
Is the HTP Phoenix 80-Gallon (PH100-80) a smart water heater?
No, the HTP Phoenix 80-Gallon (PH100-80) is not connected-capable — it has no app connectivity or demand-response support.
Sources
- data.energystar.gov (retrieved 2026-07-17)