A. O. Smith Heat Pump 80-Gallon (FPTU-80 1)
A. O. Smith Heat Pump 80-Gallon (FPTU-80 1) is a heat pump (hybrid electric) water heater from A. O. Smith with a 82 gallon rated tank and a 84 gallon first-hour rating at a 3.45 UEF.
| Uniform Energy Factor (UEF) | 3.45 |
|---|---|
| Annual electricity use | 1396 kWh/yr |
| Recovery efficiency | 233 % |
| Fuel | Electric |
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| First-hour rating | 84 gal |
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| Rated storage volume | 82 gal |
| Draw pattern | High |
| Heat pump type | 240 Volt Integrated HPWH |
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| Refrigerant (GWP) | R-134a (GWP:1430) |
| Compressor low-temp cutoff | 45 °F |
| Input voltage | 240 |
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| Max current draw | 22 A |
| Smart / connected capable | No |
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| Height | 69 in |
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| Diameter | 27 in |
| ENERGY STAR certified | Yes |
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Who is the A. O. Smith Heat Pump 80-Gallon (FPTU-80 1) for?
- Its 84 gallon first-hour rating suits a household of 5+ people under DOE sizing guidance.
- Estimated running cost: about $237/year at the national average electricity rate (1396 kWh/yr certified use).
- Needs a 240 V circuit; at 22 A max draw plan for a 30 A breaker (NEC 125% continuous-load rule).
- The heat pump compressor operates down to 45 °F ambient — below that, backup elements take over.
Similar water heaters
- American Heat Pump 80-Gallon (HPHE6280H045DV 1) (UEF 3.45)
- Friedrich Heat Pump 80-Gallon (PROH80 T0 FD120-M) (UEF 3.46)
- Friedrich Heat Pump 80-Gallon (PROH80 T0 FD120-MSO) (UEF 3.46)
- RELIANCE WATER HEATERS Heat Pump 80-Gallon (6-80-DHPHT 1) (UEF 3.45)
- Rheem Heat Pump 80-Gallon (PROPH80 T0 RH120-M) (UEF 3.46)
- Rheem Heat Pump 80-Gallon (PROPH80 T0 RH120-MSO) (UEF 3.46)
Frequently asked questions
Is the A. O. Smith Heat Pump 80-Gallon (FPTU-80 1) ENERGY STAR certified?
Yes, the A. O. Smith Heat Pump 80-Gallon (FPTU-80 1) holds a current ENERGY STAR certification for water heating efficiency (UEF 3.45).
How much does the A. O. Smith Heat Pump 80-Gallon (FPTU-80 1) cost to run per year?
About $237 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 electrical circuit does the A. O. Smith Heat Pump 80-Gallon (FPTU-80 1) need?
The A. O. Smith Heat Pump 80-Gallon (FPTU-80 1) runs on a 240 V circuit drawing up to 22 A; per the NEC 125% continuous-load rule plan for at least a 30 A breaker (check the installation manual for the required circuit).
Is the A. O. Smith Heat Pump 80-Gallon (FPTU-80 1) a smart water heater?
No, the A. O. Smith Heat Pump 80-Gallon (FPTU-80 1) is not connected-capable — it has no app connectivity or demand-response support.
Sources
- data.energystar.gov (retrieved 2026-07-17)