Friedrich Heat Pump 40-Gallon (PROH40 T2 FD310UM)
Friedrich Heat Pump 40-Gallon (PROH40 T2 FD310UM) is a heat pump (hybrid electric) water heater from Friedrich with a 36 gallon rated tank and a 60 gallon first-hour rating at a 3.5 UEF.
| Uniform Energy Factor (UEF) | 3.5 |
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| Annual electricity use | 879 kWh/yr |
| Recovery efficiency | 430 % |
| Fuel | Electric |
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| First-hour rating | 60 gal |
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| Rated storage volume | 36 gal |
| Draw pattern | Medium |
| Heat pump type | 240 Volt Integrated HPWH |
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| Refrigerant (GWP) | R-134a (GWP:1430) |
| Compressor low-temp cutoff | 37 °F |
| Input voltage | 240 |
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| Max current draw | 21 A |
| Smart / connected capable | No |
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| Height | 45 in |
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| Diameter | 16 in |
| ENERGY STAR certified | Yes |
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Who is the Friedrich Heat Pump 40-Gallon (PROH40 T2 FD310UM) for?
- Its 60 gallon first-hour rating suits a household of 2–3 people under DOE sizing guidance.
- Estimated running cost: about $149/year at the national average electricity rate (879 kWh/yr certified use).
- Needs a 240 V circuit; at 21 A max draw plan for a 30 A breaker (NEC 125% continuous-load rule).
- The heat pump compressor operates down to 37 °F ambient — below that, backup elements take over.
Similar water heaters
- Friedrich Heat Pump 40-Gallon (PROH40 T2 FD310BM) (UEF 3.5)
- Friedrich Heat Pump 40-Gallon (PROH40 T2 FD350BM) (UEF 3.5)
- Friedrich Heat Pump 40-Gallon (PROH40 T2 FD350UM) (UEF 3.5)
- Friedrich Heat Pump 40-Gallon (PROH40 T2 FD400-30) (UEF 3.83)
- Friedrich Heat Pump 40-Gallon (PROH40 T2 FD400-SO) (UEF 3.83)
- Rheem Heat Pump 40-Gallon (PRO H40 T2 RH310BM) (UEF 3.5)
Frequently asked questions
Is the Friedrich Heat Pump 40-Gallon (PROH40 T2 FD310UM) ENERGY STAR certified?
Yes, the Friedrich Heat Pump 40-Gallon (PROH40 T2 FD310UM) holds a current ENERGY STAR certification for water heating efficiency (UEF 3.5).
How much does the Friedrich Heat Pump 40-Gallon (PROH40 T2 FD310UM) cost to run per year?
About $149 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 Friedrich Heat Pump 40-Gallon (PROH40 T2 FD310UM) need?
The Friedrich Heat Pump 40-Gallon (PROH40 T2 FD310UM) runs on a 240 V circuit drawing up to 21 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 Friedrich Heat Pump 40-Gallon (PROH40 T2 FD310UM) a smart water heater?
No, the Friedrich Heat Pump 40-Gallon (PROH40 T2 FD310UM) is not connected-capable — it has no app connectivity or demand-response support.
Sources
- data.energystar.gov (retrieved 2026-07-17)