AMERICAN STANDARD WATER HEATERS Heat Pump Water Heater 40-Gallon (ASHPWH-50)
AMERICAN STANDARD WATER HEATERS Heat Pump Water Heater 40-Gallon (ASHPWH-50) is a heat pump (hybrid electric) water heater from AMERICAN STANDARD WATER HEATERS with a 45 gallon rated tank and a 68 gallon first-hour rating at a 3.75 UEF — 867 kWh/yr certified use, 45.8 in tall.
MSRP: $1,991.85
Our take
The larger of American Standard's two compact heat pumps holds 45 gallons and certifies at 3.75 UEF — just above the class median — for roughly $147 a year, about $465 less than a standard electric tank delivering the same hot water. The 68-gallon first-hour rating clears the cohort median by a few gallons, matching a 3–4 person household. Dimensions are exactly class-typical: 45.8 inches tall, 18.2 across. Connected-capable, 240 V at 21 A on a 30 A breaker. Ariston certifies the identical unit, so two badges carry this spec.
- Best for: A straightforwardly above-median all-rounder in the compact class.
- Trade-off: Nothing notable — nor any spec that leads the cohort.
| Uniform Energy Factor (UEF) | 3.75 |
|---|---|
| Annual electricity use | 867 kWh/yr |
| Recovery efficiency | 430 % |
| Fuel | Electric |
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| First-hour rating | 68 gal |
|---|---|
| Rated storage volume | 45 gal |
| Draw pattern | Medium |
| Heat pump type | 240 Volt Integrated HPWH |
|---|---|
| Refrigerant (GWP) | R-134a (GWP:1430) |
| Compressor low-temp cutoff | 35 °F |
| Input voltage | 240 |
|---|---|
| Max current draw | 21 A |
| Smart / connected capable | Yes |
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| Height | 45.8 in |
|---|---|
| Diameter | 18.2 in |
| ENERGY STAR certified | Yes |
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Who is the AMERICAN STANDARD WATER HEATERS Heat Pump Water Heater 40-Gallon (ASHPWH-50) for?
- Its 68 gallon first-hour rating suits a household of 3–4 people under DOE sizing guidance.
- Estimated running cost: about $147/year at the national average electricity rate (867 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 35 °F ambient — below that, backup elements take over.
Compare the AMERICAN STANDARD WATER HEATERS Heat Pump Water Heater 40-Gallon (ASHPWH-50)
- AMERICAN STANDARD WATER HEATERS Heat Pump Water Heater 40-Gallon (ASHPWH-50) vs Bosch Water heater 50-Gallon
- AMERICAN STANDARD WATER HEATERS Heat Pump Water Heater 40-Gallon (ASHPWH-50) vs Friedrich Heat Pump 40-Gallon (PROH50 T2 FD400-30)
- AMERICAN STANDARD WATER HEATERS Heat Pump Water Heater 40-Gallon (ASHPWH-50) vs Midea Water Heater 50-Gallon (CAN3-RSJ-15/190RDVN3-L4)
- AMERICAN STANDARD WATER HEATERS Heat Pump Water Heater 40-Gallon (ASHPWH-50) vs Bradford White RE2HP50-1NCTT 40-Gallon
- AMERICAN STANDARD WATER HEATERS Heat Pump Water Heater 40-Gallon (ASHPWH-50) vs Navien NWP500 40-Gallon
- AMERICAN STANDARD WATER HEATERS Heat Pump Water Heater 40-Gallon (ASHPWH-50) vs Rinnai REHP50 50-Gallon
- AMERICAN STANDARD WATER HEATERS Heat Pump Water Heater 40-Gallon (ASHPWH-50) vs Ruud Heat Pump 65-Gallon (PROUH65 T0 RU120-M)
- AMERICAN STANDARD WATER HEATERS Heat Pump Water Heater 40-Gallon (ASHPWH-50) vs Friedrich Heat Pump 65-Gallon (PROH65 T2 FD400-30)
Also sold as
The AMERICAN STANDARD WATER HEATERS Heat Pump Water Heater 40-Gallon (ASHPWH-50) is certified hardware that AMERICAN STANDARD WATER HEATERS and its partner brands publish under 2 names. The same specifications apply to every variant:
Similar water heaters
- A. O. Smith Split System Heat Pump 50-Gallon (HPACO-45 1-+AXST-50LBTTP 1) (UEF 3.55)
- Rheem Heat Pump 65-Gallon (PROPH65 T0 RH120-M) (UEF 3.12)
- SANCO2 40-Gallon (GS5-45HPC-D HP + ECO-43SSAQB) (UEF 3.7)
- Rinnai REHP50 50-Gallon (UEF 3.75)
- Friedrich Heat Pump 65-Gallon (PROH65 T0 FD120-M) (UEF 3.12)
- Friedrich Heat Pump 80-Gallon (PROH80 T2 FD400-15) (UEF 3.7)
Frequently asked questions
Is the AMERICAN STANDARD WATER HEATERS Heat Pump Water Heater 40-Gallon (ASHPWH-50) ENERGY STAR certified?
Yes, the AMERICAN STANDARD WATER HEATERS Heat Pump Water Heater 40-Gallon (ASHPWH-50) holds a current ENERGY STAR certification for water heating efficiency (UEF 3.75).
How much does the AMERICAN STANDARD WATER HEATERS Heat Pump Water Heater 40-Gallon (ASHPWH-50) cost to run per year?
About $147 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 AMERICAN STANDARD WATER HEATERS Heat Pump Water Heater 40-Gallon (ASHPWH-50) need?
The AMERICAN STANDARD WATER HEATERS Heat Pump Water Heater 40-Gallon (ASHPWH-50) 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 AMERICAN STANDARD WATER HEATERS Heat Pump Water Heater 40-Gallon (ASHPWH-50) a smart water heater?
Yes, the AMERICAN STANDARD WATER HEATERS Heat Pump Water Heater 40-Gallon (ASHPWH-50) is connected-capable, with app control and eligibility for most utility demand-response programs.
Sources
- data.energystar.gov (retrieved 2026-08-17)