AMERICAN STANDARD WATER HEATERS Heat Pump Water Heater 65-Gallon vs Navien NWP500 40-Gallon
Both water heaters carry the same efficiency rating: UEF 3.85. At national average rates that works out to about $143/year for the Navien NWP500 40-Gallon against $219/year for the AMERICAN STANDARD WATER HEATERS Heat Pump Water Heater 65-Gallon — a $76 annual difference. The AMERICAN STANDARD WATER HEATERS Heat Pump Water Heater 65-Gallon delivers more hot water in the peak hour (78 gal first-hour rating vs 65 gal). Only the AMERICAN STANDARD WATER HEATERS Heat Pump Water Heater 65-Gallon is connected-capable (app control, utility programs).
| AMERICAN STANDARD WATER HEATERS Heat Pump Water Heater 65-Gallon | Navien NWP500 40-Gallon | |
|---|---|---|
| Uniform Energy Factor (UEF) | 3.85 | 3.85 |
| Fuel | Electric | Electric |
| First-hour rating | 78 gal | 65 gal |
| Rated storage volume | 62 gal | 44 gal |
| Draw pattern | High | Medium |
| Annual electricity use | 1289 kWh/yr | 840 kWh/yr |
| Heat pump type | 240 Volt Integrated HPWH | 240 Volt Integrated HPWH |
| Input voltage | 240 | 240 |
| Max current draw | 21 A | 23 A |
| Recovery efficiency | 435 % | 461 % |
| Smart / connected capable | Yes | No |
| Refrigerant (GWP) | R-134a (GWP:1430) | R-134a (GWP:1430) |
| Compressor low-temp cutoff | 35 °F | 41 °F |
| Height | 50 in | 63 in |
| Diameter | 20.2 in | 21.8 in |
| ENERGY STAR certified | Yes | Yes |
Frequently asked questions
Which costs less to run, the AMERICAN STANDARD WATER HEATERS Heat Pump Water Heater 65-Gallon or the Navien NWP500 40-Gallon?
The Navien NWP500 40-Gallon: about $143/year versus $219/year for the AMERICAN STANDARD WATER HEATERS Heat Pump Water Heater 65-Gallon at national average rates — a $76 annual difference.
Are the AMERICAN STANDARD WATER HEATERS Heat Pump Water Heater 65-Gallon and Navien NWP500 40-Gallon both ENERGY STAR certified?
Yes — every water heater in this database is drawn from the U.S. EPA ENERGY STAR certified water heater datasets.