Navien NWP500 40-Gallon vs Richmond Heat Pump 40-Gallon (10E40-HP530)
The Navien NWP500 40-Gallon is the more efficient unit: UEF 3.85 versus 3.83 — about 1% less energy for the same hot water. At national average rates that works out to about $143/year for the Navien NWP500 40-Gallon against $146/year for the Richmond Heat Pump 40-Gallon (10E40-HP530) — a $3 annual difference. The Navien NWP500 40-Gallon delivers more hot water in the peak hour (65 gal first-hour rating vs 60 gal).
| Navien NWP500 40-Gallon | Richmond Heat Pump 40-Gallon (10E40-HP530) | |
|---|---|---|
| Uniform Energy Factor (UEF) | 3.85 | 3.83 |
| Fuel | Electric | Electric |
| First-hour rating | 65 gal | 60 gal |
| Rated storage volume | 44 gal | 36 gal |
| Draw pattern | Medium | Medium |
| Annual electricity use | 840 kWh/yr | 859 kWh/yr |
| Heat pump type | 240 Volt Integrated HPWH | 240 Volt Integrated HPWH |
| Input voltage | 240 | 240 |
| Max current draw | 23 A | 21 A |
| Recovery efficiency | 461 % | 434 % |
| Smart / connected capable | No | No |
| Refrigerant (GWP) | R-134a (GWP:1430) | R-134a (GWP:1430) |
| Compressor low-temp cutoff | 41 °F | 37 °F |
| Height | 63 in | 47.2 in |
| Diameter | 21.8 in | 20 in |
| ENERGY STAR certified | Yes | Yes |
Frequently asked questions
Which costs less to run, the Navien NWP500 40-Gallon or the Richmond Heat Pump 40-Gallon (10E40-HP530)?
The Navien NWP500 40-Gallon: about $143/year versus $146/year for the Richmond Heat Pump 40-Gallon (10E40-HP530) at national average rates — a $3 annual difference.
Are the Navien NWP500 40-Gallon and Richmond Heat Pump 40-Gallon (10E40-HP530) both ENERGY STAR certified?
Yes — every water heater in this database is drawn from the U.S. EPA ENERGY STAR certified water heater datasets.