Navien NWP500 65-Gallon
Navien NWP500 65-Gallon is a heat pump (hybrid electric) water heater from Navien with a 61 gallon rated tank and a 80 gallon first-hour rating at a 4.03 UEF.
| Uniform Energy Factor (UEF) | 4.03 |
|---|---|
| Annual electricity use | 1245 kWh/yr |
| Recovery efficiency | 433 % |
| Fuel | Electric |
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| First-hour rating | 80 gal |
|---|---|
| Rated storage volume | 61 gal |
| Draw pattern | High |
| Heat pump type | 240 Volt Integrated HPWH |
|---|---|
| Refrigerant (GWP) | R-134a (GWP:1430) |
| Compressor low-temp cutoff | 41 °F |
| Input voltage | 240 |
|---|---|
| Max current draw | 23 A |
| Smart / connected capable | No |
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| Height | 63 in |
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| Diameter | 25 in |
| ENERGY STAR certified | Yes |
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Who is the Navien NWP500 65-Gallon for?
- Its 80 gallon first-hour rating suits a household of 5+ people under DOE sizing guidance.
- Estimated running cost: about $212/year at the national average electricity rate (1245 kWh/yr certified use).
- Needs a 240 V circuit; at 23 A max draw plan for a 30 A breaker (NEC 125% continuous-load rule).
- The heat pump compressor operates down to 41 °F ambient — below that, backup elements take over.
Compare the Navien NWP500 65-Gallon
- Navien NWP500 65-Gallon vs A. O. Smith Heat Pump 80-Gallon (HPA10-80H45DV 2)
- Navien NWP500 65-Gallon vs A. O. Smith Heat Pump 80-Gallon (HPS10-80H45DV 2)
- Navien NWP500 65-Gallon vs A. O. Smith Heat Pump 80-Gallon (HPSN10-80H45DV 2)
- Navien NWP500 65-Gallon vs American Heat Pump 65-Gallon (HPA10266H045DV 2)
- Navien NWP500 65-Gallon vs American Heat Pump 80-Gallon (HPA10280H045DV 2)
- Navien NWP500 65-Gallon vs American Heat Pump 80-Gallon (HPS10280H045DV 2)
- Navien NWP500 65-Gallon vs AMERICAN STANDARD WATER HEATERS Heat Pump Water Heater 40-Gallon (ASHPWH-50)
- Navien NWP500 65-Gallon vs AMERICAN STANDARD WATER HEATERS Heat Pump Water Heater 65-Gallon
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Frequently asked questions
Is the Navien NWP500 65-Gallon ENERGY STAR certified?
Yes, the Navien NWP500 65-Gallon holds a current ENERGY STAR certification for water heating efficiency (UEF 4.03).
How much does the Navien NWP500 65-Gallon cost to run per year?
About $212 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 Navien NWP500 65-Gallon need?
The Navien NWP500 65-Gallon runs on a 240 V circuit drawing up to 23 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 Navien NWP500 65-Gallon a smart water heater?
No, the Navien NWP500 65-Gallon is not connected-capable — it has no app connectivity or demand-response support.
Sources
- data.energystar.gov (retrieved 2026-07-17)