NAVIEN NWP500S080AUMB
4.05 UEF DOE CCD · 2026-09-19Grade B: where this UEF sits among the 194 models in its class, lowest (G) to highest (A). A position, not an official label. How the grade is set
An electric tank, high draw pattern (a larger household, or one where showers and laundry overlap).
If you are verifying a listing, the NAVIEN NWP500S080AUMB uses 1,225 kWh of electricity a year at the high draw pattern, the standard daily hot-water usage DOE tests against. That is 81 kWh below the class median of 1,306 kWh among 194 electric tanks.
Energy use per year
1,225 kWh a year
Computed by this site from the registry's UEF and the federal test's daily hot-water draw for this draw pattern. What it costs depends on the electricity rate where you live.
That is below the median of 1,306 kWh for the 194 models registered in the same heater type and draw pattern; it ranks 22 of 194, lowest energy first.
Solid line: this model (1,225 kWh). Dashed line: the class median.
Min 1,002 kWh Median 1,306 kWh Max 5,334 kWh
What it costs to run where you live
What the registry files
- UEF (Uniform Energy Factor) how much hot water you get for each unit of energy the heater uses
- 4.05 DOE CCD · 2026-09-19 Compared only with other models registered as an electric tank at the high draw pattern.
- Draw Pattern the standard daily usage profile DOE tests the unit against
- High DOE CCD · 2026-09-19
- First Hour Rating how many gallons of hot water the unit can deliver in one hour, starting from a full tank
- 85 gal DOE CCD · 2026-09-19
- Rated Storage Volume the tank size in gallons
- 74 gal DOE CCD · 2026-09-19
- On the market since (ENERGY STAR) the date the manufacturer told ENERGY STAR the model went on sale
- 2025-04-30 ENERGY STAR · 2026-09-19
- Connected / demand response (ENERGY STAR) whether the unit can take signals from your utility to shift when it heats, and by which standard (such as CTA-2045)
- No ENERGY STAR · 2026-09-19
- Refrigerant and GWP (ENERGY STAR) the refrigerant a heat pump unit uses and its global warming potential, a leak's climate effect relative to carbon dioxide (CO2 = 1)
- R-134a, GWP 1430 ENERGY STAR · 2026-09-19
What it costs to install
$3,999–$4,974 installed
Not a quote — a modeled range of what installers have charged for this class of unit; your price will vary with labor rates, access, and local code requirements.
Escalation indexes: equipment (BLS PPI) latest available: August 2026; labor (BLS ECI) latest available: April 2026 to June 2026.
NLR REMDB (BLS PPI/ECI escalated) · 2026-04-01Safety record
No CPSC recall names this model.
Checked against the CPSC recall database. CPSC does not publish a model-level match for this product category, so this list is curated by hand from the manufacturer's recall filings.
CPSC · 2026-09-24Does it fit your space?
Enter your own numbers below — this compares them to what ENERGY STAR publishes for this model, it does not tell you what to buy.
- Compressor operating range (ENERGY STAR)
- the air temperatures around the unit in which its heat pump runs; outside this range the heat pump stops
- Dimensions (ENERGY STAR)
- the unit's filed height, width, depth or tank diameter, in inches
- Input voltage and maximum current (ENERGY STAR)
- the circuit voltage the unit is certified on and the most current it draws
What these figures mean
How this compares
The closest models in the same class — same fuel, type and draw pattern.
Keep going
How every figure on this page is calculated
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Find what replaces your water heater
Enter the model number off your old unit and see what is on file today, with the yearly cost difference.
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Find a water heater that fits
Three questions — fuel, hot water need, install space — narrow every model on file to the ones that fit.
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What a water heater costs to run
Prices a unit's efficiency against your own utility's filed tariff for your ZIP code.
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What size heat pump water heater do I need?
Answered from what models in this size actually file.
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Water heaters
Every model on file with the Department of Energy, by heater type.
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All heat pump water heaters
Electric tanks that file a UEF of 2.0 or more — the registry has no separate heat pump type, so this site draws the line there.
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Every NAVIEN model on file
What this brand files, by heater type.
UEF 4.05 · Grade B Price it on your ZIP
The figure of 1,225 kWh is computed by this site, not published by the registry. It combines the registry's UEF, the ratio of hot water delivered to energy used, of 4.05 with the daily hot-water draw that the DOE test assigns to the high draw pattern. The source is DOE CCD, retrieved 2026-09-19. The figure describes the test's standard daily draw for an electric tank and is not a measurement of any particular home. The comparison group is the 194 models registered as an electric tank at this draw pattern. Their median is 1,306 kWh, so this model sits 81 kWh below it. Its rank is 22nd lowest energy use of 194, which places it in the lowest quarter of its class for energy use.
The high draw pattern applies to a larger household, or one where showers and laundry overlap. The first hour rating, the gallons of hot water available in the first hour from a full tank, is 85 gallons for this model. The rated volume is 74 gallons. Those two values are the ones to compare with your own peak-hour demand. The energy figure suits a reader who needs to confirm that a listing matches this draw pattern. It does not describe a smaller household with lighter use, because 1,225 kWh is tied to the high draw. The data on this page does not include a figure for any other draw pattern, so that value is not available. To compare by fuel, space and size, use the water heater selector.
The running cost is not stated in this text because it depends on your own utility electricity tariff. The cost calculator applies the rate for your ZIP to the 1,225 kWh at the high draw pattern. The steps are described in how the annual cost is calculated. The 81 kWh gap to the class median of 1,306 kWh turns into a cost difference only at your own rate, and no cost is estimated here. The installed price range appears in its own block with its source and date, as a modeled installed-cost range and not a quote. To find a same-class replacement for NWP500S080AUMB, use replacement search by model number.
DOE CCD · 2026-09-19