DoesTheMath

RELIANCE WATER HEATERS HPTU-80N 1**

3.45 UEF DOE CCD · 2026-09-19
C

Grade C: 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).

For RELIANCE WATER HEATERS HPTU-80N 1**, an electric tank, the federal test gives 1,438 kWh a year. That figure is for the high draw pattern, the standard daily hot-water usage DOE tests against. It is 132 kWh above the class median of 1,306 kWh among 194 models.

Energy use per year

1,438 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 above the median of 1,306 kWh for the 194 models registered in the same heater type and draw pattern; it ranks 135 of 194, lowest energy first.

This model: 1,438 kWh

Solid line: this model (1,438 kWh). Dashed line: the class median.

Min 1,002 kWh Median 1,306 kWh Max 5,334 kWh

DOE CCD · 2026-09-19

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What it costs to run where you live

Enter your ZIP to see what this unit costs to run a year on your own utility’s electricity rate.

What the registry files

UEF (Uniform Energy Factor) how much hot water you get for each unit of energy the heater uses
3.45 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
86 gal DOE CCD · 2026-09-19
Rated Storage Volume the tank size in gallons
82 gal DOE CCD · 2026-09-19
On the market since (ENERGY STAR) the date the manufacturer told ENERGY STAR the model went on sale
2019-04-05 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

Not published: Installed cost range

This model's rated tank size lies outside the range NLR REMDB's cost model was fitted on, and the range is not stretched past it.

The annual energy figure on this page does not depend on this range and is unaffected.

Safety 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 · 2026-09-24

Every water heater recall on file since 2015

Does 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
  • Ambient temperatureEnter your numbers45°F min
  • Physical footprintEnter your numbers27" ⌀
  • Electrical supplyEnter your numbers240V, 22A max
 ENERGY STAR · 2026-09-19

What these figures mean

The registry lists a UEF, the ratio of hot water delivered to energy used, of 3.45 for this model. The registry does not publish an annual energy figure. This site computed 1,438 kWh from that UEF and the DOE test's daily hot-water draw for the high draw pattern. The method is explained under how the annual cost is calculated. The figure applies only at that test draw, so a household that uses more or less hot water will see a different total. Among the 194 electric tank models at this draw pattern, this one ranks 135th lowest in energy use. That places it in the second-highest quarter of its class for energy use. The source is DOE CCD, retrieved 2026-09-19.

The first hour rating, the gallons of hot water available in the first hour from a full tank, is 86 gallons. The rated volume is 82 gallons. The high draw pattern describes a larger household, or one where showers and laundry overlap, so these ratings sit with that kind of use. The energy figure is 132 kWh above the class median of 1,306 kWh. This makes the model a poorer fit for a reader whose aim is the lowest energy use in its class. Models ranked lower than 135th use less at the same draw pattern, and you can find a same-class replacement by model number to compare them. The figure does not describe a small household with light use, because it assumes the test draw.

Running cost is not stated here because it depends on your own utility electricity tariff. Multiply the 1,438 kWh figure by your rate per kWh, or use the cost calculator on your own ZIP. The result holds only at the test draw for the high draw pattern. An installed price range is not published for this model. Its ratings lie outside the range that the cost database's model was fitted on, and the range is not stretched past it. Your actual hot-water use is not in the registry data, so real annual energy use in your home is unknown.

DOE CCD · 2026-09-19

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

UEF 3.45 · Grade C Price it on your ZIP

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