DoesTheMath

STATE HPACO-45 1**+AXST-66 1**

3.7 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).

If you are checking this listing, the registry data show 1,341 kWh of electricity a year. This is at the high draw pattern, the standard daily hot-water usage DOE tests against. That is 35 kWh above the class median of 1,306 kWh among 194 electric tank models.

Energy use per year

1,341 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 101 of 194, lowest energy first.

This model: 1,341 kWh

Solid line: this model (1,341 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
3.7 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
82 gal DOE CCD · 2026-09-19
Rated Storage Volume the tank size in gallons
60 gal DOE CCD · 2026-09-19
On the market since (ENERGY STAR) the date the manufacturer told ENERGY STAR the model went on sale
2026-02-13 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)
Yes (CTA-2045-A,CTA-2045-B) 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-744 (CO2), GWP 1 ENERGY STAR · 2026-09-19

What it costs to install

$3,505–$4,492 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) · 2026-04-01

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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 numbers1°F min
  • Physical footprintEnter your numbers18" ⌀
  • Electrical supplyEnter your numbers240V, 20.2A max
 ENERGY STAR · 2026-09-19

What these figures mean

For STATE HPACO-45 1**+AXST-66 1**, the figure of 1,341 kWh is not a registry entry. This site computed it from the registry's UEF, the ratio of hot water delivered to energy used, and the DOE test's daily hot-water draw for this draw pattern. The UEF listed for this model is 3.7. The source is the DOE CCD, retrieved 2026-09-19. The figure applies only to the high draw pattern and only to electricity. A real household draws a different volume of hot water, so actual use can differ. The method behind the annual cost is described on its own page.

By energy use, this model ranks 101st lowest of 194 models in its class. It sits in the second-highest quarter of its class for energy use, above the median of 1,306 kWh. The high draw pattern describes 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 82 gallons. The rated volume is 60 gallons. A household that puts low energy use first would find models ranked ahead of this one in the same class. This page does not give a figure for other draw patterns.

Running cost is not stated here because it depends on your utility's electricity tariff. Multiply 1,341 kWh by your own rate per kilowatt-hour to get a yearly figure at this draw pattern. The cost calculator on your own ZIP does this with local rates. This page does not estimate a cost. To compare within the same class, the same-class replacement finder searches by model number. Any comparison should use the same 194 models, because a result from another draw pattern is not comparable with 1,341 kWh. The installed price appears in its own block with its source and date, and is not repeated here.

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 3.7 · Grade C Price it on your ZIP

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