DoesTheMath

LG APHWC801M vs LOCHINVAR HPACO-45 1**+AXST-80 1**: which uses less energy?

At the high draw pattern the LG APHWC801M uses 1,272 kWh a year and the LOCHINVAR HPACO-45 1**+AXST-80 1** 1,306 — 33 kWh (3%) less, about 335 kWh over ten years. Both are filed as an electric tank, so the comparison holds. Enter your ZIP below to price the difference.

Side by side

Compared within one class only: models filed as an electric tank at the high draw pattern.

Filed and computed figures
LG APHWC801M LOCHINVAR HPACO-45 1**+AXST-80 1**
UEF (Uniform Energy Factor) 3.9 (better) 3.8
Energy use per year (kWh) 1,272 (better) 1,306
First hour rating (gal) 94 95
Rated storage volume (gal) 72 73
Installed cost range $3,917–$4,805 $3,938–$4,714
ENERGY STAR certified yes yes
Refrigerant R-134a, GWP 1430 R-744 (CO2), GWP 1
On the market since 2023-11-01 2026-02-13
DOE CCD · 2026-09-19

What it costs to run

LG APHWC801M: 1,272 kWh a year LOCHINVAR HPACO-45 1**+AXST-80 1**: 1,306 kWh a year

LG APHWC801M — 1,272 kWh a year LOCHINVAR HPACO-45 1**+AXST-80 1** — 1,306 kWh a year

LG APHWC801M is 34 kWh a year lower than LOCHINVAR HPACO-45 1**+AXST-80 1**.

DOE CCD · 2026-09-19

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Reliability

Not published: Reliability, failure rates and each model’s actual warranty term.

The registries these figures come from certify energy performance under a federal test; none of them records how long a unit lasts or how often it fails, so this page does not rank the two on reliability.

What is here instead:

  • The filed efficiency, capacity and tank size of both models, side by side below.
  • Both are ENERGY STAR certified, which requires a manufacturer warranty of at least six years; the actual term for each model is not published.
  • Time on the market, as filed with ENERGY STAR: the LG APHWC801M since 2023-11-01, the LOCHINVAR HPACO-45 1**+AXST-80 1** since 2026-02-13. A sale date, not a lifespan.

Which should you pick?

  • Pick the LG APHWC801M if running cost matters most: it uses 33 kWh less a year on the same test.
  • Pick the LOCHINVAR HPACO-45 1**+AXST-80 1** if you need more hot water in your busiest hour: it lists a first hour rating of 95 gallons against 94.
  • Neither if your household's busiest hour needs more than 95 gallons of hot water — neither lists more. Check whether a 75-gallon heater is enough.

Each model on its own

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