Bosch TR7000T - 80US vs RELIANCE WATER HEATERS HPACO-45 1+AXST-80 1: which uses less energy?

At the high draw pattern the Bosch TR7000T - 80US uses 1,240 kWh a year and the RELIANCE WATER HEATERS HPACO-45 1**+AXST-80 1** 1,306 — 65 kWh (5%) less, about 653 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
Figure	Bosch TR7000T - 80US	RELIANCE WATER HEATERS HPACO-45 1+AXST-80 1
UEF (Uniform Energy Factor)	4 (better)	3.8
Energy use per year (kWh)	1,240 (better)	1,306
First hour rating (gal)	91	95
Rated storage volume (gal)	74	73
Installed cost range	$3,993–$4,924	$3,938–$4,714
ENERGY STAR certified	yes	yes
Sound level (dB)	49	not filed
Refrigerant	R-134a, GWP 1430	R-744 (CO2), GWP 1
On the market since	2024-05-30	2026-02-13

DOE CCD · 2026-09-19

What it costs to run

Bosch TR7000T - 80US — 1,240 kWh a year RELIANCE WATER HEATERS HPACO-45 1**+AXST-80 1** — 1,306 kWh a year

Bosch TR7000T - 80US is 66 kWh a year lower than RELIANCE WATER HEATERS 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 Bosch TR7000T - 80US since 2024-05-30, the RELIANCE WATER HEATERS HPACO-45 1**+AXST-80 1** since 2026-02-13. A sale date, not a lifespan.

Which should you pick?

Pick the Bosch TR7000T - 80US if running cost matters most: it uses 65 kWh less a year on the same test.
Pick the RELIANCE WATER HEATERS 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 91.
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

Bosch TR7000T - 80US

Its filed figures, class position and running cost on your ZIP.
RELIANCE WATER HEATERS HPACO-45 1**+AXST-80 1**

Its filed figures, class position and running cost on your ZIP.