GE GE40L08BAM01 vs Ruud PRO H40 T2 RH310BM: which uses less energy?
At the medium draw pattern the Ruud PRO H40 T2 RH310BM uses 928 kWh a year and the GE GE40L08BAM01 3,531 — 2,603 kWh (74%) less, about 26,026 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 medium draw pattern.
| Figure | GE GE40L08BAM01 | Ruud PRO H40 T2 RH310BM |
|---|---|---|
| UEF (Uniform Energy Factor) | 0.92 | 3.5 (better) |
| Energy use per year (kWh) | 3,531 | 928 (better) |
| First hour rating (gal) | 61 | 60 |
| Rated storage volume (gal) | 36 | 36 |
| Installed cost range | $1,591–$1,802 | not published |
| ENERGY STAR certified | not matched | yes |
| Refrigerant | not filed | R-134a, GWP 1430 |
| On the market since | not filed | 2020-04-30 |
What it costs to run
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.
- The actual warranty term is printed in each model’s documentation, not in any registry.
Which should you pick?
- Pick the Ruud PRO H40 T2 RH310BM if running cost matters most: it uses 2,603 kWh less a year on the same test.
- Pick the GE GE40L08BAM01 if you need more hot water in your busiest hour: it lists a first hour rating of 61 gallons against 60.
- Neither if your household's busiest hour needs more than 61 gallons of hot water — neither lists more. Check whether a 40-gallon heater is enough.
Each model on its own
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GE GE40L08BAM01
Its filed figures, class position and running cost on your ZIP.
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Ruud PRO H40 T2 RH310BM
Its filed figures, class position and running cost on your ZIP.