FRIEDRICH PROE40 M2 RH95 vs Lennox WHES040S45TD240S****: which uses less energy?
At the medium draw pattern the FRIEDRICH PROE40 M2 RH95 and the Lennox WHES040S45TD240S**** use the same energy, 3,493 kWh a year each, on the same federal test. Both are filed as an electric tank, so the comparison holds; what separates them is below. Enter your ZIP to price either one on your own rate.
Side by side
Compared within one class only: models filed as an electric tank at the medium draw pattern.
| Figure | FRIEDRICH PROE40 M2 RH95 | Lennox WHES040S45TD240S**** |
|---|---|---|
| UEF (Uniform Energy Factor) | 0.93 | 0.93 |
| Energy use per year (kWh) | 3,493 | 3,493 |
| First hour rating (gal) | 55 | 54 |
| Rated storage volume (gal) | 36 | 36 |
| Installed cost range | $1,597–$2,019 | $1,597–$2,019 |
| ENERGY STAR certified | not matched | not matched |
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 FRIEDRICH PROE40 M2 RH95 if its price or availability suits you — on energy the two are level.
- Pick the Lennox WHES040S45TD240S**** if it is the one you can get installed sooner or for less — on the filed figures it has no advantage over the FRIEDRICH PROE40 M2 RH95.
- Neither if your household's busiest hour needs more than 55 gallons of hot water — neither lists more. Check whether a 40-gallon heater is enough.
Each model on its own
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FRIEDRICH PROE40 M2 RH95
Its filed figures, class position and running cost on your ZIP.
-
Lennox WHES040S45TD240S****
Its filed figures, class position and running cost on your ZIP.