GE Profile PF40S10FPY01 vs Lennox WHES040L45SN240B****: which uses less energy?
An asterisk in a model number stands for any character: one filing covers several variants.
At the low draw pattern the GE Profile PF40S10FPY01 uses 724 kWh a year and the Lennox WHES040L45SN240B**** 2,439 — 1,715 kWh (70%) less, about 17,154 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 low draw pattern.
| Figure | GE Profile PF40S10FPY01 | Lennox WHES040L45SN240B**** |
|---|---|---|
| UEF (Uniform Energy Factor) | 3.1 (better) | 0.92 |
| Energy use per year (kWh) | 724 (better) | 2,439 |
| First hour rating (gal) | 46 | 46 |
| Rated storage volume (gal) | 40 | 36 |
| Installed cost range NLR REMDB | $2,787–$3,703 | $1,591–$1,802 |
| ENERGY STAR certified ENERGY STAR | yes | not matched |
| Sound level (dB) ENERGY STAR | 41 | not filed |
| Refrigerant ENERGY STAR | R1234YF | not filed |
| On the market since ENERGY STAR | 2025-05-27 | not filed |
| CPSC recall naming it CPSC | none on file | none on file |
DOE CCD · 2026-09-19 NLR REMDB · 2026-04-01 ENERGY STAR · 2026-09-19 CPSC · 2026-09-24
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 above.
- No CPSC recall on file names either model (list checked 2026-09-24).
- The actual warranty term is printed in each model’s documentation, not in any registry.
Which should you pick?
- Pick the GE Profile PF40S10FPY01 if running cost matters most: it uses 1,715 kWh less a year on the same test.
- Pick the Lennox WHES040L45SN240B**** if the installed price matters more than the running cost: its modeled installed range is $1,591–$1,802 against $2,787–$3,703.
- Neither if your household's busiest hour needs more than 46 gallons of hot water — neither lists more. Check whether a 40-gallon heater is enough.
Each model on its own
- GE Profile PF40S10FPY01 724 kWh a year
- Lennox WHES040L45SN240B**** 2,439 kWh a year