Chiltrix Inc. DHW105 vs Vaughn Thermal MP120F-RC: which uses less energy?
At the high draw pattern the Chiltrix Inc. DHW105 uses 1,002 kWh a year and the Vaughn Thermal MP120F-RC 1,323 — 321 kWh (24%) less, about 3,207 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.
| Figure | Chiltrix Inc. DHW105 | Vaughn Thermal MP120F-RC |
|---|---|---|
| UEF (Uniform Energy Factor) | 4.95 (better) | 3.75 |
| Energy use per year (kWh) | 1,002 (better) | 1,323 |
| First hour rating (gal) | 133 | 121 |
| Rated storage volume (gal) | 99 | 119 |
| Installed cost range | not published | not published |
| ENERGY STAR certified ENERGY STAR | not matched | yes |
| Sound level (dB) ENERGY STAR | not filed | 37 |
| Refrigerant ENERGY STAR | not filed | R-744 (CO2), GWP 1 |
| On the market since ENERGY STAR | not filed | 2026-06-01 |
| CPSC recall naming it CPSC | none on file | none on file |
DOE CCD · 2026-09-19 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 Chiltrix Inc. DHW105 if running cost matters most: it uses 321 kWh less a year on the same test.
- Pick the Vaughn Thermal MP120F-RC if it is the one you can get installed sooner or for less — on the filed figures it has no advantage over the Chiltrix Inc. DHW105.
- Neither if your household's busiest hour needs more than 133 gallons of hot water — neither lists more.
Each model on its own
- Chiltrix Inc. DHW105 1,002 kWh a year
- Vaughn Thermal MP120F-RC 1,323 kWh a year