Lochinvar GPVT-50 2** vs Reliance GPVNT-50 1**: which uses less energy?
An asterisk in a model number stands for any character: one filing covers several variants.
At the high draw pattern the Lochinvar GPVT-50 2** and the Reliance GPVNT-50 1** use the same energy, 235 therms a year each, on the same federal test. Both are filed as a gas 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 a gas tank at the high draw pattern.
| Figure | Lochinvar GPVT-50 2** | Reliance GPVNT-50 1** |
|---|---|---|
| UEF (Uniform Energy Factor) | 0.72 | 0.72 |
| Energy use per year (therms) | 235 | 235 |
| First hour rating (gal) | 97 | 85 |
| Rated storage volume (gal) | 48 | 48 |
| Installed cost range NLR REMDB | $2,258–$4,333 | $2,258–$4,333 |
| CPSC recall naming it CPSC | none on file | none on file |
DOE CCD · 2026-09-19 NLR REMDB · 2026-04-01 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 Lochinvar GPVT-50 2** if you need more hot water in your busiest hour: it lists a first hour rating of 97 gallons against 85.
- Neither if your household's busiest hour needs more than 97 gallons of hot water — neither lists more. Check whether a 50-gallon heater is enough.
Each model on its own
- Lochinvar GPVT-50 2** 235 therms a year
- Reliance GPVNT-50 1** 235 therms a year