A. O. SMITH G6-UT3030NVR 5** vs Lennox WHGS030T35NAXS****: which uses less energy?
At the medium draw pattern the A. O. SMITH G6-UT3030NVR 5** and the Lennox WHGS030T35NAXS**** use the same energy, 185 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 medium draw pattern.
| Figure | A. O. SMITH G6-UT3030NVR 5** | Lennox WHGS030T35NAXS**** |
|---|---|---|
| UEF (Uniform Energy Factor) | 0.6 | 0.6 |
| Energy use per year (therms) | 185 | 185 |
| First hour rating (gal) | 67 | 72 |
| Rated storage volume (gal) | 29 | 29 |
| Installed cost range | not published | not published |
| 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 A. O. SMITH G6-UT3030NVR 5** if its price or availability suits you — on energy the two are level.
- Pick the Lennox WHGS030T35NAXS**** if you need more hot water in your busiest hour: it lists a first hour rating of 72 gallons against 67.
- Neither if your household's busiest hour needs more than 72 gallons of hot water — neither lists more. Check whether a 30-gallon heater is enough.
Each model on its own
-
A. O. SMITH G6-UT3030NVR 5**
Its filed figures, class position and running cost on your ZIP.
-
Lennox WHGS030T35NAXS****
Its filed figures, class position and running cost on your ZIP.