JOHN WOOD GCF-50 1** vs Ruud PROG50-40N RH67 PDV: which uses less energy?
At the high draw pattern the JOHN WOOD GCF-50 1** and the Ruud PROG50-40N RH67 PDV use the same energy, 245 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 | JOHN WOOD GCF-50 1** | Ruud PROG50-40N RH67 PDV |
|---|---|---|
| UEF (Uniform Energy Factor) | 0.69 | 0.69 |
| Energy use per year (therms) | 245 | 245 |
| First hour rating (gal) | 84 | 82 |
| Rated storage volume (gal) | 48 | 47 |
| Installed cost range | $2,082–$3,883 | $2,068–$3,846 |
| 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 JOHN WOOD GCF-50 1** if its price or availability suits you — on energy the two are level.
- Pick the Ruud PROG50-40N RH67 PDV if it is the one you can get installed sooner or for less — on the filed figures it has no advantage over the JOHN WOOD GCF-50 1**.
- Neither if your household's busiest hour needs more than 84 gallons of hot water — neither lists more. Check whether a 50-gallon heater is enough.
Each model on its own
-
JOHN WOOD GCF-50 1**
Its filed figures, class position and running cost on your ZIP.
-
Ruud PROG50-40N RH67 PDV
Its filed figures, class position and running cost on your ZIP.