Reliance GCF-50 1** vs Richmond PROG50-40N RH67 PDV: 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 Reliance GCF-50 1** and the Richmond 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 | Reliance GCF-50 1** | Richmond 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 NLR REMDB | $2,082–$3,883 | $2,068–$3,846 |
| 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 Reliance GCF-50 1** if you need more hot water in your busiest hour: it lists a first hour rating of 84 gallons against 82.
- 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
- Reliance GCF-50 1** 245 therms a year
- Richmond PROG50-40N RH67 PDV 245 therms a year