DoesTheMath

GE GP40T**AYV01 vs Rheem PROG40-40N RH67 PDV: which uses less energy?

At the medium draw pattern the Rheem PROG40-40N RH67 PDV uses 176 therms a year and the GE GP40T**AYV01 179 — 3 therms (2%) less, about 28 therms over ten years. Both are filed as a gas tank, so the comparison holds. Enter your ZIP below to price the difference.

Side by side

Compared within one class only: models filed as a gas tank at the medium draw pattern.

Filed and computed figures
GE GP40T**AYV01 Rheem PROG40-40N RH67 PDV
UEF (Uniform Energy Factor) 0.62 0.63 (better)
Energy use per year (therms) 179 176 (better)
First hour rating (gal) 68 67
Rated storage volume (gal) 40 38
Installed cost range $1,556–$2,536 $1,585–$2,613
ENERGY STAR certified not matched not matched
DOE CCD · 2026-09-19

What it costs to run

GE GP40T**AYV01: 179 therms a year Rheem PROG40-40N RH67 PDV: 176 therms a year

GE GP40T**AYV01 — 179 therms a year Rheem PROG40-40N RH67 PDV — 176 therms a year

Rheem PROG40-40N RH67 PDV is 3 therms a year lower than GE GP40T**AYV01.

DOE CCD · 2026-09-19

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Enter your ZIP to price both units on the same rate where you live.

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 Rheem PROG40-40N RH67 PDV if running cost matters most: it uses 3 therms less a year on the same test.
  • Pick the GE GP40T**AYV01 if you need more hot water in your busiest hour: it lists a first hour rating of 68 gallons against 67.
  • Neither if your household's busiest hour needs more than 68 gallons of hot water — neither lists more. Check whether a 40-gallon heater is enough.

Each model on its own

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