DoesTheMath

A. O. SMITH GPVNT-40 1** vs JETGLAS RG2PV40S*N19: which uses less energy?

At the high draw pattern the A. O. SMITH GPVNT-40 1** uses 232 therms a year and the JETGLAS RG2PV40S*N19 235 — 3 therms (1%) less, about 32 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 high draw pattern.

Filed and computed figures
Figure A. O. SMITH GPVNT-40 1** JETGLAS RG2PV40S*N19
UEF (Uniform Energy Factor) 0.73 (better) 0.72
Energy use per year (therms) 232 (better) 235
First hour rating (gal) 91 75
Rated storage volume (gal) 38 38
Installed cost range $2,169–$4,116 $2,110–$3,965
ENERGY STAR certified not matched not matched
DOE CCD · 2026-09-19

What it costs to run

A. O. SMITH GPVNT-40 1**: 232 therms a year JETGLAS RG2PV40S*N19: 235 therms a year

A. O. SMITH GPVNT-40 1** — 232 therms a year JETGLAS RG2PV40S*N19 — 235 therms a year

A. O. SMITH GPVNT-40 1** is 3 therms a year lower than JETGLAS RG2PV40S*N19.

DOE CCD · 2026-09-19

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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 GPVNT-40 1** if running cost matters most: it uses 3 therms less a year on the same test.
  • Pick the JETGLAS RG2PV40S*N19 if it is the one you can get installed sooner or for less — on the filed figures it has no advantage over the A. O. SMITH GPVNT-40 1**.
  • Neither if your household's busiest hour needs more than 91 gallons of hot water — neither lists more. Check whether a 40-gallon heater is enough.

Each model on its own