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GSW WATER HEATERS GPVL-50 2**

GSW WATER HEATERS GPVL-50 2** is in the DOE listing as of Oct 26, 2026.

  • Gas storage water heater
  • 3 listed models

Not listed as ENERGY STAR certified on Oct 26, 2026.

Its figures are also listed under A. O. Smith GPVL-50 2**.

Storage volume
49gallons
UEF
0.72Uniform energy factor
First-hour rating
79gallonsHot water in the first hour
See it among every gas storage model

Advertised and certified figures

GSW WATER HEATERS GPVL-50 2**: advertised and certified
GSW WATER HEATERS GPVL-50 2**: advertised and certified Size: advertised 50 gal, certified 49 gal (advertised nominal size, certified storage volume). UEF: advertised 0.72, certified 0.72. First-hour rating: advertised 90 gal, certified 79 gal. Size · advertised nominal size, certified storage volume Advertised 50 gal Certified 49 gal UEF Advertised 0.72 Certified 0.72 First-hour rating Advertised 90 gal Certified 79 gal
FigureAdvertisedCertifiedAdvertiserRead
Size 50 gal, nominal size 49 gal storage volume GSW WATER HEATERS Read Oct 5, 2026
UEF 0.72 0.72 GSW WATER HEATERS Read Oct 5, 2026
First-hour rating 90 gal 79 gal GSW WATER HEATERS Read Oct 5, 2026

Certified figures by listed model

Model numberStorage volume (gal)UEFFirst-hour rating (gal)Recovery efficiencyDraw pattern
G650S40N-PV-ES2 2**490.727980%High
G650S40P-PV-ES2 2*1490.727980%High
G850S40N-PV-ES2 2**490.727980%High

UEF is the uniform energy factor. A dash means the model has no such figure.

It holds 49 gallons in the test, 1 gallon less than its 50-gallon sold size. Over one hour from a full tank, it gave 79 gallons in the test (its first-hour rating). Reheating lets it give 30 gallons beyond the 49 gallons in its tank. Of 763 gas storage models, 344 give more hot water in the first hour. The median gas storage model gives 78 gallons in its first hour.

As of Oct 26, 2026, it was not listed as ENERGY STAR certified. In the test, 28% of its energy does not reach the hot water (UEF 0.72). Its test ran at the high level of daily hot water use. Its UEF is lower than that of 71 of the 434 gas storage models with its draw pattern. A UEF of 0.66 is the median for its type and draw pattern. The water took in 80% of the energy used to reheat it (its recovery efficiency).

It is the basic model for G650S40N-PV-ES2 2**, G650S40P-PV-ES2 2*1, and G850S40N-PV-ES2 2**. There are 6 more basic models with the same test figures. Each of them is listed under a different brand. You can find the whole group on the page for the A. O. Smith GPVL-50 2**.

In 2 states, 2 rebate programs may accept it.

Also listed as

They carry every figure in the table above.

Rebates

ProgramStateStatusProgram page
Xcel Energy MINNESOTA RESIDENTIAL ENERGY EFFICIENCY PROGRAMS (gas storage, gas tankless) MN May qualify Its own page
Avista Home and small commercial: HVAC and water heating incentives (gas storage) WA May qualify Its own page

Programs change their terms. Check the program's own page before you buy.

Updated Oct 26, 2026 · Methodology

Not covered

  • Changes to an advertised figure after the date beside it.