Hot Water List

State C2VA-120E 1**

State C2VA-120E 1** is in the DOE listing as of Oct 19, 2026.

  • Electric tankless water heater
  • 1 listed model

ENERGY STAR certification does not cover this type of water heater.

Its figures are also listed under A. O. Smith C2VA-120E 1**.

Certified and advertised figures

Flow at a 67°F rise
1.2gallons per minuteCertified
Advertised flow
1.2gallons per minuteState, at a 67°F rise
UEF
0.84Uniform energy factor

Flow where you live

The heater gives less flow when colder incoming water needs a bigger rise.

Cold water
Cold water must be at least 10°F colder than the hot water setting.
Flow estimate
The estimate uses the lowest certified flow among the listed models. It is about 1.1 gal/min at a 70°F rise.

Flow limits

  • The estimate excludes the flow needed to turn the heater on, heat lost in pipes, and installation.
  • Cold water from a well or long pipe run can differ from the temperature you enter.
  • Without a stated flow limit, estimates for warmer water may exceed the heater’s actual flow.

Advertised and certified figures

State C2VA-120E 1**: advertised and certified
State C2VA-120E 1**: advertised and certified UEF: advertised 0.84, certified 0.84. Flow: advertised 1.2 gal/min, certified 1.2 gal/min (advertised at a 67°F rise, certified at a 67°F rise). UEF Advertised 0.84 Certified 0.84 Flow · advertised at a 67°F rise, certified at a 67°F rise Advertised 1.2 gal/min Certified 1.2 gal/min
State C2VA-120E 1**: advertised figures, where and when read
FigureAdvertisedCertifiedAdvertiserRead
UEF 0.84 0.84 State Read Oct 4, 2026
Flow 1.2 gal/min at a 67°F rise 1.2 gal/min at a 67°F rise State Read Oct 4, 2026

See how advertised flow compares across tankless models

Certified figures by listed model

State C2VA-120E 1**: certified figures by listed model
Model numberUEFFlow at a 67°F rise (gal/min)Recovery efficiencyDraw pattern
C2VS-120E 1**0.841.286%—

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

It warms 1.2 gallons per minute of water from 58°F to 125°F in the test. The electric tankless type has a median flow of 0.7 gallons per minute. Its flow at a 67°F rise trails 64 of the 337 electric tankless models.

In tests, 84% of the energy it uses ends up as hot water (UEF 0.84). When it runs, 86% of the energy it uses reaches the water (its recovery efficiency).

All of its test figures are shared by one other basic model. The brand name on that one is A. O. Smith. You can find the whole group on the page for the A. O. Smith C2VA-120E 1**.

Also listed as

They carry every figure in the table above.

Updated Oct 19, 2026 · Methodology

Not covered

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